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Bare Femto Development Board
Real Space Pro Mar 24,2026
I was thinking to myself....."what if I could have a cheap, tiny microcontroller that was open source?"And That's When it Struck me, The CH32V003 Series!These Boards Need Nothing But A Power Capacitor!So I studied them THOROUGHLY and Came Up with this design!it has 17 GPIO pins!and is only 7mm by 7mm !note: needs a WCH link E for programing through the swio pin
DIY Arduino
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Pinball RPU V102 project
Zorbas Mar 22,2026
Retro Pin Upgrade (RPU) is an inexpensive circuit board (DIY for under $50) that plugs into a pinball machine’s main board (MPU) and takes control. Using an Arduino microcontroller, RPU takes over the lamps, solenoids, switches, displays, and sounds of a pinball machine in order to reprogram it with all new rules. RPU can also talk to newer peripherals (like displays, RGB lamps, and polyphonic sound boards like the WAV trigger) so new features can be added to pinball machines.More info can be fo...
pinball RPU Arduino Retro Pin Upgrade V102
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RF Filter 868 MHZ Lora meshtastic / Meshcore
FERRARI Mar 15,2026
Filter for Lora ApplicationWarning, shield RF is not include ito the bom. I make my shield myself. You can use CU metal sheet for make yourselfComponents type SMD 402 (1005) Value:C1 ; C2: 1.8pFC3 ; C4: 3.3pFL1 ; L4: 12nHL2 ; L3: 8,2nH
Radio IOT Arduino
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Holi Circuit
Jiwarajka Mar 15,2026
The Holi Circuit represents a clever fusion of traditional festive play and modern mechatronics, transforming a manual water balloon drop into an automated, sensor-driven prank. By utilizing the ESP32 as the central processing unit, the system gains a significant advantage in terms of speed and multitasking. Unlike simpler microcontrollers, the ESP32 can manage the high-frequency pulsing required for ultrasonic distance sensing while simultaneously maintaining a stable PWM (Pulse Width Modulatio...
Arduino ESP8266 DIY
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AQI Detector
Jiwarajka Mar 15,2026
The integration of the Raspberry Pi RP2040 with the GP2Y1010AU0F optical dust sensor on a custom PCB creates a sophisticated edge-computing platform for environmental monitoring that bridges the gap between raw analog sensing and intelligent data interpretation. At the core of this system, the RP2040 utilizes its dual-core ARM Cortex-M0+ architecture to provide a level of computational fluidity rarely seen in simple air quality monitors. While one core can be dedicated to the nanosecond-precise ...
Arduino ESP8266 DIY
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USBpwrME..
Elektronikdesign Mar 13,2026
Many times i use USB to power my homebuilt projects and every time i have annoying issues on how to power the DUT in a prectical way during test and develppment. I want to use my bench power supply as power source to have controll of the power into my board so mostly i ended up cutting a USB wire to connect to the power supply.So finally i designed this adaptor to make the connections really easy and universal with some rally important safety features such OVP and polarity protection.Project fil...
DIY USB Power supply
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PWM MOSFET Driver Board for DC Loads and Arduino/Microcontroller Control PCB
Mar 13,2026
In short, this project makes a very common breadboard circuit into a reusable development tool: compact, easy to understand, easy to assemble, and useful in many small electronics projects.This project is a compact PWM MOSFET driver board for switching low-voltage DC loads from Arduino and other 3.3V/5V microcontrollers. It is designed as a simple, reusable helper board for electronics prototyping, testing, and workshop use. Instead of repeatedly wiring the same MOSFET, resistors, diode, LEDs, a...
Arduino DIY LED
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Wolf Microcontroller
Jiwarajka Mar 12,2026
The Wolf Microcontroller represents a significant leap forward for the modern DIY electronics enthusiast, merging the high-performance capabilities of the RPI (Raspberry Pi) ecosystem with a rugged, user-friendly design. At its core lies the RP2040, a powerful dual-core Arm Cortex-M0+ processor capable of running at 133MHz. This architecture is a "wolf in sheep's clothing," providing far more computational power than a traditional Arduino while maintaining a small, embeddable footprint. With 264...
Arduino ESP32 Raspberry Pi
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Ultimate 2-Player Reaction Timer with WS2812B LED Strips & Arduino
Pavleski Mar 12,2026
 Arcade reaction game is a genre of play designed to test a player's physical response time and hand-eye coordination against increasingly difficult visual or auditory cues. These games are usually dead simple (a single button, a joystick, or a touch screen), and anyone can play immediately, but mastering the timing is the real challenge. This time I will present you with a way to make such a game using an Arduino microcontroller and a WS2812B type LED Strip. This game is designed for ...
Arduino ESP8266 USB
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Gerber_SI-share
Маслов Mar 10,2026
mini rele mini rele mini rele mini rele
Arduino
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