MicroView and Phoenard Arduino Forum
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andrew.nottage

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Reply with quote  #1 
Just bought a MicroView (bundled with USB programmer) and tested it out. I plugged it in directly to my laptop via USB programmer and demo worked. I started uploading sketches via Arduino IDE and CodeBender and then screen stopped coming on. Sometimes, when I powered on device (through laptop with USB programmer), screen wouldn't turn on.

Did research and realized it wasn't a bad bootloader: I connected a 5mm LED and uploaded a sketch that both blinks the LED and tries to display a message on the OLED. The LED blinks as expected but the screen won't turn on [mad]

Please help. I also tried powering my device with a 6V battery and without the programmer attached. Screen still doesn't come on. Rarely, it will, like every 1 out of 20 attempts an sometimes it doesn't stay on. I also tried a different laptop (one was Windows 7, another Windows 10) with no success.
MLXXXp

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Reply with quote  #2 
It sounds like your MicroView is defective. Can you have it replaced under warranty?
andrew.nottage

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Reply with quote  #3 
Thanks for the response, MLXXXp.

How would I go about replacing it under warranty?

I ordered by Microview through Amazon and had it shipped outside the US (I live in the Caribbean).
MLXXXp

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I'm not affiliated with either Amazon or SparkFun. Maybe try contacting SparkFun Technical Support
https://www.sparkfun.com/technical_assistance
andrew.nottage

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Thanks.
ElsyKhong

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Reply with quote  #6 
Hi..i am a new user here and by profession i am a hardware design engineer. As per my knowledge the only problem is power supply this also happened to me. You should use the proper external power supply because laptop power is not able to provide sufficient current for the display. As you tried it already so i would like to suggest that check the fault in your MicroView and the power supply also.

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darthgarlic

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Reply with quote  #7 
Make sure the Microview is plugged into the USB converter properly. If it is 180' out it will burn out the Microview.

My USB converter has a stenciled picture in the "top left" that shows which way the Microview should be inserted.
viya0414

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Reply with quote  #8 
I would like to suggest that check the fault in your MicroView and the power supply also.

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