Hello all,
I found a little confusion with 1-wire sensors and Labjack.
If you use a lighning counter from hobby board, it already has a counter included and so, if you connect the output of that counter to the input CNT counter on Labjack, it can not work except if you bypass the counter on the hobby-board lightning counter.(this has been documented on this forum and I agree),;like that, you only count once.
Now how to connect the hobby-board lighning counter (without modification) and a solar sensor and humidity sensors, all of them 1-wire sensors from hobby-board (and already converted in digital) to WD? I know you can connect all those 1-wire sensors on the same wire. But where will go that wire? I guess you’ll need an interface for reading and writing 1-Wire devices.( http://www.aagelectronica.com/aag/index.html?target=p_11.html&lang=en-us ).
Labjack is not usefull at all with 1-Wire devices, isn’t it?
Thanks for help.
I didn’t buy Labjack and hobby-boards yet because of the confusion in my mind. :?:
Hi
to get the 1 wire devices read by WD, you need the Dallas 1 wire serial (or comport) adaptor.
The 2 wires needed for the 1 wire are then connected to that (i.e a power (data) wire and a return wire).
yes, the lightning counter can be changed to be read via the labjack counter…i have it working here…re the mod posted on this forum…nd others have it working…it works great.
the labjck does have its own temperature sensors which you can purchase…but i need to add in an averaging routine, as the data jumps around a bit
you can use some other dallas 1 wire with the labjack input voltage, like a solar sensor, but otherwise a dallas 1 wire temperature sensor you cant use (well i dont think so anyway!)
Thanks Brian,
I agree with your post except this sentence: “you can use some other dallas 1 wire with the labjack input voltage, like a solar sensor”. The solar sensor from hobby_board which is giving data output already converted to digital. You need some kind of interface between those 1-Wire device and Labjack digital input. I asume you think about connected the solar sensor directly on one of the digital inputs. I’ll post a message in the Labjack forum to have a little more info from them.
Thanks and I’ll let you know. 
For the solar sensor you would take the solar kit voltage from a point just before its dallas a to d ic and feed it into one of the labjack analog inputs…
for temperature sensors Brian, I use cheap LM335 ics with a 1k5 pullup resistor to +5V for each… work brilliantly and only cost about $2 each, can use long 2wire cable runs too without problems
Hello, here is the answer I got from one member of the Labjack forum:
http://www.labjack.com/forums/index.php?showtopic=480&hl=