I found a little heart rate sensor @ ICstation. It is a clone of the open hardware pulse sensor. The sensor is well documented, and it comes with Arduino and Processing example code. To try it out I connected the sensor to an ATmega328 running at 3.3V and loaded the example Arduino code. I could […]
The Maxim MAX7219 IC is a serially interfaced 8 digit LED display driver. So it’s the ideal chip to drive an 8×8 led matrix. I got interested in these chips when I saw that lots of Chinese electronics shops were selling small MAX7219 led matrix modules. The weird thing is that the MAX7219 IC is […]
September of last year I backed the Pixy CMUcam5 project on kickstarter. Back then the people behind the project (Charmed labs) promised a November delivery date. With over 2000 people backing the project things turned out a bit differently. I only received my Pixy last week. I also had the bad luck that the package […]