2.4 Inch TFT with 4.2V Li-ion 1200 mah

Other Hardware Displays
1

Hello Friends ,

In my project Uno with a 2.8" TFT display (ili9341) is being used.Code & display working perfectly when its connected via computer USB.
Today tried with 4.2V Li-ion 1200 mah,Uno got powered up but TFT failed to display very dull Screen(Almost invisible).
(battery measured Voltage 4.19V)

Battery suppy Powered into Vin and GND.

Kindly suggest solution.

Thanks in advance.

Rezox

2

try this, not expensive... MT3608 2A DC-DC Step Up Power Apply Booster Power Module for Arduino

1 Like
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Thanks,
You mean 4.2V is not sufficient for TFT.

4

Vin is not suitable to power any TFT display. It has a weak LDO, that can only supply the UNO (plus some small IO output). LDO will further reduce the voltage.

Yes, use a step-up converter to 5V, and connect to 5V pin.

1 Like
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Alright Sir,I will apply your suggestion,Thanks

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Thank You Sir

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Thank you Sir

8

Thanks Mr.LFRED and Mr.ZinggJM.... My tft is working perfectly

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