A home to software testing, electronics circuits & projects, tips and tricks and digital diary.
A home to software testing, electronics circuits & projects, tips and tricks and digital diary.
In this project, we build an electronic dice circuit using two popular integrated circuits: the NE555 timer and the CD4017 decade counter. This project is part of the DigitalLab Beginner Electronics Series and is designed to help beginners understand timer…
A continuity tester is one of the most useful tools for anyone working with electronics. It helps check whether a wire, switch, connector, or PCB track provides an electrical path between two points. In this episode of the DigitalLab Beginner…
Want to know when a tank is filling up without writing a line of code? In this beginner-friendly project, we build a water level indicator from a few transistors, LEDs, a buzzer and some probes dipped in water. We start…
In EP1 we built the core of the logger with an ESP32, a NEO-7M GPS module and a microSD card. In this final episode we add a 2.8-inch ILI9341 TFT dashboard, test the logger on a real 15 km drive,…
Project objective In this project, we build a simple magnetic door/window alarm using: The magnet activates the reed switch, which turns ON the transistor. The transistor then switches both the buzzer and LED. Circuit Diagram In version 2 we invert…
In this project, we are building an ESP32-based GPS Data Logger using the NEO-7M GPS module and a microSD card. The goal is to capture GPS information such as latitude, longitude, speed, date, time, and satellite count, and save the…
In Episode 6 of the ESP32 Portable WiFi Scanner project, we take the project one step further by adding battery monitoring. The scanner is designed to run as a portable device using an 18650 Li-ion battery, so being able to…
In the previous episode, we expanded our ESP32 WiFi Scanner by adding BLE scanning and battery/power support. In this episode, we take the project one step further by introducing a touchscreen-based navigation system. The goal of EP5 is to transform…
In the previous episodes of the ESP32 Portable Wi-Fi Scanner project, we built the project step by step. In Episode 1, we created a basic Wi-Fi scanner that displayed nearby networks on the Serial Monitor. In Episode 2, we added…
In Episode 1, we built a basic ESP32 Wi-Fi scanner and displayed nearby Wi-Fi networks on the Serial Monitor. In Episode 2, we moved toward a graphical interface by setting up a 2.8-inch TFT display based on the ST7789 controller.…