ILI9488 MISO Fault Question

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Joined: 25/06/2022
Location: United Kingdom
Posts: 1229
Posted: 11:32pm 02 Dec 2022      

  phil99 said  The only thing that can prevent BLIT working is too high a resistance between SDO and Pico MISO. Perhaps your resistor has the wrong markings on it.
With the power off measure the resistance between the SDO(MISO) pin on the panel and MISO (GP16) on the Pico.
I have tried a variable resistor instead of the 680R, above 1k the number of Blit colours decreases until there is just one - white.
If the resistance is decreased SD and touch stop working.

I will try a 1KR pot, who knows. maybe but as display working then draw an interface and test mmbasic trig for analogue displays which I wouldn't use blit for anyway.
I just found this display in a box of bits and wish I hadn't.