Arduino 4-Channel Relay Module: Reverse a DC Motor | ShillehTek
Build a high-current Arduino DC motor reverser using a 4-channel relay module with safe interlock wiring, ideal for a...
Arduino Nano MQ-2: Build a Gas Leak Alarm | ShillehTek
Build an Arduino Nano MQ-2 gas and smoke alarm with a buzzer threshold alert, plus optional OLED readout and ESP32 Wi...
ESP32 LD2410 vs RCWL-0516: Pick the best sensor | ShillehTek
Compare ESP32 wiring and real-world behavior for LD2410 mmWave presence radar vs RCWL-0516 Doppler motion, so you cho...
Arduino MAX30102 vs MAX30100: Choose the best sensor | ShillehTek
Compare MAX30100 vs MAX30102 pulse oximeter modules for Arduino wearables, focusing on ADC, FIFO, and libraries so yo...
CP2102 USB-to-TTL: Flash ESP-01 and STM32 boards | ShillehTek
Flash an ESP8266 ESP-01 and STM32 Blue Pill over UART using a CP2102 USB-to-TTL adapter, with stable power wiring tip...
Arduino Nano DS3231 + TM1637: Drift-Free Alarm Clock | ShillehTek
Build an Arduino Nano clock with a DS3231 RTC and TM1637 display for a drift-free desktop alarm clock with temperatur...
Arduino Nano TTP223B: Hidden Touch Relay Switch | ShillehTek
Build a hidden touch switch using an Arduino Nano and TTP223B to toggle a relay through acrylic or wood, for clean en...
Arduino Nano RCWL-0516: Through-Wall Motion Detect | ShillehTek
Build an Arduino Nano motion detector using the RCWL-0516 microwave radar sensor to switch a relay, with reliable thr...
TP4056 18650: Build a USB-C 9000mAh Power Bank | ShillehTek
Build a repairable TP4056 USB-C 18650 power bank with a 3P pack and 5V boost output, saving money and letting you rep...
3S BMS 18650: Build a 12V Portable Power Box | ShillehTek
Build a 3S 18650 portable 12V battery box with a balanced BMS for safer charging and reliable field power for camping...
USB-C PD Trigger Board: Portable 5-20V Bench Supply | ShillehTek
Build a USB-C PD bench power supply with a PDSink trigger board and buck converter for adjustable 1.5–19V output usin...
Arduino Nano TCA9548A: Run 8 Identical I2C Devices | ShillehTek
Wire an Arduino Nano to a TCA9548A I2C multiplexer to run up to eight identical 0x3C OLEDs or sensors without address...