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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Running Grafana on the Raspberry Pi
Grafana is a powerful open-source platform for monitoring and visualizing data. Running Grafana on a Raspberry Pi enables you to create dashboards for various metrics, from system monitoring to IoT...
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Using the BTS7960 with the Raspberry Pi
The BTS7960 motor driver is a powerful H-bridge module capable of handling high currents, making it ideal for controlling DC motors in robotics and automation projects. In this tutorial, you’ll...
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Installing Docker on a Raspberry Pi
Docker is a lightweight containerization platform that allows you to run and manage applications in isolated environments. Installing Docker on a Raspberry Pi enables you to use this powerful tool...
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Using the TCS34725 with the Arduino
The TCS34725 is a color sensor capable of detecting the intensity of red, green, blue, and clear light. It is widely used in color detection projects, including robotics, home automation,...
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Measuring Voltage with the Arduino
The Arduino is a versatile microcontroller capable of measuring voltage using its built-in analog-to-digital converter (ADC). This capability is essential for applications like monitoring battery levels, sensing input signals, and...
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How to Use the DS1307 RTC with the Arduino
The DS1307 Real-Time Clock (RTC) is a widely used module for keeping time in Arduino projects. It maintains accurate time even when the Arduino is powered off, thanks to its...
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Creating a Clock with the Arduino, a 0.91" OLED, and the DS1307 RTC
Building a clock with an Arduino, an OLED display, and the DS1307 Real-Time Clock (RTC) module is a fun and practical project. The DS1307 RTC module keeps accurate time even...
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Detecting Objects with the ESP32-CAM and Python
The ESP32-CAM is a versatile, low-cost microcontroller with a built-in camera, capable of capturing images and streaming video. When combined with Python’s powerful image processing libraries, you can implement object...
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Using a 0.96" OLED with the Arduino
The 0.96" OLED display is a compact, energy-efficient screen that is perfect for displaying text, graphics, and sensor data in Arduino projects. This tutorial will guide you through setting up...
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Measuring Current with the Arduino
Measuring current in electronic circuits is a common requirement for projects involving sensors, motors, LEDs, and other components. While Arduino cannot directly measure current, you can use external components like...
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Reading and Writing Chips with the CH340 USB EEPROM Programmer
The CH340 USB EEPROM programmer is an affordable and versatile tool for reading and writing data to EEPROM chips. It supports a variety of EEPROM types and is commonly used...
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JTAG: Writing Chips with Joint Test Action Group Protocol
JTAG (Joint Test Action Group) is not only used for reading memory and debugging hardware but also for writing data to chips. This includes flashing firmware, programming memory, and configuring...
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JTAG: Reading Chips with Joint Test Action Group Protocol
JTAG (Joint Test Action Group) is a widely used protocol for debugging, programming, and testing integrated circuits (ICs). It allows direct communication with a chip to read its memory, perform...