Computing stuff tied to the physical world

Experimentation setup

In AVR, Hardware on Oct 11, 2009 at 00:01

After coming up with the JeeBoard, which needs a PCB with at least an I/O expander and two LEDs/switches, I decided to go one step simpler and just wire up a version with no active components at all:


It connects the same 3.6 .. 4.5 V battery pack through a slide switch, and ties a breadboard to the AIO + DIO pins of ports 1 .. 3, along with +3V and GND. With a few headers placed flat on the board for various plugs.

Wiring this up is simple – note the added rubber feet:


Now it’s ready to go, with 3 rechargable NiMH’s:


And here’s the final setup:


Just to show how you can go nuts with plugs:


The battery pack connection is removable to give me a nice spot to insert a current-measuring multimeter.

First demo of this board coming up tomorrow…