ESP8266 Fan Speed Control with DS18B20 Temperature Sensor
This simple project controls the speed of a fan based on the reading from a temperature sensor. The video below shows the fan speed changing when the temperature sensor is moved…
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ESP8266 Sending Data Over Wi-Fi to another ESP8266
A simple guide to sending data from one ESP8266 to another over Wi-Fi using an ad-hoc, device to device network, without using a wifi router. The ESP8266WebServer library allows…
ESP8266 Built-in OLED – Heltec WiFi Kit 8
A set-up guide for the Heltec WiFi Kit 8 development board (an ESP8266 with built-in OLED display). Follow the easy steps below to get up and running with this board…
WINEXT SX1278 LoRa Module
A first look at the WINEXT SX1278 LoRa Module available from banggood.com. I bought this as it will be easier to solder connections to than the bare Ra-02 boards. This is the…
Heltec WiFi LoRa 32 – ESP32 with OLED and SX1278
Some initial information to get up and running with the Heltec Wifi Lora 32 Kit Module. These are available from the Heltec store on AliExpress. Like a lot of these devices this…
Arduino UNO with Ai-Thinker RA-02 SX1278 LoRa Module
A set up guide for sending LoRa data using the Arduino UNO with the RA-02 module by Ai-Thinker. I’ve seen a few people asking how to set this up in various places.…
ESP32 Built-in OLED – Heltec WiFi Kit 32
An introduction and set-up for the Heltec Automation WiFi Kit 32 development board with OLED display. Follow the steps below to have the example WiFiScan script show your local…
Arduino Uno with NEO GPS and OLED
This project displays the latitude and longitude from a GPS sensor on an OLED display using the I2C protocol. In the video below you can see a splash screen is displayed with some…
PIR Movement Detector with a 3v Mosfet Relay
The 3.3v output from a PIR movement detector doesn’t have enough current to energise a mechanical relay. With a little modification it is possible to make it work with a…
ESP8266 with two BME280 Sensors over SPI
I had a problem with the wiring on this one. With SPI you use the same pins for SCLK (SCL pin on the BME280 boards) , MOSI (SDA pin) and MISO (SDO pin) and then each SPI sensor…