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=== Open hardware stenotype chorded keyboard === | === Open hardware stenotype chorded keyboard === | ||
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Maximum power point tracking makes a solar panel, wind turbine, et cetera, achieve maximum efficiency. | Maximum power point tracking makes a solar panel, wind turbine, et cetera, achieve maximum efficiency. | ||
− | === [[Fridge Defrost Timer | + | === [[Fridge Defrost Timer timed for sunny days solar power]] === |
− | The [https://vimeo.com/177809415 project video] shows a fridge timer which can be set to | + | The [https://vimeo.com/177809415 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]] === | === [[Solar panel rotator motor power with auto-shut-off]] === | ||
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=== [[Sun Tracker or Irrigation Timer to drive motors]] === | === [[Sun Tracker or Irrigation Timer to drive motors]] === | ||
− | This is using two LEDs to sense the sun and send power to satellite arm motors to turn solar panels toward the sun. You could also use this to turn on an irrigation motor for a very short time every several hours. | + | This is using two LEDs to sense the sun and send power to satellite arm motors to turn solar panels toward the sun. You could also use this circuit to turn on an irrigation motor for a very short time every several hours. |
== Scoring Machine for Fencing == | == Scoring Machine for Fencing == | ||
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* Highly immune to multipath fading, interference | * Highly immune to multipath fading, interference | ||
* 5mS Channel Dwell Time | * 5mS Channel Dwell Time | ||
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== Serial Communication Protocols == | == Serial Communication Protocols == |