nisha jain wrote:
Hi All,
For example if we need to check the
weather conditions for exapmle -- pressure and temp. Can sensors be equiped with single mote and sampled? I don't know how many A/D converters are present? If there are multiple can we use event handlers to collect the data?
Sure, that's what T2 is good for -- many sensors used at once without stomping on each other's code. There are 8 A2D's available on telosb. I've just tested a sensor board that muxes 6 of them and uses two A2D slots as DAC instead to have 12 A2D's. All on a telos add-on platform called ecosens1. I'll be making motherboards based on that soon too that do not add onto a telosb board, but give you a low cost expansion connector for flat flex cable. That lets you plug an add-on sensorboard with few mounting and space constraints (flat flex cable), plus low cost. When I make the ecosens1 MSP430F1611 motherboard from scratch, it will have two or three 20 conductor FFC connectors (they cost 0.25 each in volume) so every imaginable add-on can be done. For your temperature wants, I have a customer buying development of Dallas one wire interface code in tinyOS that will let you use those thermometers -- almost as many as you want: up to 50 per node. And nice solar power supplies too. John Griessen -- Ecosensory Austin TX tinyOS devel on: ubuntu Linux; tinyOS v2.0.2; telosb ecosens1 _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
