Arduino DS3231 RTC: OLED Alarm Clock with Buzzer | ShillehTek
Build an Arduino DS3231 RTC alarm clock with an SSD1306 OLED and buzzer for accurate, battery-backed timekeeping and ...
ESP32 vs ESP8266: Pick the Best Board for 2026 | ShillehTek
Compare ESP32 vs ESP8266 in 2026 to pick the right Wi-Fi microcontroller board based on GPIO, Bluetooth, ADC, cost, a...
Arduino Nano HM-10 BLE: Control from iPhone | ShillehTek
Build an iPhone-controlled Arduino Nano project using the HM-10 BLE module to send simple commands that toggle output...
Arduino MAX7219 Dot Matrix: Scrolling LED Marquee | ShillehTek
Build an Arduino MAX7219 dot matrix scrolling LED marquee for readable signs and status messages using only 3 control...
Arduino Nano RC522 RFID: Smart Door Lock with OLED | ShillehTek
Build an Arduino Nano RC522 RFID smart door lock with an OLED status screen and servo latch action, using simple wiri...
Arduino Nano DS18B20: Build a Sous-Vide Controller | ShillehTek
Build an Arduino Nano DS18B20 sous-vide controller with a relay to hold a water bath near your setpoint for consisten...
Arduino IR Obstacle Sensor: Blink LED on Detect | ShillehTek
Build an Arduino IR obstacle sensor trigger that blinks the onboard LED and prints Serial alerts using a simple HIGH/...
Arduino 24MHz Logic Analyzer: Decode I2C SPI UART | ShillehTek
Capture and decode Arduino I2C traffic with a 24MHz USB logic analyzer in PulseView, so you can verify SPI, UART, and...
Arduino PCF8574: Add 8 GPIO Pins Over I2C | ShillehTek
Build an Arduino PCF8574 I2C GPIO expander project to drive 8 LEDs using only SDA and SCL, freeing pins for bigger bu...
Arduino Pro Mini CP2102: Flash and read serial | ShillehTek
Flash an Arduino Pro Mini with a CP2102 USB-to-TTL adapter, then read Serial output for fast debugging on USB-less bo...
Arduino TXS0108E: Safe 3.3V to 5V Level Shifting | ShillehTek
Build a safe 3.3 V to 5 V interface using an Arduino and the TXS0108E 8-channel level shifter, protecting 3.3 V devic...
Arduino MAX3421E USB Host Shield: Read USB Barcodes | ShillehTek
Build an Arduino MAX3421E USB Host Shield project that reads a USB HID barcode scanner and prints each scan to Serial...