![Amazon.com: 4-Channel Current/Voltage/Power Monitor HAT Via I2C / SMBus Interface Embedded 12-bit ADC for Raspberry Pi / STM32 @XYGStudy : Electronics Amazon.com: 4-Channel Current/Voltage/Power Monitor HAT Via I2C / SMBus Interface Embedded 12-bit ADC for Raspberry Pi / STM32 @XYGStudy : Electronics](https://m.media-amazon.com/images/I/61sbBF0vBaL._AC_UF894,1000_QL80_.jpg)
Amazon.com: 4-Channel Current/Voltage/Power Monitor HAT Via I2C / SMBus Interface Embedded 12-bit ADC for Raspberry Pi / STM32 @XYGStudy : Electronics
![I designed, built, and coded a custom whole-home power monitor with sub-second resolution. All free and open source! Details in the comments. : r/raspberry_pi I designed, built, and coded a custom whole-home power monitor with sub-second resolution. All free and open source! Details in the comments. : r/raspberry_pi](https://i.redd.it/473t6zsu1a751.png)
I designed, built, and coded a custom whole-home power monitor with sub-second resolution. All free and open source! Details in the comments. : r/raspberry_pi
Four Raspberry Pi devices and a power meter are shown. See the demo... | Download Scientific Diagram
![Amazon.com: 4-CH Current/Voltage/Power Monitor HAT for Raspberry Pi 4B/3B+/3B/2B/B+/A+/Zero/W, I2C/SMBus Interface Onboard 0.1Ω 1% Sampling Resistor Measure Bi-Directional Current up to 3.2A Embed 12-bit ADC : Electronics Amazon.com: 4-CH Current/Voltage/Power Monitor HAT for Raspberry Pi 4B/3B+/3B/2B/B+/A+/Zero/W, I2C/SMBus Interface Onboard 0.1Ω 1% Sampling Resistor Measure Bi-Directional Current up to 3.2A Embed 12-bit ADC : Electronics](https://m.media-amazon.com/images/I/71XXAYpf4UL.jpg)