Guru
Joined: 22/02/2006
Location: AustraliaPosts: 2080
| Posted: 06:50am 15 Apr 2026 |
G'day Guy's, Last week got 3 stepper boards and 2 each of the stepper driver chips and as I have got one of Peter's big 2350B boards so first job was getting my 3.5" touch screen working again.
Tried everything and just had no luck with a 2350B board at all with the LCD screen just flickering so decided to setup my 2040 zero mounted on one of Mixtels boards which fits on my breadboard nicely and put RP2040 V6.02.00 on the zero.
Yesterday had big think about it and drew the connections on a sheet of paper and this morning wired it all up only to find the same.
Now looking on my Ali purchase it did state the lcd was a ILI9341 so with the zero test had the same flickering problem so just set it up for later.
Reading thru the pico manual it came flooding back the big problem I had before was the MISO pin on the lcd must not be connected and sure enough clearing the options and going with the ILI9488 the GUI TEST LCDPANEL came up with the bubbles
also got the touch and SDCard working.> option list
PicoMite MMBasic RP2040 V6.02.00
OPTION SYSTEM SPI GP2,GP3,GP4
OPTION COLOURCODE ON
OPTION CPUSPEED (KHz) 200000
OPTION LCDPANEL ILI9488, LANDSCAPE,GP5,GP6,GP7
OPTION TOUCH GP9,GP10
GUI CALIBRATE 0, 3948, 3867, -1294, -872
OPTION SDCARD GP8
PicoMite MMBasic RP2040 V6.02.00
OPTION SYSTEM SPI GP2,GP3,GP4
OPTION COLOURCODE ON
OPTION CPUSPEED (KHz) 200000
OPTION LCDPANEL ILI9488, LANDSCAPE,GP5,GP6,GP7
OPTION TOUCH GP9,GP10
GUI CALIBRATE 0, 3948, 3867, -1294, -872
OPTION SDCARD GP8
So in the morning I will rewire the big board backup with the LCD and then wire up one of the stepper boards and see if I can get the first stepper moving
Regards Bryan