This simple Arduino project aims to display constant values on the screen at specific intervals through the serial monitor without requiring user input. Every second, constant integer values are ...

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… ...

6 thoughts on “ Arduino Heart Rate Monitor ” Andrew says: September 25, 2011 at 11:25 am ooh pretty. Report comment. Reply. Anonymous says: September 25, 2011 at 11:29 am ...

The idea here is to use a cheap clock from IKEA, wire in a bunch of LEDs, connect and Arduino, and then use the 1Sheeld to trigger color changes depending on the traffic time between two points.

This Arduino sketch monitors the voltage output from a potentiometer connected to analog pin A0. It displays the voltage reading on the serial monitor and controls two LEDs based on the voltage level.

For more details and full instructions on how to create your very own wearable Arduino heart rate monitor jump over to the Hackster.io website via the link below. Source: Adafruit: Hackster.io.

If you have allergies than you've likely considered picking up an air quality sensor for you house at some point. However, a good air quality monitor will run you upwards of $290.

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.