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October 21, 2015 at 11:21 pm in reply to: tingG Chip U8 Gets Smoking Hot! #8866

robertk925
Member

I hooked up a tiny 50mm fan and U8 doesn’t run hot anymore, so it must have been the original fan I was using. Thanks!

October 17, 2015 at 10:33 pm in reply to: tingG Chip U8 Gets Smoking Hot! #8855

robertk925
Member

Thanks Carl, that is helpful. I haven’t had time to try another fan. I also still need to measure the temperature of the top of the chip with my IR thermometer.

October 16, 2015 at 12:01 pm in reply to: tingG Chip U8 Gets Smoking Hot! #8852

robertk925
Member

Great, thanks for all of your help Carl. I will try to scrounge up a different fan.

October 15, 2015 at 8:46 pm in reply to: tingG Chip U8 Gets Smoking Hot! #8850

robertk925
Member

My fan is 80mm, .30A max, 12V. It blows below the tinyG, as I thought the pads on the bottom side of the board were the heatsinks for the stepper drivers?

October 13, 2015 at 6:52 pm in reply to: tingG Chip U8 Gets Smoking Hot! #8846

robertk925
Member

I disconnected the fan and the chip stays cool. So, I guess I should use a smaller fan?

October 12, 2015 at 12:36 am in reply to: tingG Chip U8 Gets Smoking Hot! #8839

robertk925
Member

Excellent, I will disconnect the fan and report back.

October 11, 2015 at 9:24 pm in reply to: tingG Chip U8 Gets Smoking Hot! #8837

robertk925
Member

Thanks for the reply Carl. No, the fan (90mm 12V) is the only thing I am powering. The tinyG is running 3 steppers (X, Y, and Z axes), but the U8 chip gets hot when I first turn tinyG on and haven’t even driven the steppers yet.
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robertk925

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