Content for 2N3904

Arduino Pwm Solar Charge Controller ( V 2.02)

“If you are planning to install an off-grid solar system with a battery bank, youll need a Solar Charge Controller. It is a device that is placed between the Solar Panel and the Battery Bank to control the amount of …

Arduino Footswitch (control Your Guitar Amp With Arduino)

“So, you play music live, and you use metronome or click-tracks to synchronize your band. What if I told you that you can use that click-track to tell your amp to switch between channel by itself, in the exact time …

AVR High Voltage Programmer 2

“AVR-HV2 is Arduino based high voltage parallel programmer for AVR microcontrollers. This programmer can read, write, and erase both flash memory and EEPROM. Also, this can use to set fuse bits of AVR MCUs. AVR-HV2 programmer is designed …

DIY UV Light Box Controller For SLA 3D Prints

“Just add your own enclosure, 12V adapter and UV LED strip! Make your own budget UV light box with built in adjustable timer and intensity. Easy to use UI displayed on cheap commonly available OLED screens (compatible with ssd1306, ssd1309 …

Bottle Binary Clock

“In this Instructable, I’d like to show how to make a simple Bottle Binary Clock. This binary clock can read time information from an NTP server and clock will be updated over WIFI. Time will be shown by RGB …

Gamepad decoder DTMF

“Thanks to the MT8870 chip, connecting the outputs of STQ, Q4, Q3, Q2 and Q1 to a transistor allowing to open or close the buttons of a GAMEPAD, DTMF tones can be decoded. We only ineed 5 pins (control buttons …

NeoPixel Mini Cube

“This mini cube is made up of six 4x4 WS2812B panels giving a total of 96 individually addressable RGB LEDs. This mini cube is made up of six 4x4 WS2812B panels giving a total of 96 individually addressable RGB LEDs …

Tiny Reflow Controller with character LCD

“Reflow ovens are an important part of the development of PCB for electronic products when using surface mount components. They provide a route through which PCBs can be quickly populated with SMD components, however, for accurate results, the heat across …

ESP32-CAM PIR Motion Detector with Photo Capture

“In this project, we’re going to make a motion sensor detector with photo capture using an ESP32-CAM. When your PIR sensor detects motion, it wakes up, takes a photo and saves it in the microSD card. This project …

Easy to Build FM Transmitter

“Learn to build your own mini FM transmitter. This fun project will show you how to build a mini broadcasting device that can transmit an audio signal up to a quarter mile to any FM receiver. It’s easy to …