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Link to video
Dymek Aug 27,2026
This project is licensed under the GPL v3 here, on my repo its cern-ohl-s-2, the difference is because pcbway does not offer cern-ohl-s.Replaces the RF can the NES uses to create power and video/audio on your front loader nes. Nintendo's design here is pretty crappy, First off because of heat the caps inside tend to cook themselves. Also it's not a very well designed circuit.Link to video is a minimal design that uses a usb c input to power the console. It adds protection that the original NES d...
9th Project Design Contest-Edge AI & IoT
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ESP32-S3-SIMPLE TestBoard
Frederiksen Aug 21,2026
Complete step-by-step PCB design process going through the schematic creation, layout, and routing of anESP32-S3-SIMPLE prototype Testboard. The main feautures for this board are:- ESP32-S3-WROOM Module - 8 MB flash- Button for RESET- User Button- User RGB LED- expansion header  - programming header    - Power LED on 3V railfor the mechanical side of things we will have:- 4 x 3.2mm mounting holes- Size 45x45mm- 4 layer board design
ESP32 IOT WiFi
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Mailbox Desk Notification Display
LazyTechGeek Aug 19,2026
This project is a miniature mailbox desk display designed to work with Home Assistant. When post arrives in your real mailbox, the miniature mailbox raises its flag and plays the classic “You’ve Got Mail” sound to let you know. Once your post has been collected, the flag automatically lowers again.The carrier PCB brings together a D1 Mini ESP8266, DFPlayer Mini, servo, speaker and reset button into a compact and easy-to-assemble design. Combined with the 3D-printed enclosure, it creates a fun ph...
9th Project Design Contest-Edge AI IoT 9th Project Design Contest-Edge AI & IoT
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Long-Range Appliance Control Using Arduino and RYLR999 LoRa
Jain Aug 17,2026
Controlling an appliance wirelessly is straightforward when Wi-Fi is available, but things become more interesting when the device is located outside the coverage of your local network.In this project, I built a long-range appliance control system using two Arduino Nano boards and Reyax RYLR999 modules. The system uses Bluetooth Low Energy (BLE) for communication with a smartphone and LoRa for the long-distance wireless link.The smartphone sends a simple command to the controller node through BL...
Arduino DIY IoT
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CLOTHO_rev1.0
Aug 15,2026
Clotho is a modular IoT PCB platform for temperature and Modbus sensor acquisition. The board includes ESP32-based control, RS485/Modbus interface, microSD storage, LoRa communication, isolated power sections, and protection components for industrial sensor wiring. This revision is intended for prototype validation and functional testing.
IoT ESP32 Modbus RS485 Sensors Industrial KiCad
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CLOTHO_rev1.0
Aug 15,2026
Clotho is a modular IoT PCB platform for temperature and Modbus sensor acquisition. The board includes ESP32-based control, RS485/Modbus interface, microSD storage, LoRa communication, isolated power sections, and protection components for industrial sensor wiring. This revision is intended for prototype validation and functional testing.
IoT ESP32 Modbus RS485 Sensors Industrial KiCad
113
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ESP32-S3-MINI TestBoard
Frederiksen Aug 01,2026
ESP32-S3-MINI Testboard:Size : 40x40mm4-layer designIncludes:ESP32-S3-MINI WiFi moduleHDC3022 Temperature and Humidity sensor on I2C busUSB-C poweredBOOT+RESET SwitchesUSER SwitchRGB LEDPower LED (Green)QWIIC connector (I2C-bus)2x5 pin SPI expansion port,4 x 3.2mm mounting holesProgramming interface port - ESP-PROG compatible
ESP32 IOT WiFi
433
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FM stereodecoder for Radiotehnika T101 tuners
Sparrow Jul 27,2026
FM stereodecoder for Radiotehnika T101 tuners.When replacing the stereo decoder, all tuner functions are completely preserved.
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FM stereodecoder board (best fit for Radiotehnika T101/T7111 tuners)
Burenkovs Jul 26,2026
Direct replacement for SD-A-7 (СД-А-7) module to use stereo decoding with pilot tone in old USSR FM tuners like Radiotehnika T-101, T-7111 and similar. For direct replacement original connector should be used (old one or new).This board can be used as decoder in any other FM analog radio projects, as decoding IC is in standard configuration.After assembling and installation require to adjust threshold by trimmer for stable stereo mode.About parts used.Pads H1...H10 designed so they could fit to ...
FM Radio
271
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Radar System
Visaakan J Jul 25,2026
# ESP8266 Radar System - Complete Documentation---## 1. Project OverviewThis is an ESP8266-based Radar System that uses an ultrasonic sensor (HC-SR04) to detect objects and display them on a real-time radar visualization. The system features a servo motor for 180-degree scanning, a web-based radar display, Telegram notifications, and local buzzer/LED alerts.---## 2. FeaturesReal-time radar display accessible via web browser with 180-degree scanning capability. Object detection from 2cm to 400cm ...
ESP8266 IOT Ultrasonic
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