Velleman kit K8055RS USB experiment interface board kit
New USB 2.0 compatible printed circuit board kit with components for solder assembly.
Build this project to interface your computers USB to hardware I/O with the following features
5 digital inputs(0=ground, 1=open) (on board test buttons provided) 2 analog inputs with attenuation and amplification options  (internal test +5V provided) 8 digital open collector output switches (Max 50V/100mA) (on board LED indication) 2 analog outputs:
0 to 5V, output resistance 1K5
PWM 0 to 100% open collector outputs max 100mA / 40V (on board LED indication) general conversion time: 20ms per command power supply through USB approx 70mA software available on website dimensions 5.7 x 3 x 0.8" / 145 x 88 x 20mm
Total solder points: 159 level of difficulty 4/5
made in Europe