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Adafruit BrainCraft Hat and fan not working
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Adafruit BrainCraft Hat and fan not working

by vivekg on Mon Apr 12, 2021 3:01 pm

Hi,

I received a BrainCraft hat as part of the Microsoft Lobe kit. Followed the instructions to set everything up, but unfortunately it seems like the backlight on the display is working on the hat, but the fan control and the actual display is showing nothing. I was able to get everything else working with the first tutorial (including the camera), the results of the camera do display on a monitor. But when no monitor is connected there never is anything (console or image) displayed on the built-in tft display on the BrainCraft hat. Also the fan never turns on. Feels like their is something wrong with the device. Any diagnostics or anything I can run?

Thank you,
Vivek

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Re: Adafruit BrainCraft Hat and fan not working

by adafruit_support_carter on Tue Apr 13, 2021 1:17 pm

For the fan, just to be sure, you went through the fan service setup?
https://learn.adafruit.com/adafruit-bra ... vice-setup

For the TFT - it's a little confusing. You're never seeing anything on it? Or you are as long as another HDMI monitor is attached?

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Re: Adafruit BrainCraft Hat and fan not working

by vivekg on Wed Apr 14, 2021 11:51 am

Never see anything on it at all, it is black.

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Re: Adafruit BrainCraft Hat and fan not working

by adafruit_support_carter on Wed Apr 14, 2021 12:35 pm


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Re: Adafruit BrainCraft Hat and fan not working

by vivekg on Wed Apr 14, 2021 12:57 pm

Hi,

Yes I already did the troubleshooting for both the fan and the display for pinning the kernel version. No change.

Vivek

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Re: Adafruit BrainCraft Hat and fan not working

by vivekg on Fri Apr 16, 2021 9:48 am

Any next steps I can take or get the part replaced?

Thanks,
Vivek

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Re: Adafruit BrainCraft Hat and fan not working

by adafruit2 on Sat Apr 17, 2021 1:23 pm

the fact that neither work is quite odd - it makes us think its a mechanical issue. can you post a photo showing the HAT plugged into the Pi
also, you tried the dotstar LED / joystick example code and those work?

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Re: Adafruit BrainCraft Hat and fan not working

by vivekg on Mon Apr 19, 2021 6:12 pm

Hi,

I did not try those samples. I followed the setup guide and the troubleshooting that was included in the Machine Learning 101 with Lobe and BrainCraft tutorial. According to that trouble shooting it should have displayed a console on the BrainCraft Hat.

Attached is the image of the attached hat.

IMG_0213 copy.jpeg
IMG_0213 copy.jpeg (81.37 KiB) Viewed 88 times

IMG_0213 copy.jpeg
IMG_0213 copy.jpeg (81.37 KiB) Viewed 88 times


Thanks,
Vivek
Attachments
IMG_0214 copy.jpeg
IMG_0214 copy.jpeg (157.24 KiB) Viewed 88 times

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Re: Adafruit BrainCraft Hat and fan not working

by adafruit2 on Mon Apr 19, 2021 6:18 pm

ok please do try them, it will help us figure out what is amiss

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Re: Adafruit BrainCraft Hat and fan not working

by vivekg on Mon Apr 19, 2021 6:24 pm

Could you provide a link to the example as the one I found had to do with LED lights not a display.

Thanks,
Vivek

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Re: Adafruit BrainCraft Hat and fan not working

by adafruit2 on Mon Apr 19, 2021 6:26 pm

thats what you want to do, try the lights and joystick, do they work

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Re: Adafruit BrainCraft Hat and fan not working

by vivekg on Mon Apr 19, 2021 6:48 pm

Hi,

Okay so I found the examples at the Python section of what you had sent. For the joystick test. It only registered up and it was very laggy in registering it. Down, left, right and button press did not work. For the LED there was no result, the LEDs did not flash.

Hope that helps.

Thanks,
Vivek

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Re: Adafruit BrainCraft Hat and fan not working

by adafruit2 on Mon Apr 19, 2021 6:59 pm

ok we can try to replace it - email support@adafruit for a new Braincraft HAT with a link to this thread.

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Re: Adafruit BrainCraft Hat and fan not working

by vivekg on Mon Apr 19, 2021 7:24 pm

Thank you!

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Re: Adafruit BrainCraft Hat and fan not working

by tbray on Thu May 06, 2021 2:00 pm

I finally got around to setting up my BrainCraft board and I am also not getting the fan to work using the fan setup procedure. When I check it says that the service is not found.

I did use the command: raspi-gpio set 4 op pn dh and the fan turned on. For now, since I had to remove the heat sinks on my PI4, I added that command to the end of .bashrc so that the fan just comes on.

So something is wrong with the service setup. The fan is a bit noisy so it would really be nice if it cycled on and off with temperature.

There is a fan option now in the raspi-config but that didn't seem to want to turn on the fan either, or maybe I didn't let it get hot enough. The minimum temperature is 60 which, if it is celsius, is. pretty hot.

I am running the 2021-03-04 OS, a RPI 4 8GB, with the update / upgrades completed.

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