Is this a brown out caused by the servo?


 
M Hoskins said:
I am not using CAT5 - just an RCA cable connected to the Rpi's bottom port, right beside the power port.

and yes, the display and lights flash just like in the video.
Click to expand...

Ok, trying to make sense, but the rPi doesn't have an RCA jack... so I have to assume you have a HMv4.0 and you are talking about connecting the blower to the RCA jack on the HM board?

If your display and LED's are flashing then you are losing power for some reason, in all likelihood unless you have some kind of short elsewhere in your board or wiring you are experiencing brown outs due to drawing more current than your PS can supply. I do not recommend running a HM with a servo and a blower on the standard 12v 1A power supply, the servo and blower can draw a fair amount of juice, so you should beef up the PS to at least 2A or better if you want to run the servo as well as the blower.
 
Thanks Ralph - I actually just bought a 3.3A power supply, and the same issue is happening. Weird thing is that it was working fine before I soldered the RCA cable to the fan. I will re-visit this, and hopefully get it running soon.

And yes, I am running HM 4.0 with the RCA jack on the Arduino board.
 
M Hoskins said:
If I hook up the fan, it's fine. If I hook up just the probes its fine. But when my fan is attached and probes are plugged in, I get the exact same issue seen in the video. This seems to be especially noticeable when I have my pit probe plugged in.
Click to expand...

This also seems to indicate a short in your fan wiring, cause when the HM is reporting "NO PIT PROBE" the fan is not activated, as soon as you plug in the pit probe the fan will kick on and the short would cause a brown-out/reset. If you set the HM fan to manual mode and try to raise the fan speed from 0% without a pit probe plugged in I assume you will get a reset also, probably a single reset cause the HM will likely revert back to automatic mode with "No Pit Probe" after the reset.
 
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