VU7+ schematic

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VU7+ schematic

Unread postby alopecosa » Fri Oct 14, 2016 4:33 am

Is it possible to get the schematic of the VU7+ PCB?
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Re: VU7+ schematic

Unread postby odroid » Fri Oct 14, 2016 9:41 am

No. Vu7/Vu7+/Vu5 were developed/manufactured by third parties and they didn't supply the schematics to us.

What do you want to know?
I can forward your question to our third party.
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Re: VU7+ schematic

Unread postby alopecosa » Sat Oct 15, 2016 7:40 pm

I just want to add some Features like backlight dimming and so on for a project and i am afraid to break the lcd if i do some "reverse engineering"
But it seems i have to take the risk then.

I will report back if i succeeded... or failed :)
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Re: VU7+ schematic

Unread postby striebel » Sat Oct 22, 2016 5:53 am

i want to add a backlight dimming, too. I use the display for a wireless qt based home automation center and it would be very nice to add something like an idle mode. The only thing which is possible without the schematic is to add an on/off functionality just by replacing the switch.

Thanks for your help!
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Re: VU7+ schematic

Unread postby striebel » Fri Nov 11, 2016 6:16 am

In the meantime i figured out a way to add a backlight dimming. I used a Atmel xmega as a backlight controller, which is connected to the odroids serial interface. This microcontroller generates a PWM which is connected to the led driver ic enable pin.

regards,
striebel
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Re: VU7+ schematic

Unread postby odroid » Sat Nov 12, 2016 4:37 pm

striebel wrote:In the meantime i figured out a way to add a backlight dimming. I used a Atmel xmega as a backlight controller, which is connected to the odroids serial interface. This microcontroller generates a PWM which is connected to the led driver ic enable pin.

regards,
striebel



Great! You made it. :o
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Re: VU7+ schematic

Unread postby richcsst » Fri Aug 11, 2017 8:22 pm

I'd like to know what the three metal pads next to the red square are. I am having problems with stability on this thing, even with the special extra module on the USB connector to supply extra power you sell. I'm hoping to find a place to supply a solid 5 (or 3.3 if different) volts to this display board, and am hoping these three pads give me access to the power buss.
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Re: VU7+ schematic

Unread postby odroid » Fri Aug 11, 2017 10:30 pm

Those metal pads should be used for programming the MCU on the Vu7 board.
You have to find a 5volt power rail near the micro-USB connector with a DMM.
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Re: VU7+ schematic

Unread postby richcsst » Fri Aug 18, 2017 6:50 pm

Well, I had to ask. Tapping the rail by the USB connector was my backup plan, and now my only plan. Thank you.

odroid wrote:Those metal pads should be used for programming the MCU on the Vu7 board.
You have to find a 5volt power rail near the micro-USB connector with a DMM.
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