Power Supply (x1): 5V–12V DC adapter for powering the Arduino, or in my case, we use 2S Lithium-ion battery connecting to Vin pin. Below you can see the circuit diagram used in the ... starting from ...

Simple safety pins from copper wire - A little change you have got a new pattern - How to make jewelry from copper wire by Lan Anh Handmade There are many ways to make safety pins. Only need to change ...

An Arduino Uno (CH340G clone) reads temperature and humidity from a DHT11 sensor and computes 10+ environmental metrics (heat index, dew point, enthalpy, humidex, vapor pressures, etc.), outputting ...