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    • openhardware.io

      💬 MySX Power Board 18650
      OpenHardware.io • battery power supply power mysx 18650 • • openhardware.io  

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      No one has replied

    • openhardware.io

      💬 No neutral power supply/relay board for in wall switch
      OpenHardware.io • switch power supply • • openhardware.io  

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      mtiutiu

      @berkseo Yes, it's available here. The documentation is a little bit scarce I admit but if you understand Apache MyNewt and its build system it should be pretty straightforward theoretically. I will add more details when I have the time. The code was tested and it's in production. Works without a glitch so far.
    • openhardware.io

      💬 The Harvester: ultimate power supply for the Raybeacon DK
      OpenHardware.io • power supply usb charger solar raytrails mppt teg • • openhardware.io  

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      NeverDie

      @NeverDie said in The Harvester: ultimate power supply for the Raybeacon DK: Edit: This guy found another couple of possibilities as to what the E50D chip might be: https://www.electroschematics.com/pfm-module-circuit-surgery/ I have the same board as this guy. I removed the LED and resistor because they are on the input side, so they are almost useless anyway. For a board such as this, with a promised 0.9v startup voltage on the input side and a promised 5v on the output side, they really should have been attached to the output, not the input, to show roughly when it is that the board is producing useable output. At a 20mv "keep alive" input voltage, the input measures 0.5ma using a uCurrent Gold. That means the keep alive energy is 10 microWatts. Offhand, for the application we've been discussing on this thread, I suspect that number is too high to be practically useful, because at only 20mv input we'd be collecting far less than 0.5ma current from a tiny panel. At least now we know.
    • Danielo Rodríguez

      Can I power arduino (or other mcu) from PIR output?
      Troubleshooting • pir power supply • • Danielo Rodríguez  

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      Honk

      It might be possible to power the Arduino off the output pin. Since they are dirt cheap I would just test it. But like the others I would suggest to use the interrupts of pin 2 and 3. For my battery powered 3.3v pro mini I use 3.3v pir sensors without the voltage regulator. The standard 5v pir needs at least 4.5v just to step it down internally to 3.3V. On these I had problems with voltage stability because I stepped it up to 5V. Also the battery lifetime was poor. With the 3.3v pir version this thing runs for months. With the solar panel on top maybe forever.
    • openhardware.io

      💬 Mini Dimmer Box
      OpenHardware.io • mysensors atsha204a ota dimmer power supply acdc rgb acs712 • • openhardware.io  

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      Koresh

    • openhardware.io

      💬 In-wall scene controller PSU
      OpenHardware.io • mysensors power supply scene controller wall switch dbemowsk • • openhardware.io  

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      dbemowsk

      @bisschopsr I now have the schematics posted for all of my boards. I also posted another board for my in-wall scene controller line. Is there any other pics or information that you think might be useful to others for any of these boards?
    • openhardware.io

      💬 Super-capacitor-power-supply-for-wireless-sensors-w-charger
      OpenHardware.io • power supply boost converter supercap • • openhardware.io  

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      Noki

      @ceech I really like this design, however I think it has a problem: According to the datasheet the TPS610986DSET has no feature to disconnect the load at low battery voltages. I think the result will be that e.g. a ESP32 or other power hungry chips will not power up properly. The TPS63031 might therefore be a better fit. btw.: Do you still sell assembled versions of this design? Would you be willing to create a new version with the TPS63031 and probably also with 10 or 20F capacitors or an board to solder your own capacitors. Best regards Tobias
    • robosensor

      Encapsulated transformers instead of traditional switching power supplies like Hi-Link
      Hardware • power supply power 220v psu transformer 230v galvanic isolation • • robosensor  

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      robosensor

      @m26872 said in Encapsulated transformers instead of traditional switching power supplies like Hi-Link: for me the sunny season is too short. I havn't yet tried to use solar batteries in winter so maybe I have the same problems (despite the fact that I'm living 3 degrees south of you), but I have backup solution for very cloudy winter days - regular battery charger.
    • openhardware.io

      💬 Mini Relay Box
      OpenHardware.io • relay atsha204a mysensor ota power supply acdc rgb • • openhardware.io  

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      shabba

      Hi @koresh - I had a little accident on the AC side :-). I was wondering what values the 2 resistors (TH and SMD) and diode are ? Thanks!
    • openhardware.io

      💬 Power path manager and battery charger w/ 5V and 3.3V output
      OpenHardware.io • battery power supply charger • • openhardware.io  

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      ronie88

      What is the max ampere capacity of 3.3V battery it can charge ? Is there any upper limit like 1000mAh or 3300mAh like that ?
    • openhardware.io

      💬 Wall Socket Insertable Node
      OpenHardware.io • mysensors relay rfm69 atsha204a power supply • • openhardware.io  

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      Nca78

      @yury said in Wall Socket Insertable Node: Looks cool! Do you have experience with capacities switches? I did not play much with them. afraid to use close to AC interference though... You need to use a capacitive IC with active shielding, basically you have an extra electrode around your touch electrode and the touch IC will compare capacitive change of the touch electrode with capacitive change from the shield electrode. If the change is due to electrical interference then both electrodes will be changed in a similar way and the IC will not trigger.
    • openhardware.io

      💬 AC/DC/Batteries capable atmega328p board
      OpenHardware.io • nrf24l01 battery atsha204a atmega328 power supply flash regulator • • openhardware.io  

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      mfalkvidd

      @MiKa which box are you referring to? Generic boxes are available here: https://www.mysensors.org/store/boxes
    • openhardware.io

      Arduino Power Supply
      OpenHardware.io • arduino power supply • • openhardware.io  

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      ahmedadelhosni

      I like the project. I guess the circuit is not a clone. It costs a lot actually. Is there any other alternatives than cost < 5$ ?
    • ceech

      Energy harvester
      My Project • power supply supercapacitor • • ceech  

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      ceech

      @epierre You can use a Peltier element to power this board. Like this one: http://www.ebay.com/itm/TEC1-12706-12V-60W-Heatsink-Thermoelectric-Cooler-Cooling-Peltier-Plate-Module-/121349774916?hash=item1c41029e44:g:mukAAOSwDNdVrg-U