Ignition coil tester
- Hardware
- Mains voltage
A tester that powers the coil from the mains so you can see the spark, on its own or with the spark plug. Triac circuit with snubber.
Open the project: Ignition coil tester// Electronics · Microcontrollers · Home automation
Electronics projects
Circuits and microcontrollers (Arduino, ESP32, XIAO) with the schematic, the component list, the explained code and the files to download. Every project can be understood, rebuilt and modified.
Electronics
Discrete-component circuits: mains loads, sensors, timers.
Digital triac relay
- Hardware
- Mains voltage
A small circuit that drives AC loads up to 4 A from a 2 to 5 V signal, PWM included.
Open the project: Digital triac relay
Twilight switch with presence sensor
- Hardware
- Mains voltage
Turns a lamp on when someone is present and the ambient light is below a threshold; it stays on for an adjustable time.
Open the project: Twilight switch with presence sensorMicrocontrollers
Arduino, ESP32, STM32: sensors, displays and firmware.
Weather station with Arduino Nano
- Hardware
- Code
Temperature, humidity, pressure and altitude on a colour display, with two sensors (DHT11 and BME280).
Open the project: Weather station with Arduino Nano
Lux meter with Seeeduino XIAO
- Hardware
- Code
An inexpensive lux meter built with an XIAO board, a TSL2591 sensor and a colour display.
Open the project: Lux meter with Seeeduino XIAO
Sketch upload problems on ESP32, Lolin and NodeMCU boards
- Hardware
The “Failed to connect to ESP32: Timed out waiting for packet header” error and a fix with a 10 µF capacitor.
Open the project: Sketch upload problems on ESP32, Lolin and NodeMCU boardsPLC
Programming Omron and Siemens PLCs.
New projects coming soon.
Home automation
Lights, temperatures and home automations.
Domotica Casa
A home automation system with an ESP32 server and nodes (lights, doorbell, boiler), documented step by step. The server and every node have a dedicated page, with the description and the material to download.
Project videos
Many projects come with a video showing the test and the explanation: you can find them all on my YouTube channel.
Go to the YouTube channel (opens in a new tab)