This project makes the “dots” on a dot matrix look like they are pebbles in a container. Tilt the device on one side and the dots fall toward that side. The same goes if the device tilts to the other side.
Read More »Dot Matrix Droplets Project
How to Use TM1637 and Four Seven Segment Display Module
A seven segment display has one pin for each of its seven segments. This means if directly interfaced with a microcontroller, you will need at least seven pins. Fortunately, there is a way to use four seven segment displays and using only four pins from your Arduino.
Read More »How to Use Load Cell with HX711 and Arduino
Measuring an object’s weight can sometimes be part of a bigger project. And unless you have a good reason, you wouldn’t want to use an analog weighing scale. A digital weight sensor is easier to interface with, not to mention its accuracy and durability against an analog weight sensor. In …
Read More »ESP32 MAX7219 WiFi Message Board
This ESP32-powered project allows you to write messages to a MAX7219 LED matrix display using your smartphone. Scaled up, this can be used as a WiFi message board for schools or signages for businesses.
Read More »ESP32 Magnetometer using HMC5883L
For this article, I will show you how to use an ESP32 microcontroller as a magnetometer - a device that measures the direction and strength of a nearby magnet. In the absence of a nearby magnet, the device detects the Earth’s magnetic field. Hence, a compass is a type of …
Read More »IATF 16949 and What It Means in PCBs
Sponsored Post from NextPCB PCB manufacturers often present their customers with an IATF 16949 certificate on top of known certifications such as UL and ISO. What is this certification and why should we care about it?
Read More »WiFi Servo Controller using WeMos D1 Mini
In this article, I will guide you to the steps on how to build a WiFi servo controller project using the WeMos D1 Mini ESP8266 breakout board.
Read More »How pinMode, digitalWrite and digitalRead Work
I believe what makes Arduino popular is how it makes microcontrollers easier to use. I remember the time when I have to spent hours coding a project and then spend money on programming hardware. Arduino has its limitations, but the platform helps create tons of electronic projects even for non-engineers. …
Read More »ESP32 Turbidity Sensor
The ESP32 has become one of my favorite microcontrollers as it's compact, relatively cheap, and contains 125% higher memory than an Arduino UNO.
Read More »How to Send SMS with Raspberry Pi
It’s 2020 and sending SMS is now an old technology. But such technology remains to be a cheap and indispensable way to communicate over long distances. In this article, I will share how I send SMS with the Raspberry Pi.
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