dual bi color led matrix shield circuit

The Arduino system provides a straightforward and open-source approach for programming microcontrollers. Typically, this involves using a serial or USB cable directly connected to the microcontroller project. However, challenges arise when the project is located in inaccessible areas, such as...

Glue stck torch

This project, developed around 2005, involves constructing a torch using a glue stick, which conveniently accommodates an AA battery within its plastic casing. To create a functional battery holder, contacts for both the positive and negative connections are necessary. The...

Arduino DAC Signal Generator project

Once the circuit receives power, all variables are initialized, and the loop function runs continuously. Initially, all LEDs are off, and there is no output signal. Pressing the signal switch activates the first LED, indicating the output signal. The D0-D7...

sd card logging

This documentation was compiled as a result of a bee hive temperature monitoring project. Multiple DS18B20 temperature sensors were used to sense the temperature at various locations in the hive. An Arduino with a Nuelectronics sensor shield was used to...

Arduino Calibration

This example demonstrates a technique for calibrating sensor input. The Arduino takes sensor readings for five seconds during startup and tracks the highest and lowest values obtained. These sensor readings during the first five seconds of the sketch execution define...

Controlling a LED using a switch

To create the circuit, connect a switch as an input and an LED as an output to the Arduino. The components required include a switch, an LED, a 10kΩ resistor, a 470Ω resistor, a blue or yellow jumper wire, and...

Arduino Guitar Delay Pedal

An attempt at an Arduino guitar pedal. The guitar signal feeds through a PT2399 delay circuit, modified to include a JFET preamp phase. The delay circuit has Echo and Delay knobs. From there, it feeds into an optoisolated-Arduino-5V preamp, and...

Robot shield for Arduino

The objective of this project is to consolidate various robot designs and transform them into a new device featuring updated hardware and standardized software, specifically utilizing Arduino for ease of use. These robots share three key components: a mechanical structure,...

Water Level Sensor with Arduino Ethernet

This project implements a network-connected water level sensor that measures the water level in the sump pit of a house. It is connected to the home network and reports the water level by broadcasting UDP packets, allowing any computer to...