OLED Screen question

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smoscar01
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OLED Screen question

Post by smoscar01 » Sat Jun 30, 2018 1:33 pm

Hey guys,

I just received a 1.44 inch TFT LCD and I have successfully connected it to the Pi using modprobe to send the framebuffer to the OLED screen.

I am ready now to desolder it from the PCB but I noticed it has a resistor connected to the LED pin (possibly to prevent burning the LED out), a voltage regulator and a capacitor connected to the VCC pin.

Is it safe to desolder the OLED and not add these components when building the VMU?

Trekintosh
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Re: OLED Screen question

Post by Trekintosh » Sat Jul 07, 2018 10:53 pm

That’s not an OLED screen, just a normal crappy lcd.

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smoscar01
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Re: OLED Screen question

Post by smoscar01 » Mon Jul 09, 2018 10:09 am

Trekintosh wrote:
Sat Jul 07, 2018 10:53 pm
That’s not an OLED screen, just a normal crappy lcd.
Oh my bad, to be honest I don't really know the difference between both.

Any ideas on the resistor, voltage regulator and capacitor question?

TheKayneGame
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Re: OLED Screen question

Post by TheKayneGame » Sat Jul 14, 2018 5:01 pm

Hi!

I reccomend Just letting the whole thing be.
the Voltage regulator and resistor are there to regulate the voltage and limit the current.
The LED resistor does not have to be there IF you provide the correct voltage to it (this can be found if there is a datasheet).
The Power regulator is also not needed IF you provide the correct voltage to it (this can also be found in the datasheet).

As for the capacitor it's used for smoothing out the voltage, its not necessary but recommended when working with audio signals.

You can also just trim the PCB with a hacksaw (Thats what i do if components are too large).

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