Recent content by CEFuller

Thanks Bryan! Shorted the gate pin and saw the 12V coming out. Figured out everything was working coming into the BS170 so resoldered and it works great now. Your instructions are awesome and had a great time putting everything together. Just need to improve my soldering skills it seems. Thanks...

Resoldered the joint same issue. The voltage on the gate pin is 12V. Voltage on the attmega 5 pin is 3.3V at 100% fan speed And goes down to 0 at 0% fan speed. Turned out it was the solder joint on the right pin of the BS170. Works like a charm now!! Thanks for the help troubleshooting!

No. I believe the fan needs about 5V to get it going. The 5V pin next to is good. But can't get more than 1V out of the blower pin.

Tried that. Pins looked good. My PID output parameters are good ya? Already tried changing it to pulse.

No those are in the right spots.

No luck on the power supply. Orientation of everything seems good as far as I can tell. See pic of board in link.

Tried Pulse mode last night...no dice. Ill check those tonight and post a pic. Thanks!

Powering with a 12V (stole it off my router) to the board yes and confirmed that the 12V is going into the MOSFET. I did read a similar thread where the power supply was the issue. I have the power supply I plan to use coming in tonight so I will see if that does anything. I would think if the...

Hey Ralph, I measured from GND to BLOW pins on both the CAT5 and the HM board. I was only planning to use the fan at this time and was under the impression that only the center pins (GND and BLOW) were used to control blower output. Let me know if I am mistaken. Thanks.

Hi Guys, Just completed my first Heatermeter build and everything seems to work great with the exception of the blower output voltage. 12V is getting in but it will only output 1.2 V regardless of the software settings I change on the fan. My first thought is that the MOSFET is bad, so I did...