@Jon - still confused about costs and your demo. It seems you needed two systems for demo, one to send, the other to receive. each system consisted of four boards. therefore, the cost of each system would be $150?
Sorry for the confusion. The $300 kit includes two MCU cards, two wireless PICtail cards, two LCD cards, and two serial-port cards. Also, 2 USB cables, and 2 RS-232 cables. You don't need anything else. If you want to add additional nodes to a network, you could but an extra PIC18 Wireless Development Board and an extra MRF24J40 PICtail for each extra node. I assume any extra nodes would not need an LCD or a serial card. MRF24J40 PICtail card, $US 25. I could not quickly find the "8-bit Wireless Development Board" so contact the company for a price on this board.
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