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PWM control of LCD TFT backlight using 2n3904 and 2n3906 transistors
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74 Views β€’ Nov 5, 2023 β€’ Click to toggle off description
Thanks to Reddit user sarahMCML for the circuit description.

Goal:
- Control the backlight of LCD using PWM signal from ESP32

Difficulties:
- LED backlight runs at 5v
- GPIO pins from ESP32 output at 3.3v
- LED backlight has cathode (negative side) internally shorted to ground, can only access anode (LED+/positive side) on header pins
- Using only commonly available 2n3904 and 2n3906 transistors
Metadata And Engagement

Views : 74
Genre: Gaming
Date of upload: Nov 5, 2023 ^^


Rating : 5 (0/2 LTDR)

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User score: 100.00- Overwhelmingly Positive

RYD date created : 2023-11-06T08:46:27.463939Z
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Nyo connections found on the description ;_; report a issue lol

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