Editing User:Definitionofis

=== [[Fridge Defrost Timer with Solar Trigger Option]] ===
The [http://www.youtube.com/watch?v=62LHITkTCMs project video] shows a fridge timer which can be set to trigger during high battery voltage sunny days so the defrost cycle never uses valuable battery power. It is switchable to act like a regular defrost timer for long cloudy stretches of time, like winter.

=== [[Solar panel rotator motor power with auto-shut-off]] ===
The [http://www.youtube.com/watch?v=yCeiL8_Uw2U project video] shows a way to power solar panel rotator motors from a solar panel, supplemented by a walladapter.

=== [[MPPT Solar and Wind Power Boost Charge Controller]] ===
THIS IS NOT READY. I still have more testing to do. Later, I think I will sell my nine extra boards with one LTC3703 soldered in place, for $59.95US if you want to try the circuit. After they are gone, I might release the board layout diagram, which is critical to success.

I have some documentation videos. It is 9v through 60v MPPT boost to a 48v nominal lead-acid battery. 
It needs more testing after I attach a wind turbine and a monitoring microcontroller. Otherwise, it seems to work, so far. How much power can it handle? I am not sure yet. I think 500 watts minimum and maybe 1K watts and with different mosfets and diodes and more copper over the traces, 4000 watts.

This circuit is an analogue computer, when run without a microprocessor. It is doing integration math, via the op amp. I added a jumper for optional microprocessor control. I have not tried it, yet.


http://www.opencircuits.com/images/9/97/Mppt_schematic_asof_Jul22_2012.png
@@ Line 1: / Line 1: @@
-=== [[MPPT Solar and Wind Power Boost Charge Controller]] ===
-This is an analogue computer with a digital option. It is an elegant, unique idea for MPPT. I have some documentation videos and circuit inside the link. The circuit works but I never used it much because my wind turbine project stalled. I am back: April 2016.
-=== [[Sun Tracker or Irrigation Timer to drive motors]] ===
-This is using two LEDs to sense the sun and send +- or -+ logic signals
-to a full bridge motor driver. You could also use this circuit
-to turn on an irrigation motor for a very short time every several hours.
-=== [[Wireless remote switch, button press: 1 second=ON, 3 seconds=OFF]] ===
-My solar power has to be manually switched to city power at sunset in my
-basement. I made this wireless upstairs button, instead of running a long 120vac wire to an upstairs switch.
 === [[Fridge Defrost Timer with Solar Trigger Option]] ===
-The [https://vimeo.com/spinningwindmillfredhi project video] shows a fridge timer which can be set to trigger during high battery voltage sunny days so the defrost cycle never uses valuable battery power. It is switchable to act like a regular defrost timer for long cloudy stretches of time, like winter.
+The [http://www.youtube.com/watch?v=62LHITkTCMs project video] shows a fridge timer which can be set to trigger during high battery voltage sunny days so the defrost cycle never uses valuable battery power. It is switchable to act like a regular defrost timer for long cloudy stretches of time, like winter.
 === [[Solar panel rotator motor power with auto-shut-off]] ===
-The [https://vimeo.com/spinningwindmillfredhi project video] shows a way to power solar panel rotator motors from a solar panel, supplemented by a walladapter.
+The [http://www.youtube.com/watch?v=yCeiL8_Uw2U project video] shows a way to power solar panel rotator motors from a solar panel, supplemented by a walladapter.
+=== [[MPPT Solar and Wind Power Boost Charge Controller]] ===
+THIS IS NOT READY. I still have more testing to do. Later, I think I will sell my nine extra boards with one LTC3703 soldered in place, for $59.95US if you want to try the circuit. After they are gone, I might release the board layout diagram, which is critical to success.
-=== [[Odroid XU4 Weeding Spraying Robot]] ===
+I have some documentation videos. It is 9v through 60v MPPT boost to a 48v nominal lead-acid battery.
-The [https://vimeo.com/spinningwindmillfredhi project video] shows the completed robot spraying weeds. I proved the prototype works, although it is impracticably slow.
+It needs more testing after I attach a wind turbine and a monitoring microcontroller. Otherwise, it seems to work, so far. How much power can it handle? I am not sure yet. I think 500 watts minimum and maybe 1K watts and with different mosfets and diodes and more copper over the traces, 4000 watts.
-=== [[Dandelion Flower Weed Wand]] ===
+This circuit is an analogue computer, when run without a microprocessor. It is doing integration math, via the op amp. I added a jumper for optional microprocessor control. I have not tried it, yet.
-The [vvv.com/239274466 xxx (no project video yet)] shows the Weed Wand detecting and targeting weeds. Weed Wand is ten times faster and more accurate than manually aiming and pulling a trigger on a pressurized pump sprayer.
-=== [[Li-ion battery discharge limiter]] ===
-I used a car booster battery to pump my car tires and it had no lower limit turn-off and it destroyed the Li-ion battery. I heard the air pump slow and I turned it off too late. This little device will do automatic flow-through and cut-off to protect the battery next time.
-=== [[Temperature Difference Sensor and Switch for Solar Water Circulation Pump]] ===
+http://www.opencircuits.com/images/9/97/Mppt_schematic_asof_Jul22_2012.png
-This circuit uses two diodes as heat sensors to switch a circulation pump ON when the water on the roof solar water collector is hotter than the hot water storage tank in the house.