Yeah, I do that. I think it's an electrical problem:
The motes are connected with USB cables to USB hubs, which are connected with each other, to the power and to the computer If I order one node to give the maximum output and there are 2 nodes connected, each gives 1/2 of the maximum output, if there are 3, each 1/3, etc... Would a voltage follower between the the mote and the inverter solve the problem? Is there a simpler solution? Of course having the motes isolated from each other and receiving radio commands would solve the problem, but I need to keep the USB connection, since at a later stage the motes should be sending measurements to the computer continuously... Thanks again... On Thu, 2006-07-06 at 09:32 -0700, Dongyan Chen wrote: > When you program your motes, have you programmed them with different > node ids like > > make tmote reinstall,NODE_ID? > > - Dongyan > > On 7/6/06, Jose L. Ponce <[EMAIL PROTECTED]> wrote: > > Hello all, > > > > My question is very simple: I have 5 motes with the same program > > installed. This program receives an instruction from the computer and > > executes it (i.e. "dac output to 2 volts"). > > > > I am sending the instruction using moteif.send(MOTEID, message), so > > theoretically just the mote MOTEID should receive the message. This is > > not the case, though, and all motes seem to receive the message and > > execute it. > > > > And what's more strange: if I have two motes and I send "set dac to > > 0xffff" (which should be the maximum, 3 volts) both motes receive the > > message and each of them has an output of 1.5 volts!! > > > > The nodes are connected to the computer through USB and communication is > > made using this means, not radio. > > > > The DAC outputs are connected to an inverter amplifier and this > > amplifier is connected to a DC-Controlled Dimmer. Could the problem be > > related to impedances??? > > > > Any thoughts on what could be causing this anomaly and how to solve it? > > > > Thanks, > > > > - Jose. > > > > > > _______________________________________________ > > Tinyos-help mailing list > > Tinyos-help@Millennium.Berkeley.EDU > > https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > > > _______________________________________________ Tinyos-help mailing list Tinyos-help@Millennium.Berkeley.EDU https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
