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
7
| 2 1 1
Asked on 9/7/17, 10:02 AM
0
vote
2753 Views

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
5675
| 1 1 3
Answered on 9/8/17, 1:16 AM
0
vote

Your answer

Please try to give a substantial answer. If you wanted to comment on the question or answer, just use the commenting tool. Please remember that you can always revise your answers - no need to answer the same question twice. Also, please don't forget to vote - it really helps to select the best questions and answers!

Ask a Question

Keep Informed

About This Forum

This community is for professionals and enthusiasts of our products and services.

Read Guidelines

Question tools

38 follower(s)

Stats

Asked: 9/7/17, 10:02 AM
Seen: 2753 times
Last updated: 9/8/17, 1:16 AM