PPPM - A Power Meter based on RP2040 and INA219 with OLED
Designed by Hand Crafted Electronics in Germany
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V3 is out now! Get your PPPM now! What is it? The PPPM performs Voltage, Current and Power measurements in low voltage systems. With a max. input voltage of 26V and a max. current of 3.6A it is suita…
Read More…The PPPM performs Voltage, Current and Power measurements in low voltage systems. With a max. input voltage of 26V and a max. current of 3.6A it is suitable for any 12V powered device.
You can use it in your caravan, camper, boat, yacht, lab and just about anywhere you want to monitor the voltage of your system and the current drawn by the devices.
A 0.1 Ohms shunt performs the measurements on the high side of the system.
With a bit of programming in micropython and soldering you can easily extend the functionalities and the max. current.
I needed a device to easily measure the power output of a power supply. Normally, I needed to take two measurements with my one multimeter.
Corrected Silkscreen and minor fixes
The device comes with ready to use firmware. The button cycles through the pages. The green LED blinks.
Photos from Version 1 only for reference!
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