nop head writes: I came across a very useful post by Thomas Scherrer that describes how to read data from a Peacefair PZEM-021 energy meter by spying on the SPI bus with an Arduino. I decided to do the same thing with an ESP-12F WiFi module so that I could view the results remotely and […]
Tag Archives: SPI bus
Tutorial: Arduino and the SPI bus
Tronixstuff has posted a great tutorial explaining how to use the Arduino and the SPI bus. This detailed tutorial is presented in two parts. Part 1 presents the basic theory on the serial peripheral interface (SPI), including examples of using the eals with a Microchip MCP4162-series 10k rheostat and an Analog Devices AD5204 four-channel digital […]