Hi
I'm setting up my first basic 1-wire net, currently involving a USB adapter and 3 Temp/Humidity devices.
My test setup worked fine with the 3 devices connected close together, ie. a 2M cable from the USB adapter to the first device, then 0.5M patch cables between devices.
Now I've placed them through the house though, I'm having issues seeing the devices at all. I can get some of the temperature sensors, but none of the humidity sensors. My guess is that the extra distance (~30M to the furthest device) means not enough power in parasitic mode.
I've ordered a hub, partly to act as a power injector, but it'll take a couple of weeks to arrive and I'm impatient
My question is, can I temporarily hook up a 12V battery or 15V DC power supply (I have a multi-voltage jobbie lying around) directly to pins 7 and 8 and power them that way until the hub arrives? Am I likely to blow anything up using this approach?
Thanks.
Luke in NZ.
I'm setting up my first basic 1-wire net, currently involving a USB adapter and 3 Temp/Humidity devices.
My test setup worked fine with the 3 devices connected close together, ie. a 2M cable from the USB adapter to the first device, then 0.5M patch cables between devices.
Now I've placed them through the house though, I'm having issues seeing the devices at all. I can get some of the temperature sensors, but none of the humidity sensors. My guess is that the extra distance (~30M to the furthest device) means not enough power in parasitic mode.
I've ordered a hub, partly to act as a power injector, but it'll take a couple of weeks to arrive and I'm impatient
My question is, can I temporarily hook up a 12V battery or 15V DC power supply (I have a multi-voltage jobbie lying around) directly to pins 7 and 8 and power them that way until the hub arrives? Am I likely to blow anything up using this approach?
Thanks.
Luke in NZ.