UC1701 backlight only works when USB powered ?

The backlight should be controlled by setting pin 13 low, i understood.
And yes that works for the Proto with a 32U4 but only when the device is powered by USB.
How to turn it on when its not connected by a PC ? 
Note 'm using  the  <UC1701.h> lib

Peter
Peter
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Asked on 9/7/17, 10:02 AM
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Hi Peter,

How are you powering the PROTO? There are 2 options:

  • put 5V on a 5V terminal 
  • put 8-28V on the Vin terminal

The backlight is indeed connected to D13 and you can use PWM to choose the intensity. So i can't think of a reason why it would not work if the MCU has power.

Tom
Tom
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Answered on 9/8/17, 1:16 AM
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Asked: 9/7/17, 10:02 AM
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Last updated: 9/8/17, 1:16 AM