Raspberry Pi Pico is the first microcontroller from the manufacturers of Raspberry Pi, based on the Raspberry Pi’s RP2040 microcontroller chip and working on ARM’s Dual-core cortex M0+ architecture.

This guide will show you how to turn any CircuitPython powered board with 4+ GPIO pins into an AVR progammer all on its own. No software like avrdude is needed, this software will program the chip all on its own, just drag the HEX file onto the CircuitPython disk drive.

Stepper motor is brushless DC motor, which can be rotated in small angles, these angles are called steps. Generally stepper motor use 200 steps to complete 360 degree rotation, means its rotate 1.8 degree per step. Stepper motor used in many devices which needs precise rotational movement like robots, antennas, hard drives etc.

We can rotate servo motors to any particular angle. They are available in wide range, form high torque motor to low torque motors. In this tutorial we are going to interface a servo motor to 8051 microcontroller (AT89S52).

In this project we are going to design a 25V range digital voltmeter by using ATMEGA32A microcontroller. In ATMEGA, we are going to use 10bit ADC (Analog to Digital Converter) to build a digital voltmeter. Now the ADC in ATMEGA can not take a input more than +5V, so for getting a higher range we are going to use a voltage divider circuit.