Now you can build your own room temperature monitor using an Arduino board. The circuit is a combination of an Arduino UNO board, LM35 temperature sensor, and a 16×2 Hitachi compatible LCD. It will ...

Arduino UNO R4 Minima – €18. Power, ... In terms of wireless connectivity, the UNO R4 WiFi’s built-in ESP32-S3 module allows makers to remotely monitor and control their projects.

CGA monitors may not be an amazing technological advance these days, but they can generally be found very cheaply. Additionally, they have a DB-9 connector and work off of TTL ranges (0-5VDC) makin… ...

Still, it's a handy project if you need to monitor and track the air quality in your home. Hit up the link below for the Arduino source code, a build guide, and all the details of the tests.

If you want to DIY solution to your energy consumption, here's how modders created a home energy monitor from an Arduino, some wiring, and a little custom code.

– Arduino Uno or similar such as the new Arduino 101 or Genuino – £28 or $40 (cheaper clones are available) – Arduino 16×2 LCD screen with keypad £2.50 or $3.60 – 15m of 3 core cable ...