11/21/2025 1:34 AM - routed the schematic basic, has most parts figured out

pretty cool, now i just need to route the rest of the schematic...

time to route the power mosfets, and the encoder and encoder switch

found good documentation for the lcd: https://www.waveshare.com/wiki/1.9inch_LCD_Module#IDE_Installation

,,,,,,,,,,,,,,,,,

11/21/2025 1:58 AM - added lcd to schematic

added lcd to schematic and connected to xiao. link to lcd: https://www.aliexpress.com/item/1005006824077787.html

11/21/2025 11 PM - added several more devices to the schematic

added lcd footprint, added rotary encoder with switch to schematic, wired up rotary encoder and rewired lcd without cs pin. :3

........................

11/22/2025 - finished routing the pcb

pcb routing done yay!!!! had to do 2 trial of this, second design is much more organized and neat than the first design. first design was too small too lol

12/6/2025 - re routed the pcb

rerouted the pcb with the mosfet power control system, added a neopixel if need status, and improved holes

............................................

12/7/2025 - added test firmware

#include
#include "pico/stdlib.h"
#include "hardware/spi.h"
#include "hardware/dma.h"
#include "JPEGDEC.h"
#include "image_data.h"

#define TFTSPIPORT spi0
#define TFTPINSCK 2
#define TFTPINMOSI 3
#define TFTPINCS 1
#define TFTPINDC 0
#define TFTPINRST 26
#define TFTPINBL 27

#define TFTWIDTH 240
#define TFTHEIGHT 240

JPEGDEC jpeg;

void tftwritecommand(uint8t cmd)
{
gpioput(TFTPINDC, 0);
gpioput(TFTPINCS, 0);
spiwriteblocking(TFTSPIPORT, &cmd, 1);
gpioput(TFTPINCS, 1);
}

void tftwritedata(uint8t *data, sizet len)
{
gpioput(TFTPINDC, 1);
gpioput(TFTPINCS, 0);
spiwriteblocking(TFTSPIPORT, data, len);
gpioput(TFTPIN_CS, 1);
}

void tftsetwindow(uint16t x, uint16t y, uint16t w, uint16t h)
{
uint8t caset[] = {0, (uint8t)x, 0, (uint8t)(x + w - 1)};
uint8t raset[] = {0, (uint8t)y, 0, (uint8t)(y + h - 1)};

tft_write_command(0x2A);
tft_write_data(caset, 4);
tft_write_command(0x2B);
tft_write_data(raset, 4);
tft_write_command(0x2C);

}

void tftinit()
{
spiinit(TFTSPIPORT, 62500000);
gpiosetfunction(TFTPINSCK, GPIOFUNCSPI);
gpiosetfunction(TFTPINMOSI, GPIOFUNCSPI);

gpio_init(TFT_PIN_CS);
gpio_set_dir(TFT_PIN_CS, GPIO_OUT);
gpio_put(TFT_PIN_CS, 1);
gpio_init(TFT_PIN_DC);
gpio_set_dir(TFT_PIN_DC, GPIO_OUT);
gpio_put(TFT_PIN_DC, 1);

if (TFT_PIN_RST != -1)
{
    gpio_init(TFT_PIN_RST);
    gpio_set_dir(TFT_PIN_RST, GPIO_OUT);
    gpio_put(TFT_PIN_RST, 1);
    sleep_ms(100);
    gpio_put(TFT_PIN_RST, 0);
    sleep_ms(100);
    gpio_put(TFT_PIN_RST, 1);
    sleep_ms(200);
}

if (TFT_PIN_BL != -1)
{
    gpio_init(TFT_PIN_BL);
    gpio_set_dir(TFT_PIN_BL, GPIO_OUT);
    gpio_put(TFT_PIN_BL, 1);
}

tft_write_command(0x11);
sleep_ms(120);
tft_write_command(0x3A);
uint8_t color[] = {0x55};
tft_write_data(color, 1);
tft_write_command(0x36);
uint8_t rot[] = {0x00};
tft_write_data(rot, 1);
tft_write_command(0x21);
tft_write_command(0x29);

}

int drawMCU(JPEGDRAW *pDraw)
{

tft_set_window(pDraw->x, pDraw->y, pDraw->iWidth, pDraw->iHeight);

gpio_put(TFT_PIN_DC, 1);
gpio_put(TFT_PIN_CS, 0);

spi_write_blocking(TFT_SPI_PORT, (uint8_t *)pDraw->pPixels, pDraw->iWidth * pDraw->iHeight * 2);

gpio_put(TFT_PIN_CS, 1);
return 1;

}

int main()
{
stdioinitall();

gpio_init(0);
gpio_set_dir(0, GPIO_OUT);
gpio_put(0, 1);

tft_init();

tft_set_window(0, 0, TFT_WIDTH, TFT_HEIGHT);

while (true)
{

    for (int i = 0; i < total_images; i++)
    {

        if (jpeg.openFLASH((uint8_t *)image_list[i], image_sizes[i], drawMCU))
        {

            jpeg.setPixelType(RGB565_BIG_ENDIAN);
            jpeg.decode(0, 0, 0);
            jpeg.close();
        }

        sleep_ms(3000);
    }
}

}

12/25/2025 - update readme

added bom to readme

1/18/2026 - Updated BOM and added gerber

New BOM: