Zolertia z1

getting the Z1's running 6lowPan was very fast (for a quick start use instant contiki)

using the z1-websense demo

and browse the node directly

Radio

radio range with external antenna is quoted as 180m with 5 db antennas.

if we want to link our long stretches with these we will need to evaluate grid/panel antannas

ideally we will use the thingsquare CC1120 contiki code and link to the COTS CC1120 pcbs via our interface card.

Q: do we cut power to the onboard CC2420 chip in case its disabled current is too high?

probably need a 3.3V supply on our add-on board and a 5V PSU for sensors

Sleep current for a z1 on its own with contiki needs measuring (then with our add-on board) to determine the lifetimes

PSU: 3.3V ok? from lead acid

Sensor interface - analogue + power/GND

Digital sensor interfaces - RS485, RS232 option, I2C

most sensors have an avr over rs485

we have about 7 spare ADC inputs - which seems OK for each node's max

TC - RTC if we need better timing accuracy (need to check what is used/usable in Contiki)

Not all the pins presented on the headers are available for external use. The following pins are used for functions internal to the Z1

MSP430 Port#	Pin Name	Pin#	Notes
P6.0	ADC 0	15	Weird potential divider on the board gives odd readings
P6.7	ADC 7	6	Odd internal pulling
P1.6	P1.6/TA1	52	Accel interrupt
P1.7	P1.7/TA2	50	Accel Interrupt
P2.4	P2.4/CA1/TA2	45	1 Wire
P3.5	UART0.RX	35	USB serial
P3.4	UART1.TX	37	USB serial