Arduino RPM Counter Using an Optical Sensor
Arduino RPM Counter Using an Optical Sensor Building an RPM (revolutions per minute) counter is a classic and useful Arduino project. This guide walks you through creating an optical tachometer...
38-3D Blog
Arduino RPM Counter Using an Optical Sensor
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Using the RC522 RFID Module with the Raspberry Pi
The RC522 RFID module allows the Raspberry Pi to read and write RFID (Radio Frequency Identification) tags, making it useful for access control, automation, and IoT projects. This guide will show...
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Using the AT24C256 EEPROM with the Raspberry Pi
The AT24C256 is an I2C EEPROM (Electrically Erasable Programmable Read-Only Memory) that allows the Raspberry Pi to store and retrieve data even after power loss. This guide explains how to interface...
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Communicating with an Arduino Using a Raspberry Pi
The Raspberry Pi and Arduino can communicate with each other using different protocols, including Serial (UART), I2C, and SPI. This guide will show you how to set up communication between a...
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Using the TCS34725 with the Raspberry Pi
The TCS34725 is a color sensor module capable of detecting red, green, blue (RGB), and clear light values. It’s widely used in applications such as ambient light sensing, color detection,...
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Using the TCA9548A with the Raspberry Pi
The TCA9548A is an I2C multiplexer that allows you to connect multiple devices with the same I2C address to a single Raspberry Pi. It works by isolating each I2C device...
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Using the AHT10 with the Raspberry Pi
The AHT10 is a temperature and humidity sensor that communicates using the I2C protocol. It provides accurate readings, making it ideal for environmental monitoring, IoT projects, and weather stations. This...
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How to Measure Current with a Multimeter
Measuring current with a multimeter is an essential skill for diagnosing electrical circuits, verifying power consumption, or troubleshooting electronics. This guide will walk you through the step-by-step process of safely...
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Using the BMP180 With the Raspberry Pi
Here’s a simple guide on how to use the BMP180 barometric pressure and temperature sensor with your Raspberry Pi. The BMP180 sensor can measure atmospheric pressure and temperature, making it...
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Setting up Self-Hosted Bitwarden on the Raspberry Pi
Bitwarden is an open-source password manager that helps you store and manage your credentials securely. Hosting your own Bitwarden server on a Raspberry Pi gives you full control over your...
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Using a Push Button Switch with the Raspberry Pi
A push button switch is a simple yet effective input device often used in projects like starting or stopping processes, controlling LEDs, or triggering events. This tutorial will walk...
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Installing Portainer on the Raspberry Pi
Portainer is a lightweight management UI for Docker that simplifies the process of managing Docker containers. It offers an intuitive web interface to deploy, configure, and monitor containers. This...
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Using a Rain/Snow Sensor with the Raspberry Pi
A Rain/Snow Sensor is a useful device for weather monitoring systems. It detects rainfall or snow and can trigger alerts or automate actions based on weather conditions. This guide...
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Installing Pi-hole on a Raspberry Pi
Pi-hole is a network-wide ad blocker that acts as a DNS sinkhole. It effectively blocks unwanted content like advertisements and trackers at the network level, making your browsing experience...