I need to send a single pulse wirelessly to activate a hacked pushbutton. The transmitter is not a concern, I can put an Arduino there easily, but the receiver needs to be tiny and very low power. I don’t want to put a micro controller on the receiver side, so all I need is a receiver that can send a pulse to activate a transistor or relay when it gets the command signal.
I know I can do this with a S2 xBee easily, but the size and power consumption are higher than I want. Are there any alternatives?
Range is maybe 30 feet, indoors (through a couple of walls).
The flip side of the size issue is that I can’t really work with SMD devices - don’t really know how to solder them. So I’d prefer either PTH comatible packages, or breakout boards.
Hmm, the Linx SMD chips above don’t look too tough to solder, thanks to the castellations. Looks like a ES pair, coupled with a few Splatch antennae will work well.
Am I correct in assuming that if I just take the data line high on the Tx and hold it there for second or so, the data line on the Rx will just go high for roughly the same time? So no need for uC on either end, just a button on the Tx to take data (and Pdn) high?
jgalak:
Am I correct in assuming that if I just take the data line high on the Tx and hold it there for second or so, the data line on the Rx will just go high for roughly the same time? So no need for uC on either end, just a button on the Tx to take data (and Pdn) high?
Yes, you can use it that way. Basically the Rx data pin tracks the state of the Tx data pin.
Cool, I think I’ll order a pair to play with. Too bad I need to actually burn PCBs, the ds says to avoid breadboards and such. Probably start another thread as the questions start to pile up once I’m designing the circuit
