Re: Introduction / Newbie Questions


AndyH
 

Hey Mark,

   The HiLetGo display has a 3.3V 3-pin voltage regulator on the board (U1), but by default it is not in circuit.  There's a small pair of pads (looks like a regular SMD pad) labeled J1.  If you jump the pads with a solder blob, you can run the display from 5V.

    Enjoy,
     Andy



On Sun, Nov 8, 2020 at 02:47 PM, Mark Erbaugh wrote:

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Display

I located a display on Amazon (https://www.amazon.com/HiLetgo-240X320-Resolution-Display-ILI9341/dp/B073R7BH1B/ref=pd_di_sccai_1/137-6123160-7195153?_encoding=UTF8&pd_rd_i=B073R7BH1B&pd_rd_r=c9b8f25e-8904-4eec-8556-c7f85bef70a3&pd_rd_w=scFer&pd_rd_wg=w9kKW&pf_rd_p=5415687b-2c9d-46da-88a4-bbcfe8e07f3c&pf_rd_r=TNTWYDB8SEGQJBMW9BKR&psc=1&refRID=TNTWYDB8SEGQJBMW9BKR)

 

that appears to be very similar. However, the docs say that it only runs on 3.3V, not 5V and that level shifters are required. I don’t see those on the schematic. Is this display being run at 5v?

 

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