12
May
May
Fix one end of the 5kg bar load cell to the base plate, hang the platform on the other, and the HX711 turns that tiny flex into grams on your Arduino — mounting, wiring, calibration and full code.
Author Archives: Kelvin Wong
07
May
May
Uno for 5V offline builds, ESP8266 for cheap WiFi, ESP32 for Bluetooth and heavier IoT — an honest spec table, a buying guide by project type, and the traps that catch people switching boards.
04
May
May
Build a battery-backed digital clock with an Arduino Uno, DS3231 RTC and LCD1602 I2C display — three components, four wires each, and one sketch.
02
May
May
Build an automatic plant watering system with an Arduino Uno: capacitive soil moisture sensor, relay and 5V submersible pump — wiring, calibration and safe code.