Keepin the dream alive

Well it's another phase for the experiment. I've opened up a website at http://homecsp.com. I'm focusing on basic PV style solar tracking since that's the best first market, but I'm getting excited about the future for home CSP applications. The first run with my ad campaign didn't get enough orders to make a profit, but it did show some interest. Soon I'll have the inventory of product and the shift to sales mode will be on. With summer coming, it's a whole new game.

Hydronics

Well I stopped by my old friend Ed's today and learned a new word. Ed has been working with hydronics for the last 30 years. He says hydro is latin for water, and ics is latin for sh!t. Did I say he's my friend? :) He's going to show me all the things I did wrong when I built my flash heater so that I don't end up getting hurt from something bursting. Hopefully he's got some appropriate components at his shop that I can have.
Some of the things I neglected:
- a way of throttling the heat, i.e. fire to prevent steam flash
- a strainer
- the fact that pressure increases when pipe volume decreases
- known flow rate
- establishing min and max parameters and operating in the middle.

Sometimes optimism is good, sometimes it can get you hurt. Building a boiler falls in the later category; nevertheless it seems that I have to familiarize myself with this to kick start some useful residential scale heliostat target prototypes.

Hot Water, Almost

Two days ago I finished the plumbing a flash water heater that I built. It's been really cold, and rained all day yesterday. I thought two days would be good to make sure the glue cured thoroughly. This morning I rigged up the electrical part and gave it a test. The pump ran fine and there didn't seem to be any leaks, so I got some wood and lit a fire. Right away I could tell it worked quite well. The infra-red thermometer registered about a 16 degree differential on input and output, but I'm not sure what the effective flow rate was. One problem I soon noticed was that the pump input, which is connected to the water tank cold inlet, was drawing the warm water off the top of the tank. I kind of assumed that they had a pipe extending down into the tank so that the incoming cold water wouldn't mix with the hot. Apparently that was a bad assumption. I originally planned on the pump intake being connected to the drain on the bottom of the tank, but after flushing several pounds of scale out, including gravel sized pieces, I became concerned that the scale would end up either damaging the pump or plugging up the 1/4" tubing in the flash heater section.
Everything seemed to be going fine and I was just sitting on the porch enjoying the momentary feeling of accomplishment when all of a sudden one of the pipes burst. I quickly shut the water off, and assessed the situation. With the flow shut off, temperatures rose in the flash heater and the next thing I knew, the flexible hose connected to the copper blew off: so much for faucet lines. Steam and smoke was all bluring together and the feeling of accomplishment quickly changed to disappointment. Now I'm going to have to use a galvanized or copper line, which means spending more money. At least a certain proof of concept with the flash heater was accomplished. The next step may well be moving to the other side of the house and going ahead with connections to the house tank. That way at least I'll be able to easily use the water once it's heated. The down side is that I'm still a long way from being able to take a hot shower.

Hard Reality

Yesterday I painted at two jobs before playing music for 6 hours. I grosed about $50 for my skill and labor, and probably spent $5 in gas while I helped beautify houses that are already in the top tier of real estate in the USA, and even more so world wide. Some of the houses on the way to Point Venture feature the worst displays of ostentatiousness that I've seen. Along the road are signs advertising "million dollar views."
Relief (or torment) comes in the form of Rock'n Roll. As soon as I turned on the Marshall, I fired off into a frantic version of REO Speedwagon's Riding the Storm Out, to which I was soon joined in by the drummer and bass player while everyone else stood in amazement. It's hard not to get excited when you can slash at the guitar with abandon and yet have it sound like music, very loud music. The Marshall's 8x10 cabinet screams like a 747 taking off while I stand in front absorbing the energy along with the guitar as the feedback creates a nuclear reaction of energy which explodes into a furious lead. It's like being able to grab a 10,000 volt wire and yet you don't get hurt. After hours of musical ecstasy, suddenly the last song has ended, and all the equipment is quickly packed up. I drive back to the place I will park the van and spend the night after heating some tortillas on the camp stove for dinner.
This morning was very cold. I noticed during the night that I had condensation on my moustache. The sky was perfectly clear for the first time in at a week if not two, and it quickly warmed things up into the 60's. I got to take a leisurely morning and then went back out to PV to work some more. I have to be thankful for some work, but it sucks to be working in the same neighborhood doing the same thing I did when I was 16 and 17 years old, and hardly making any more money, while everything else costs more and the houses have turned into bling bling. I could do anything, and I've done so many things, and here I am back where I started doing the same old thing, playing the same old songs. This too will pass.

Inverter Power and the Boogie Man

It was too cold today to work for money so I worked around the house. I cleaned up the carport considerably, and got a better vision of how to set up the water heater and peripherals, including a firepit for testing a heat converter that I built out of 20' of 1/4" copper tubing.
I found a small piece of extension cord in the yard with the male end still attached. I fitted a second male plug to the other end and then used the resulting cord to plug a 12v inverter into the outdoor outlet on the porch. I turned the inverter on and nothing blew up (yeah!) and then opened the front door and turned the lights on (presto). Curiously nothing seemed to work outside of the living room circuit, so I'll look into that another time -- probably on another phase of the bus.
While gathering firewood from the nearby woods, I met a neighbor who was also gathering wood. He was quite curious, without coming straight out about it, as to what I was doing at the house. Two nights ago someone drove past, turned around, sat up the hill looking at the house for about 5 minutes then drove into the driveway. As soon as I turned on the headlights on my van, they quickly left. Security has been on a little higher alert since then (what does that mean?), so it's nice to have some working lights and wood for the fireplace. I also happened to use some scaffolding to reach the exaust vent upstairs to plug it so that the warm air will have a chance of staying in the house if I actually light up the fireplace and spend some time inside the house instead of the van.

Direct Current

Well the other week I got a 45w solar panel kit from HF, and today I finally got a fresh deep cycle battery to go with it. I also got a 12v DC power supply for the laptop I'm writing this on, it's cool because now I don't have to use an AC inverter -- more efficient. Solar to 12v battery, then battery to DC powerboost at 19v for the laptop. Supposedly 85% efficient step up conversion.
What all this means is that I am at the first stage of successfully living off the grid! From now on its just a matter of increasing capacity, and convenience. Even as I was purchasing the new battery, the solar panels were powering an AC inverter to provide juice to an 18v battery pack for a drill. Most importantly I'll now have enough power to run the laptop during the day and work on the heliostat controller routines some more. Yeah, testing can resume!
Also now in the picture will be using the inverter to power the Taco circulation pump that I've got, which is key to getting some solar hot water happening -- and developing the first heliostat target product.
It may be crazy dangerous, so I'll think about it a few more days, but I'm thinking about plugging in 12v to the house wiring and running some 12v lights and stuff off of the outlets scattered about the house. I realize that the breakers sharing the same phase of the buss will be the only ones sharing power. As long as no AC devices are hooked up it may be safe - provided I'm sure to run through at least one breaker.

Testing 1,2,3

Well the first test was getting the prototype working. This week I realized that I had be running the prototype set to Daylight Savings time, which caused the solar calculations to be off. With that little tidbit out of the way, tracking is now in the +/- 1foot accuracy range which is ideal.

The second test has been finding a place to live and work on the project. Two weeks ago I was abruptly kicked off the ranch after only my second day of outdoor testing. The last two weeks have been pure van living at it's finest, hanging out in the suburbs of Austin and bathing in a local creek. Fortunately I found an old friend with a shop where I've now done a couple days of testing and seem to have most of the kinks worked out.

The third test is going to be turning this great idea into a business. I need a pilot site, and at least one business partner to help some capital to make things take off. I'm drafting up an ad that I'll try floating on Craigslist to see if I can find any partners that way. Plan B in the wings is to find a place (park, flea market?) I can set up and see if I attract anyone interested in being a pilot site or investor.

Once Again

What is it with these carnivores? All the sudden, one day, for no apparent reason, they decide that they hate you and they say "Get the f**k out. Now!" Honestly, this never happened to me before this year, but now it's happened twice. If I didn't already meditate a lot, I'd have to meditate about that just to figure out what the heck is going on. The Vedas say that eating meat destroys compassion. Stepping stones aren't meant to be foundations, you just stand there till you take the next step. It looks like the ranch was just an incubator for the prototype since as soon as it passed level zero tests, it was time to move on.
12 to 16 hours later everything is packed in the van and it's off I go again: on the road, destination unknown. It was quite a bit of work packing up the electronics this time, but practice makes perfect. The environment is always beneficial, so what's next Srila Gurudeva?

Closed Doors

I'm sitting here watching the show "Who Killed the Electric Car", and besides making me want to rant against companies like GM, it's making me realize that I'm going to have an incredibly hard time bringing heliostats to the masses. Since I'm not independently wealthy, I'm going to have to find big investors, who will naturally gain control any company that would be based on this, and they are most likely going to take it and sit on it so that no one can use it. This is probably the same reason that you can't find any sterling engines on the market.
Did you know that Toyota currently is using more than 50% of the precious metals production available worldwide in its hybrid vehicles? Anyone touting hydrogen fuel cells as a solution for alternative energy is ignoring the fact that there just isn't enough platinum to give everyone fuel cells. The government continues to pour billions of dollars into research programs controlled by the existing petro-chemical oligarchy that has no intentions of changing the status quo anytime soon. Have I mentioned before that these same companies established patents for heliostats back in the 70's and 80's and then DID NOTHING with the technology. Fortunately most of these patents have since expired, but unfortunately it's hard to build a business plan around a product that can't be protected by patents. Hopefully some of my concepts are unique enough to be patentable, but without funding for patent lawers, I won't know. Ask Leo Gerst who spent tens of thousands of dollars only to see his own heliostat patents die a slow death.
Last week I found a place called the Clean Energy Incubator in Austin Texas, which is affiliated with the University of Texas, and part of the I2C consortium. At first I got really excited. They've got a venture summit next week where 5 inventions will get selected to receive funding to move them to market. The expressly stated purpose of this organization is to help nurture new ideas in clean energy and bring them to market. I sent an email with basic information and have yet to receive a reply. I called and got no answer. I drove there and couldn't in the door without an appointment. I can't even get through to the receptionist. Nice job guys.

Been a long time

It lost the thrill long ago. All the troubles with blown up motor drivers and mysterious bugs have been worked out. The mysteries of error analysis and rotational translations have been solved, and over 6,000 lines of finished C code have come together into a heliostat.

Been a long time since I rock and rolled
Been a long time since I took that stroll

Days, weeks, and months have gone by while I've toiled away 7 days a week in total isolation except for an occasional trip to the grocery store. Staying up till 3 or 4 am, getting up at 9:00. Soldering and routing hundreds of little connections, trying not to hook up anything backwards, and occasionally succeeding.

Been a long time since I spoke of love
Can't take the tears of a life with no love

And the final challenge is the biggest: to get rid of the anger and sadness that comes from having my faith in people reduced to ashes. I don't like other people, and I don't like myself. It seems that humans, though arguable the most advanced of the millions of life forms on the planet, are the lowest form of life with the ability to worship God. In fact most people aren't even at this level, and most of those that think they are worshiping God are just trying to reverse the roles and have God satisfy their own selfish material desires.

Been a long time
Been a long time
Been a long...
Lonely, lonely, lonely, lonely time.

The Eagle has landed

Once I got started in Eagle I got a little loony. Hours go by in a flash as I work at a sub millimeter level routing connections and sorting out placement issues. It's kind of like a very seductive puzzle. I've now laid out three different circuit boards in Eagle, and it feels like I'm getting the hang of it. Two (motherboards) are based on the Arduino Mega reference design, and the other is a shield (daughterboard) that could be used with most Arduinos. The first board is what the heliostat needs, but the other variants use cheaper components that may be of interest to others (and thus are potential spinoff products). After several frustrating hours I think I've been able to source nearly all the necessary components. Mouser Electronics will sell SMD resistors for 5 cents each compared to 50 cents from Digikey! Seeedstudio's Propaganda PCB service will make the prototype circuit boards for only $5 each. I've followed several tutorials from SparkFun and I feel ready to stencil the solder paste and cook up a few boards on a hot plate. Quite the blend of low and high tech. If no major issues pop up, then the Gerber files will go to manufacturing later this week.

I went to Houston for Srila Narayana Maharaja's Bhakti Yoga Festival, although I was a couple days late because I listened to the advice of everyone around me and avoided the potential DUI checkpoints that were setup for the Memorial day weekend (since I don't have a valid drivers license at the moment). This was of course just another one of Maya's tricks (Maya - that which is not) trying to impede my spiritual progress. I was feeling kind of weak and nauseaus before I left, but immediately felt better once I got on the road. Nothing in this world compares to the mercy of the vaisnavas and the delicious prasadam at the festival.
I tried talking to various people at the festival about the heliostat project, but it seemed nobody had an understanding of the implications, or any interest in helping. At the very end of the festival, I sat down at a table by myself, and another devotee sat down and after a while we began talking. He was interested in my story, and offered to give me his old laptop (which should be fine for coding). This was yet another excellent example of the following principal: although we must make an effort (endeavor) to achieve something, success is not due to our own efforts, but rather the mercy of the Lord (and his personal representative - Srila Gurudeva).

While I was gone the 30x40 fresnel lens I ordered arrived. A quick test outside showed about a 8" long focus point (this is a linear lens designed to focus light into a line instead of a point). This quickly smoked some grass and made some mysterious stuff bubble out of a rusty scrap of metal I found in the yard. I have my doubts about whether or not this is more efficient than a parabolic reflector, but it is certainly practical for concentrating light on something like the heat tube of an ammonia refrigerator.
I'm still trying to decide what is best as a first target for testing the heliostat on. The refrigerator is "cool", but some sort of water heater would allow easier calculation of BTU/hr, thus yeilding effective wattage level.

After the Flood

Well I've had a little time now to take stock of the situation following the storm last week:
- laptop motherboard: dead
- laptop hardrive : spins, whirs, and clicks, but doesn't mount
- backup hardrive: wasn't even plugged in, won't even spin
- Freeduino board: dead
- Mirror control shield: dead
- SOC Amber webserver motherboard & daughterboard: smoke when power applied!
- USB memory stick code base backup: over month old, missing custom libraries

Truly amazing what can happen in a couple minutes when you walk away from something.

Data recovery costs $200-$800
Misc electronics $200
Backup drive $200
Replacement laptop $300
--------------------------
Total damage: $900-$1600
That's a very conservative estimate, not including lost code, time, and rebuilding effort.

Meanwhile this week the Arduino Mega board that I ordered (the day before the flood of destruction) from NKC Electronics arrived, as did the WaveShield from LadyADA. The waveshield was simple shield to assemble and I especially like the way it was designed so that remapping the pin assignments doesn't require cutting traces. I'm a little worried about being able to use the PWM on 9,10 after looking at the code. I'm hoping to have 3 pwm channels (6,9,10) for an accompaning LED light show to go with what I am calling the Bhajamatic - it plays audio loops of mantras and kirtans, with a discreet light module for small/medium altars. Audio is 16>>4 (i.e. 12) bit 16khz mono, not the best but ok, at least loads of play time from a 1Gb card. It would be nice to add a graphic display and do a slide show to go with it.


I spent the evening and some of this morning working in Eagle and finished a library entry for the SCA3000, and began editing the Arduino Mega specification board layout to include it. A little ambitious for a first project maybe, but the hookups are pretty simple, and I just followed a tutorial for another chip. The tricky part is that it's a surface mount device (SMD), and I'll have to hope the product dimensions shown on the spec sheet indicate the recommended landing pad layout which is somewhat unusual, not to mention tiny at just 7mm square. Add a DS1307 for RTC, and an H-Bridge driver w/connections and we've got a nice board...
... and I just got lost for a couple hours checking out prototype services, pcb no problem, still don't know about parts placement and reflow work. Many questions, but perhaps this is the path meant to be taken.

I've been working this week making "bliss bars" at the factory, a small step towards funding repairs. Srila Gurudev's Houston festival is next week, and things will be different afterwards!

It's dead, Jim

That's the line Doc said to Cap'n Kirk on Star Trek so many times, that's what he would have told me yesterday about my computer.
Keeping the agony in protaganist, here's a quick recap: The ambitious hero of our story, rejected by friends and family, after leaving California on borrowed funds, with nowhere else to go, has piled all his material possessions in a car and gone to Texas to spend the summer working (in the upstairs of an uninsulated cabin - can you say hot?) on an invention to save the planet. Sitting on the floor toiling all day at the computer, soldering tiny wires while kneeling over circuit boards and chanting Hare Krsna. Alarmed by the appearance of success on the horizon, the demi-gods who are worried of their powers becoming impotent due to the widespread adoption of heliostats sent a storm with powerful lightning, winds, rain, and hail to prevent their power from being usurped. Casting a spell of delusion they rob our hero of his limited intelligence, leaving his computer and software vulnerable. Like when Rama was falsely led into the forest, and Sita was snatched by the demon Ravana, our protagonist Madhu must now chase down and retrieve his code....
I've been sitting within 3 feet of my computer for probably 22 hours a day, and yesterday I stepped away for a few minutes, you know to Eat, and a huge storm blew in from nowhere and before I could even get back to the cabin the rain had blown 8' horizontally through the window saturating everything in the area, which included my guitars as well as my laptop which was on and open. The keyboard was completely saturated, and the display was looping through some nasty sounding hardware failure message that I had trouble reading because I was so frantically trying to turn it off and shut the window at the same time. The next 10 minutes or so were spent trying to get the situation under control and drying everything off. Up to 1" hail came down, the neighboors had baseball sized pieces. Good news is that the heliostat mirrrors weren't broken and the whole stand rode the storm out nicely. Measured highest wind was 21, but gusts were certainly higher.
I knew the prognosis was bad for the laptop. I dried it off as best I could and waited. After a couple hours I powered it up, but it wasn't happy and didn't boot. The BIOS setup worked though and the hard drive test also passed, so I'm optimistic about the data. Ugh, I hadn't backed up since I left California, and my last backup didn't get the motor control library! I saved a shred of hope for the morning, but all I was able to learn in the morning is that the motherboard isn't happy.
Fortunately I was able to borrow a computer to write this with.

My guru says this verse should be engraved in gold on our hearts:
Tat te 'nukampam su-samiksamano
bhujnana evatma-krtam vipakam
hrd-vag-vapurbhir vidadhan namas te
jiveta yo mukti-pade sa daya-bhak

It means that one who accepts all sinful reactions (Karma) as Krsna's mercy, understanding it to be a result of his previous activities), enduring it with an undisturbed mind, while continuing to practice devotional service with body, mind, and words - such a devotee is eligible to attain Krsna's lotus feet, which are the shelter of liberation.

I can't do that yet. I try, but I'm not qualified. My mind gets disturbed, and I become angry to avoid being sad because it's so hard to live with myself while accepting that I am the cause of all my suffering. Srila Gurudeva is slowly grinding me to a fine powder because I'm too independent to surrender to him even though I want to.

Bottom line on my computer is that I need around $300 it seems to get a used Compaq 3000 that I can pop my hard drive in, and hope the heliostat code is still there. At a minimum this is going to be a one week disruption, but given my lack of funds, probably a month. I've been working on this every day and now I either can't, or I have to redo my last month's work on the assumption that I'll have to anyway. All this is just too much to accept this soon, and I'm going to have to figure out what's next after taking a couple days off (if that's possible).

WIP: It Good

So much work in the last week...
The motor control library caused issues that made me learn more about Arduino program architecture than I thought I needed to know! My old QA skills narrowed down the offending line of code that caused the whole program to crash before it even ran (!!!) That only took a day or so to figure out and resolve. With the libraries working, I moved on to debugging the i2c command interface which had problems returning data from the slave unit because I was trying to send it one byte at a time since I hadn't read the Wire library commands. Oh the fun of being a novice. Once again there went another day of head grinding.
Then for a brief moment it seemed as if all the clouds might be disappearing, all the pieces were going together: the UI display was getting sorted, the input routines were debugged (a whole day coding manual Latitude and Longitude setting with only 5 buttons), the target and schedule tables were defined, the database routines were almost done, and still 10k of program ROM left.
Oh but the most important part, the solar position calculations was still absent! I had tested the code module long ago, and at that point was just happy to have some code that put out accurate numbers. As I started looking through the header and counting all the floating point variables, I began sensing trouble on the horizon. The SolPos algorithm uses over 1/4 of my total SRAM. Even when I commented out all the unneccessary variables and code, it still caused the 328 to reset during execution due to corruption of memory.
Yesterday I had some breakthroughs with the 128 based Amber board from SOCMachines, but it didn't turn out to be enough. It's an exciting little board with 256k of external memory and built-in ethernet connectivity. Back when I got the board, the first thing I did was the thing they tell you in bold letters not to do, and that was after reading the instructions! The result of that was that I erased the memory so that the demo program didn't run, which took some time in itself before I was able to test because I had to get a usb/serial cable and a special link cable to plug board straight into my laptops ethernet connection. After a couple months of EEPROM burner phobia, I downloaded PonyProg2000, figured out the parallel cable interface, and was soon uploading hex files both to the Amber, and the Arduino. This was cool because I learned how to upload an Arduino bootloader, and upload and run a program without any bootloader.
I was opti-mystic about the Amber being able to run an Arduino program since the new MEGA 128 based Arduino came out, but it turns out the Arduino team chose to support the 1280, and the Amber has the 128 16AU, which has 4k less of SRAM, although identical in almost all other aspects, and after much experimentation and diving into the Arduino core files, I determined that it just wouldn't work (with my level of knowledge at least).
Several more hours were spent investigating the demo program for the Amber, at the end of which I decided that it would just be too much work to port everything I've done over for it.
So the end result was that I decided to byte the bullet and buy a new Arduino Mega board (yeah)! It's still tempting to simply integrate a 3'rd processor (168 or 328) into the design, as a second slave, using the i2c bus and have it perform all the solar calculations, but that would still leave the master unit (a 328) perilously close to capacity, without network functionality added to the code base yet. So now I'll use the 128, like I knew I needed in the beginning, but it was a good learning experience the last couple of months: first with the 168 chips, then the 328 came out and doubled the memory, and now I can step up to the 128 and quadruple the 328's memory!
So bottom line is that the code base is coming along very nicely and the remaining processor issues should be taken care of as well. The new MEGA board is ordered from NKCElectronics and should be here within a week.
Oh yeah, the H1 heliostat prototype has been outside and setup for over a week now, and has endured several thunderstorms with wind gusts up to 30 mph!

Stand Up!

Well I've been in Texas for a few days and its been pretty nice. I've had time to lay the electronics out and work on things as well as build a decent prototype/test stand. The new rod I got in Santa Cruz feels totally beefy and there is hardly any flex. The stand did feel a little vulnerable though because the friction of the bicycle seat post clamp isn't really up to the wind torque that can be exerted from the forward position of the mirror assembly. I've got some heavy boards making a 6'x8' cross and the center of gravity is pretty close to the middle, while the mount is to the rear. Since it's been really windy here, I used some rope to tie the front down so it won't move. I'm going to leave it outside for a while just to observe how it handles the winds. I've got to say, I like the way it looks. It's probably just a parent's bias though. Someone else came up, looked at it, and said "I give you an A for engineering, and a C for asthetics." Ouch.

One thought about the stand is that a forward mount with some sort of provision for yaw adjustment (i.e. north/south alignment) would help solve much of the stress issues. Parking in a horizontal position also greatly reduces surface area for wind resistance and reduces loads. The final model needs to go into Park mode under high winds, probably by sensing excessive vibration rather that wind directly.

I spent all day yesterday working on the i2c bus and ds1307 clock module. I had missed a solder point on the chip socket leading to about an hour of fiddling with the software before finding the missed pin while double checking the circuit.

A significant portion of the previous day was spent building headers for the i2c cable (cat 5), and in the process of hooking everything up to get both boards and the clock all talking over the i2c bus, I realized that I had to add a reset line for the mirror/motor control module so it would properly sync up after the ui/command module booted.

The Arduino IDE has been a headache lately, I learned the hard way that multi-line parameter lists for function definitions completely throw the IDE line count off and compile errors become very hard to line up with the causative line! I'll try the new rev and see what the guys on the forum have to say about it.

My FSM for the command module needs a lot of work yet, not to mention the rest of the code issues. Slowly though it is coming together. Today I finished a routine for setting the date/time for the clock which gets triggered on boot up if the clock has lost power too, which mine does since I lost the darn battery!

Have I mentioned that this stuff takes a lot of time? No, really -- lots of time, everyday. Four months of work now. So much for that original two month schedule! Still I feel like my basic assumptions about the design are all sound, and production issues should be minimal. What is becoming more and more clear is how hard it is going to be to make people understand the significant differences between heliostat arrays and parabolic type reflectors, and the advantage of heliostats. The heliostat is just an enabling device for the target device, and as of yet I have no official target device built, so it just looks to some like I'm shooting into space. Multiple targets have to be built to demonstrate the full concept.

Texas Time

Well, I made the journey without too much drama. It was a little nerve wracking. The van wasn't running good, funds were tight, and certain legalities were put aside. I had a little moment in El Paso where I looked down for some peanuts to snack on, while waiting to leave a parking lot, and accidently rolled into the car in front of me! Fortunately there was no damage, and we both happily drove off, though I might have been a little happier than the other person was! What a close call!
I'm writing this from the cabin I helped build last fall. It hasn't been finished out inside yet, but it looks like I'm going to call this home for at least a little while now. Home is becoming an increasingly abstract concept for me after 6 years of drifting about. Though I rolled after 1am last night, I did some basic unpacking today and setup a little corner to stay in upstairs. I spent a couple hours sorting out all the little electronics that got completely jumbled up during the trip. Now all the LM74xx chips are in order, along with the CM4xxx chips, transistors, resistors, capacitors, LEDs, etc.
I looked around and found a nice 4x6 board and a 2x6 that will make an excellent stand for the prototype unit.....

Command table strings to EEPROM

Saturday I used some Naval jelly on the new rod and then gave it a nice coat of flat black paint.
I went to the temple last night in Santa Cruz and had a great time as usual. Nothing over the weekend for the email inbox. Observing Ekadasi today, energy is way down. I can really feel the stress of the last week. I'm taking some fruits and nuts to make sure I don't freak out and throw-up like last time!
Added DS1307 code to HelioCommand3 as well as introduced EEPROM routinesBegan to work on command/event loop details FSM details need definition...Worked on little sketch to write EEPROM for command module: frees up memory for other stuff by reducing cmd_tbl size and getting other strings as needed from EEPROM rather than keep them in SRAM. This also has the added benefit of architecting the software for international versions (by isolating all the strings in EEPROM separate from program ROM).
Arghh, I bought a lithium watch battery for the DS1307 but lost it before I even used it. Guess I'll make the prototype supply batter voltage from Vcc. That way I'll make a good UI for setting the clock :)

SC gives me the rod!

It was a hard day. I was really sore from tree clearing the last two days. First thing Wednesday morning I helped as everyone pitched in to fell some trees that were already on their way down. We completely limbed the first tree by hand because the chainsaw was out of order. It turned out the trees weren't too dangerous as it took quite a bit of work for us to get them separated from the other trees so they would fall. I had to pull one 60' acacia tree out with my van since it didn't fall when we cut it. Two days of almost non-stop slashing and dragging and piling. At least it probably helped the community feel better about me being here, even though I haven't taken care of any of my own needs, which means I won't have the means to stay.
Finally made it to town today though and sent out some emails. I got really sad because I haven't had any luck getting connected to support myself better. I guess I have to go to Texas. Heliostat wise it was a decent day, I tried a few metal shops on the west side of SC and found a piece of steel rod the right size (1.0625") for the support stand - $10, not bad. It's probably a little over 2' long. The guy that sold it to me weighed it at 7.5 lb before deciding the price. He also touched the rod to a grindstone just to be sure it was steel. Jaya Gurudeva! This was a good move (getting the rod) because I'll probably be a lot harder pressed to find this stuff out on the farm in Texas!
I sanded the frame down and sprayed it with some gray primer and now the old graphics on the bike frame are gone and it is starting to look like it might have some other purpose!
I also spent a little time going through the i2c h-bridge mirror motor module code (got it to compile but that was it)

OMG

I just got the heliostat mirror module to compile using libraries I created for the the motor control. Sweet. Hopefully the debug will be painless from the conversion.
It's been hard to concentrate in this environment, but it is always favorable as long as I can remember my dear Sri Sri Guru-Gauranga.
My cousin hooked me up with some nearby devotees of Srila Narayana Goswami Maharaja and I met them Friday and heard Uma didi speak. Saturday Radhanatha das gave me a ride to Berkeley and we spent the afternoon doing Hari Nama Sankirtan with about 20 devotees and Uma didi came as well. Sunday night I went again and listened to Hari Katha again.
I tried to do some networking, but it doesn't seem yet like I found any connections for here.
Texas is calling...
...but it's frustrating because its going to be so hard to get there and such a diversion for the heliostat project. I'll end up out in the middle of nowhere at Sadananda's farm, but I'll get to see Srila Gurudeva in May. The big question is what next after that.

Homeless Again

Wow, this morning as I got the batteries I had ordered (to run the motors at 24v), I was told that I have to move out. Not quite thrown out on my ass, but almost - one week notice. The way my cousin's husband is acting, I might resort to leaving sooner -- if I can figure out where to go to. Let's see: bank account? $20, wallet $38. It costs $6 just to cross the Golden Gate Bridge. I might have enough gas to get back to Santa Cruz, but what then? I spent all my money on heliostat parts so my car insurance is expired, and I can't get a sticker for my license plate, although I paid the DMV, and my drivers license even expired a couple months ago.
Taking on this heliostat project for me is like a Hail Mary pass in football - if it doesn't work, I've already lost anyway.
I've heard that entrepreneurs have a knack for underestimating the difficulty of doing things. That way they can fool themselves into trying something that no one else wants to do or has already done. That must make me qualified, if not yet successful.