October 2025. A maker uploaded a video to YouTube. The title was "Build an ESP32 RC Submarine with FPV Camera". Just $117. An ESP32 microcontroller and a 3D printer. An acrylic pipe and a syringe. By ...

Description: $2 for pcb Prototype, for more information visit: Download the codes here Arduino simple shield potentiometer code: Arduino shield rc car: Arduino nano module L298P code: Board project: ...

This device could literally save your life. When you're in remote locations—hiking in mountains, camping in forests, exploring deserts, or working in rural areas—cell phone service often disappears, ...

AprilTag is a visual fiducial system popular in robotics research. This repository contains an adaption of the original AprilTag 3.0 library to use as an Arduino library for ESP32 boards (ideally ...

Arduino RFID technology works by using electromagnetic waves in the radio frequency spectrum for wireless communication and data transfer between RFID tags and readers. From supermarket anti-theft ...

It has now been over 12 years since I built the Elektor DSP radio which used the Si4735 chip from Silicon Labs (now Skyworks). This was the first time an FM radio was built using a DSP circuit to ...

平时做研发手工焊接1-2块板还好，如果做一些小批量的样品就比较尴尬，虽然有捷配、嘉立创可以提供SMT的服务，但如果能够在自己的实验室里随时自己组装自然会更方便，如果真有一台体积小、价格不高，能够满足日常研发小批量加工的贴片设备，那真是工程 ...

The OV7670 camera module with Arduino programming has always dominated the electronics industry, as it has lots of applications, such as visitor monitoring systems, surveillance systems, attendance ...

I own some frequency counters and signal generators, but when measuring one with another they do not show the same frequency on their display. The do not seem to be very accurate, all of them have ...