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1kW Arduino MPPT Solar Charge Controller (ESP32 + WiFi)
220 ohm do nice job. Thank You.
2-Player Bartop Arcade Machine (Powered by Pi)
Pulling Up Small Trees, the Easy Way.
PiScope (Raspberry Pi Based Oscilloscope)
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Oscilloscope in a Matchbox - Arduino
How to CORRECTLY Solder a Copper Pipe
Thanks for instructabmle. Device is realy sturdy, nothing to repair jus a check after years of use. Maybe to replace internal clock battery...
The Smallest Workshop in the World
Arduino Magnetic Stripe Decoder
This is not the case. Search on net, this leds are complex and are driven by Vf 20V each.For example:http://runlite.gmc.globalmarket.com/products/details/led-high-voltage-5730-five-chips-led-diode-1829171.htmlOr http://www.ledsmagazine.com/articles/print/volume-8/issue-4/features/high-voltage-leds-offer-optimum-solution-for-indoor-retrofit-lamps-magazine.html
Hi, thanks for replaying. Ok. Just opened working one, dc voltage is 190V ! So this are not ordinery leds, there are 10 leds, so voltage across each is 19V, never heard of these. This high forward voltage probably is reason why my multimeter can't check these ...PS.Just searched net, there are some sort of led series arays with 20V DC firward voltage...
Hi, thanks for replaying. Ok. Just opened working one, dc voltage is 190V ! So this are not ordinery leds, there are 19 leds, so voltage across each is 19V, never heard of these. This high forward voltage probably is reason why my multimeter can't check these ...
Testing with meter shows that cicruit is whole, led are measured as break in both directions... When desoldering led board from supply board (+&- points), two of the leds were blinking wery fainted. Supply board shows output 400 VDC and around 30VAC but ac value is varying from 11 up to 70VAC...
Opened led bulb, but every led inside is burnt out, simple design. Have three more of these bulb instaled, probably won't last long. Installed leds last year.
3d scan anything using just a camera
Cheap radiator reflectors to lower your fuel bills
Illuminate Lightbulbs Wirelessly: DIY Slayer Exciter
Great tutorial, thanks. Driled 2mm glass without problem. Used dremel, round bit with diamond coat and glass was covered with thin layer of water, abou 1cm. It took some time, but did not cracked.
Low Cost Arduino Jammer 433 Mhz
Building your own CNC router/milling machine
CNC milling stone
Make your own PCBs on an inexpensive desktop CNC mill
Easy Android controllable, PC Interfaceable Relatively Cheap Mini Quadcopter (or Octocopter!) Drone...
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DIY AA Batteries!
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