Hobby Robotics circuit | Next Electronics

Perfect Pitch, which is based on the 8751 microprocessor, is an affordable and straightforward instrument tuner and frequency counter that features a built-in headphone amplifier and a visual metronome. Perfect Pitch converts the audio signal from an instrument into a...

arduino serial thermometer

The Arduino reads temperature from an MCP9700 temperature sensor IC and displays the temperature in the Arduino IDE serial monitor window. The circuit utilizes an Arduino microcontroller along with an MCP9700 temperature sensor integrated circuit (IC) to measure ambient temperature. The...

Bug Eyed Eggliner

The Bug-Eyed Eggliner project involves creating a whimsical animated figure with large, illuminated, and movable eyes. The project utilizes a combination of wooden balls for the eyes, a PICAXE microcontroller for control, and a servo mechanism to achieve eye movement....

Power supplies for microcontroller based projects

This document discusses the use of small microcontrollers, such as those from the PIC and Atmel series, which typically operate at 5V and require less than 100mA for complete system functionality. Some PICs can function at lower voltages, such as...

Arduino and ATMega8

A programming jig has been constructed to eliminate the need for maintaining the circuit on a breadboard. Additional details and photographs are available on the Learning About the AVR Parallel Programmer page. The programming jig serves as a dedicated platform for...

Arduino Audio Triggered Power Switch

Have you ever wanted your home entertainment or sound system to power on automatically when plugging in your iPod or another portable MP3 player? To achieve automatic power activation of a home entertainment system when a portable device is connected,...

Arduino Multiplexing

The Nixie tubes being utilized have 10 cathodes shaped like numerals and a screen-like anode. These are vintage Russian IN-12A tubes sourced from a reputable Ukrainian shop on eBay. Other types of Nixies may feature additional cathodes for displaying a...

Miniature Real-time Controller

This is my long history the device that controls my home's night light, air-conditioner, etc. The device is a Miniature Real-time Controller. The circuit uses only three chips, a 89C2051, DS275 (or MAX232), and 74LS07 open collector driver. The scheduler...

Worlds Smallest Stepper Motor with Arduino and EasyDriver

A video and the circuit with schematics for connecting and controlling the world's smallest linear actuator based on a bipolar stepper motor from a Blu-ray drive. The project involves the design and implementation of a circuit to control a linear actuator,...