Hardware

stone's throw: permanent node

pondNODES

The Stone’s Throw POND nodes have been designed to support through-hole DIY production. The boards are fully compatible with the Arduino IDE and use Xbee Radios for communication. All digital I/O pins, and the analog pins 0-5 are accessible with adjacent ground and power (3.3V) connections. Analog pin 5 is restricted for signal strength measurement from the radio. The boards have a solderable jumper that can be used for wireless reprogramming (in development).

*** CAUTION ***

These boards DO NOT have on board regulators as they are being powered by 3.7V LiPo batteries. A version with 3.3V and 5.0V regulation is in development.

Schematics and Files:

I am using a toner transfer method to produce the boards. The masks are produced with Eagle Software and then ported to AI for tiling and printing.

masks

pond_Schematic_v001

DOWNLOAD masks and Eagle Files

Programming

The xBee radio must be removed to program program the microController. This is a serial line constraint, not a physical one. The cable below can be used to monitor communication once the radio is back in place. I am using FTDI to serial modules to upload code.

programming

System Testing

As electronics left laying around urban areas draw unwanted attention, I have been housing the radios in LED-garden lights available from most hardware stores for public testing.

pond_testNode_detail

Test nodes in-situ at the GOSH! summit. Banff Centre, Summer 2009.

pondTestNode_banff

PONDnode_mountain