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STM32 board scheme

zexx86
Associate II

‎2011-03-09 2:31 AM

Posted on March 09, 2011 at 11:31

STM32 board scheme

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ColdWeather
Senior

‎2011-05-17 5:27 AM

Posted on May 17, 2011 at 14:27

Hi!

I would:

  1. reduce R2 from 10K to 1K to reduce the risk of spikes on the line.
  2. insert a diode (like SS14) between +5V and C14 at the input of LM3480 to filter input voltage negative spikes.
  3. anyway enlarge the capacitors around LM3480 to 10uF
  4. replace LM3480 by MIC5235
  5. insert resistors of about 330R before LED1 and LED2 else you kill either LED or GPIO pin.
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zexx86
Associate II

‎2011-05-17 5:27 AM

Posted on May 17, 2011 at 14:27

Thank you very much

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