Arduino

An Arduino auto ranging ohmmeter is easy to implement using an Arduino Uno or other Arduino development boards. And depending on the implementation, it can… Read More »Arduino Auto Ranging Ohmmeter, Part 1

The ESP-01 ESP8266 module can be controlled directly, without using any WiFi router at all. To extend the range of the ESP-01 control, it can… Read More »How to Control ESP-01 thru a Router

The ESP-01 module is the smallest and the cheapest of all ESP8266 development boards. People usually program it for use via the Internet. The ESP-01… Read More »How to Control ESP-01 Without a Router

In order to safely connect an LED to a circuit, a current limiting resistor is placed in series with the LED. It is quite easy… Read More »How to Compute Resistor Value for LED

The ESP-01 module is a popular ESP8266 development board. Its popularity stems from its low cost and its small form factor. But one disadvantage of… Read More »ESP-01 with RTC and LCD Display

It is possible to make a digital clock out of an ESP-01 ESP8266 module synchronized with NTP (Network Time Protocol) and using a 20×4 LCD… Read More »ESP-01 ESP8266 NTP Clock with LCD Display

To program an ESP-01 module with Arduino IDE, the module needs to be connected to a programmer adapter. What keeps the ESP-01 module apart from… Read More »How to Program ESP-01 with Arduino IDE

We may want to save and later restore ESP8266 and ESP32 firmwares that came with them and were installed from the factory. It will come… Read More »How to Save and Restore ESP8266 and ESP32 Firmware

This article on how to install Esptool on Windows 10 was written because I remembered that I had been for a time wondering how to… Read More »How to Install Esptool on Windows 10