In the previous installment of this series, we discussed the schematics, and circuit isolation strategies of the ESP32 Energy Meter. Now let’s discuss further enhancements, a PCB design, and more. In ...

One ESP32 board flashed with modbus_master example. All the boards require connection of RS485 line drivers (see below). The MAX485 line driver is used as an example below but other similar chips can ...

Before attempting flight, ensure all components are functioning correctly by testing them individually using the codes provided in the testing folder: Use /ESP32 ...

LilyGo T-Relay-8 is an ESP32 WiFi & BLE board equipped with eight 5V relays supporting up to 250V AC or 28V DC, as well as 16-pin GPIO header for expansion. The board offers a more compact solution ...

Many times like a multimeter, I expected to have a handy serial terminal nearby such that I will connect those two wires [Tx, Rx] of the probe and will be able to see whether the sensor is really ...

Waveshare ESP32-S3-Relay-6CH is a 6-channel WiFi and Bluetooth relay module based on Espressif Systems ESP32-S3 wireless microcontroller that also supports RS485 control and comes with headers taking ...

Hobbyists, electronic enthusiasts and makers may be interested in a new 4 channel relay board aptly named the RelayFi. The 4 channel smart relay board is powered by a ESP32 WROOM providing the ability ...

Reliable off-grid communication has always been a challenge for hobbyists, makers, and outdoor explorers. Whether you’re hiking deep in the mountains, setting up a temporary field station, or working ...

This Cube project uses LED panels for a 3D physics simulation. The creator used ESP32, WS2812b control, and limited external libraries. The source code is available on GitHub, with a possible PCB ...