Goodness, lots of new posts! I’ve been so busy, I apologize for being absent.
BTW Kev, I have the name numbers showing up on power up on my WR-25 it uses the standard TWI Wind sensor.
Thank you WX4, yes, Dale assisted me with the version codes a while back. The massive challenge now is I need to locate a TWI wind sensor assembly. The other issue is I do not have the outdoor humidity/temp circuit board (or the TWI pagoda to house it). I need to either build a circuit board, (which I would need a full schematic for) or find an existing one. Problem with a schematic being drawn, as you and Dale have mentioned, is the opaque circuit board sealant they used to waterproof. If that could be peeled off, it could eaily be reverse-engineered and a schematic made. Not having seen one, I don’t know how easy it would be to remove the sealant. If you’re lucky it may just lift right off in one sheet.
I did order the humidity sensor and the temperature sensing diode. I have them sitting here still sealed in the boxes. The replacement Honeywell humidity sensor has been confirmed as compatible by member looney2ns, but is unusable I am guessing unless I can find a board as I mentioned. The temp diode I will be able to wire and test, since I can connect that direct to the indoor temp input.
Yes, that was me Dale, I was the one who mentioned testing the temp diode. I may have time to try it tomorrow. I’ll take my multimeter and test the voltages that you haven’t done yet as well. I did test the wind supply voltage, that is 8.06 if I remember correctly.
On the TWI temp diode, the center ground leg is snipped off. The cathode is hooked to black and anode is hooked to red as would be expected for color coding. However, it’s interesting that they have the indoor probe wired to the auxillary circuit. For the regular indoor temp circuit it would be cathode to yellow and anode to green. Also, the two diodes are not legged the same. On the old one, with the flat facing you, legs down, it’s +Vs in, GND, V-out. The diode I ended up ordering was the Texas Instruments LM34CAZ/NOPB-ND, on that one, with the flat facing you, legs down, it’s GND, V-out, +Vs. Photo of the original TWI temp diode (still functions fine)-
Not to worry Dale, as I mentioned I’ve been completely busy as well. Congratulations on your anniversary! Before you get too far along with the Climatronics parts, I am now seriously considering selling on the Wind Mark III boom, as I will more than likely never be able to interface it with the WR-25. A conversion on the console is now most likely impossible since TWI has completely closed at this point. The only option is to track down one of their former techs personally. I do have LinkedIn, so that may be an option. I do have the wind boom pretty much completely refurbished, I still have to install a cable on it but then it will be an excellent boom for someone who can actually use it. Oh, that was another interesting development. Apparently Climatronics is also completely out of business. I tried to contact tech support and never heard back. Their website copyright is also out of date by two years.
In new exciting news, I acquired the latest Heathkit that was on eBay, I got a 1990 ID-5001-C, with all the sensors except rain. A bit pricey, but I couldn’t resist, I’ve wanted one since I was a kid, plus probably a good price considering all the sensors included. I have it up and running now after a few weeks of restoration work on it (not the electronics, they all work perfectly) re-calibration, and getting everything I needed to mount it on the roof safely. Operates without a single flaw, even the humidity tracks fine. True WX dream machine. Definitely the most advanced WX console to date. I’ll do a seperate thread on that soon.
I am still fully committed to also getting the TWI functioning, but it is a challenge for sure.
Here’s all the pin connections for the TWI (click to enlarge)-
Dale, would you have a spare tipping rain gauge you’d be willing to part with by any chance? Not picky about make, just need one that works or is repairable.