| High CO2 concentrations can cause problems in areas of minimal ventilation. This CO2 guard offers a solution. The design, constructed with t...
More about ESP8266 (81)
| In industrial control systems, as well as in home automation, it's accepted practice to control and observe the current process using so...
| Here is yet another fruit of lockdown labor. With some time and effort, you too can combine four 16x16 NeoPixel LED matrices into one large...
| The CO2 Guard monitors indoor air quality (IAQ) by measuring the carbon dioxide concentration of the air. Keeping it below 1000 ppm helps mi...
| NTP-based Internet time, WS2812-type RGB LEDs, and a Wi-Fi connection with an ESP8266 are three popular ingredients for building clocks. Thi...
| NeoPixel clock using NTP and a minimum of hardware.
| You know these boxes full of boards you keep around for some future when you will have more time? Having a need for an ESP8266 module for my...
| I recently came across an ESP8266-based “wearable” board I developed some years ago. Here's how I brought the board to life with the help of...
| Use a 2.4 GHz receiver in a small drone or RC aircraft to find people lost in remote areas without cellular coverage. If they carry a smartp...
| The Elektor LoRa Switch published in the March-April 2020 issue of Elektor Magazine has a nice relay board that can easily be used in Wi-Fi...