Archives: Projects

This project will help you to easily develop an Arduino compatible project that requires 3 x 7-Segment 0.5" displays. These are common cathode displays that use multiplexed configuration, BC847 transistor drives 3 x common cathodes, all display segments are connected to the...

This is an Arduino compatible board for creating 2 Digit Display projects. The circuit operates with 5V DC, Connector CN1 is provided for bootloader programming and Arduino firmware upload. A new Atmega328 chip requires a bootloader and Arduino firmware programming, Connector CN1...

This is a very powerful brushed DC motor drive system in a small package with a few key features like adjustable constant current control, direction control, brake controls, Alert output, PWM for speed control etc. The project was built using a TB67H303HG chip which is a full-bridge...

This is a very simple bidirectional speed control of a small DC brushed motor. The project is built using power OPAMP TCA0372 which can drive a load up to 1A. Connecting a small DC motor and trimmer pot will control the motor forward/reverse operation along with speed control. A...

The project described here is a 3 channel capacitive touch sensor based on CAP1203 chip from Microchip which is a multiple-channel capacitive touch sensor controller. It has 3 x individual capacitive touch sensor inputs with programmable sensitivity for use in touch sensor...

This 4 Digit 7 segment display project contains 4 x Common Cathode displays, current limiting resistors or each LED segment, 4 x PNP transistors on each common cathode for multiplexing, etc. This is a very compact project that works with 5V TTL signals but can be optimized for 3.3V...

This 2 Digit 7 segment display project contains 2 x Common Cathode displays, current limiting resistors or each LED segment, 2 x PNP Transistor on each common cathode for multiplexing, etc. This is a very compact project that works with 5V TTL signals but can be optimized for 3.3V...

This is a back EMF signal conditioning circuit that can be used to develop high-voltage sensorless motor drivers. When a sensorless algorithm is used to control the BLDC motor speed, the Back EMF (BEMF) signals are used. Based on zero crossing of BEMF signals, motor commutation is...