Complete guide to building a precision digital micro ampere meter using STM32. Measures nA to mA with OLED display. Includes circuit, PCB files, firmware & 3D enclosure. DIY ampere meter DC digital.
Read more »STM32 Precision Digital Micro Current Meter - Complete Build
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Category: Microcontrollers Tags:
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Interfacing SD Card Module with Raspberry Pi Pico Guide
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Learn to interface SD card module with Raspberry Pi Pico using SPI. Complete wiring guide, Arduino code, FAT32 setup, file operations & troubleshooting included.
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Dual Axis Solar Tracker System Using Arduino
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Build a dual axis solar tracker system using Arduino, LDR sensors & servo motors. Increase solar panel efficiency by 30-40%. Complete circuit diagram & code included.
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Build an ESP32 Text to Speech Offline System
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Build an ESP32 text to speech offline converter with Talkie TTS library. Step-by-step tutorial includes circuit connections, code examples, and troubleshooting.
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Build a Compact and Portable DIY Bluetooth Speaker Amplifier
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DIY Bluetooth Speaker using the JDY-62 module and PAM8403 amplifier for clear, wireless audio. This simple project covers components, pinouts, wiring, and circuit setup, making it perfect for beginners learning basic electronics while creating their own portable speaker.
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Build a Smart Traffic Management System Using IoT
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Learn how to create an ESP32-powered Smart traffic management system using IoT that uses IR sensors for real-time vehicle detection, enables adaptive signal control, and provides a live web dashboard for monitoring traffic flow.
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Raspberry Pi Wi-Fi Router Using RaspAP Setup Tutorial
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Learn how to build a high-performance Raspberry Pi Wi-Fi router using RaspAP. Easy setup, clean dashboard, VPN support, and practical tips to get faster, cleaner browsing on all your devices.
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How to Install Windows 11 on Raspberry Pi Devices
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Learn how to install Windows 11 on Raspberry Pi 4 and Pi 5. Step-by-step tutorial with WoR setup, UEFI configuration, and performance tips for 2025.
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ESP32 Offline Voice Recognition Using Edge Impulse
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Build an ESP32 speech recognition offline system with Edge Impulse. Create your own ESP32 voice assistant using an INMP441 microphone for hands-free control.
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Build an Esp32 Cam Telegram Bot for Wireless Image Capture
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Build an ESP32 CAM Telegram bot for remote monitoring. This Telegram camera bot project covers image capture, video recording, and IoT surveillance setup.
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DIY Meshtastic Using ESP32 : Build Your Own Private Off-Grid Network
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Build a diy Meshtastic node using Meshtastic ESP32 and LoRa devices for secure, long-range, encrypted mesh messaging, perfect for off-grid communication.
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Build a Smart ESP32 GPS Tracker with SIM800L and NEO6M Module
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Build a real-time ESP32 GPS Tracker with SIM800L & NEO-6M Module. Track vehicles, assets via GSM with this complete DIY IoT project featuring code, circuit diagram & testing guide.
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Clocked JK Flip Flop: Working, Truth Table, and Circuit Design Guide
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Learn how clocked JK flip-flops work with truth tables, timing diagrams, and circuit designs. Understand toggle, set, and reset operations for digital logic applications.
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DIY UWB Indoor Positioning System using ESP32 and Qorvo DWM3000
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Build a DIY USW indoor positioning system using ESP32 with the Qorvo DWM3000. This tutorial walks you through hardware, firmware, and Python visualisation to create accurate tracking for robotics and IoT projects.
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Wearable Air Quality Monitor Pendant using STM32 and SGP40 Sensor
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Build a smart wearable pendant that tracks air quality with STM32 and SGP40 sensors, alerting users through LEDs and buzzer notifications for real-time environmental awareness.
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Wireless ESP32-Based Stepper Motor Driver with TMC2240
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Learn how to build a wireless stepper motor controller using an ESP32-S3 and TMC2240 driver. This detailed tutorial guides you through wiring, custom PCB design, USB-C PD power management, closed-loop control with an AS5600 encoder, and a browser-based UI with real-time status and RGB feedback. Includes Gerbers, BOM, and full source code.
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Interfacing ESP32 with Thermal Printer using UART ESC/POS
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Technical guide to interfacing ESP32 with thermal printers (PNP-500/RS203) over UART. Explains hardware wiring, power considerations, and implementation of ESC/POS commands for printing text, images, barcodes, and QR codes. Includes detailed circuit diagrams and Arduino code on GitHub.
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Boot Raspberry Pi from USB without SD Card Required
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This hands-on tutorial explains how to ditch unreliable SD cards and boot your Raspberry Pi models 3B, 3B+, 4, and 5 directly from USB or NVMe. It covers setting up USB-boot for each model—from enabling OTP on Pi 3B to updating EEPROM on Pi 4 and using native USB/PCIe boot on Pi 5, boosting speed, reliability, and convenience.
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Build a Cellular GPS Tracker with Raspberry Pi Pico SIM800L
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This step-by-step tutorial walks you through creating a real-time GPS tracker using the budget-friendly Raspberry Pi Pico microcontroller, Neo 6M GPS receiver, and SIM800L GSM module. Learn circuit wiring, Arduino IDE setup, GeoLinker cloud integration, and offline buffering to ensure reliable IoT tracking anywhere.
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Understanding SR Latches: Set-Reset Latch, Gated & Clocked Versions
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Learn the basics of the SR latch, Set-Reset memory circuit, in digital electronics. This tutorial covers truth table, NOR/NAND implementations, gated and clocked variants, and working principles.
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