Recent content by nachbar

Thanks. Perhaps I just don't have it exposed to enough light, which is why I am getting a zero. I will have to try it outdoors in the Arizona sun when I get a chance and see what happens. In the meantime, I will use it for temp and humidity.

In thinking about this some more (and again, I am planning for my own installation) I think that, if I did not use the optoisolator, I would put a 100,000 ohm (100K) resistor between the ground of the HVAC monitor and each of the grounds of the 24 volt control circuits. That should have...

I would try the Clare solid state relays, on page 130 of the Jameco catalog. They take about 5 mA of current through the built-in LED. You can just use a resistor to get the required current from whatever voltage you have as input. About $4 for a two-relay chip. You can get the full spec...

Thanks for your quick reply. The hobbyboards.com site does have the schematic, so I had seen the electrical connections. However, I have not been able to get a reading from OWFS that varies with the light that the unit is exposed to. I was hoping, since OWFS is so prevalent, that someone who...

I just received one of the HVAC monitors yesterday. They have a common ground for the four input circuits, and the ground connects to the one-wire ground. There is also a connector for the optional +5 volts DC for the one-wire system, and a connector for the one-wire data line. In addition...

I have seen this question several times in the forum, without a clear answer. I just received a Humidity/Temp/Solar sensor. I have been using a 1-wire network with three HobbyBoards hubs for the better part of a year, using owfs on a Linux server, with temploggerd tracking my temperatures...