My Own GeekMagic SmallTv

Got one! And you know what? Firmware is not open source. I need to write my own right?

RIGHT?

No more talking let’s start.

There are two versions. PRO version with a touch button on top with ESP32 inside, and other one without. The other one have ESP8266 inside.

It’s from aliexpress, you never know what you will get ;)

Wanna look inside? Someone did a video. Here you are:

And this is mine:

What to we need?

• USB to TTL converter
• few spare pins
• solder iron
• few cables
• computer ;)

I think you guess it, but:

• GRN to ground pin
• RX to TTLs TX pin
• TX to TTLs RX pin
• VCC to 3.3V (5V works fine ;)
• FLASH - short to ground during power on to upload flash.

Now you need to setup PlatformIO new project. If you really want Arduino IDE will be fine.

Create src/main.c …

And now what? Now we need some informations…

• What microcontroller we have
• What tft driver we need to use
• Where the screen is connected?

What pins goes to tft socket?

LCD use those pins:

• 14
• 13
• 0
• 2
• 5

It’s not enough, uncle google your friend… (ugh! forget to ask chat GPT, next time)

Anyway I found this: https://community.home-assistant.io/t/installing-esphome-on-geekmagic-smart-weather-clock-smalltv-pro/618029

There is lot of informations. If you carefully read whole conversation you will know that you need to use ST7789 tft driver and pins are:

• TFT_CLK 14
• TFT_MOSI 13
• TFT_DC 0
• TFT_RST 2
• TFT_BACKLIGHT 5
• TFT_CS 15

Now we’re talking.

Our brand new main.c:

#include <Arduino.h>
#include <Adafruit_GFX.h>
#include <Adafruit_ST7789.h>

#define TFT_CLK 14
#define TFT_MOSI 13
#define TFT_DC 0
#define TFT_RST 2
#define TFT_CS 15
#define TFT_BACKLIGHT 5

Adafruit_ST7789 tft = Adafruit_ST7789(TFT_CS, TFT_DC, TFT_RST);

void setup() {
  pinMode(TFT_BACKLIGHT, OUTPUT);
  digitalWrite(TFT_BACKLIGHT, LOW);
  tft.init(240, 240, SPI_MODE3);
}

void loop() {
  tft.fillScreen(ST77XX_BLACK);
  delay(100);
  tft.fillScreen(ST77XX_WHITE);
  delay(100);
  tft.fillScreen(ST77XX_YELLOW);
  delay(100);
  tft.fillScreen(ST77XX_GREEN);
  delay(100);
  tft.fillScreen(ST77XX_BLUE);
  delay(100);
  tft.fillScreen(ST77XX_RED);
  delay(100);
}

It work!!! Great. My own MiniTv firmware. NICE! But what I can display on it?

Yes! PIX! My other project uses ESP with led matrix.

https://github.com/fazibear/pix/tree/master/pix_esp8266

I just need to write another front end to display things on tft display. Let’s do IT.

FEW HOURS LATER

Voila! Yet another interesting project without AI :P

Whoops. It’s 4AM. I need to sleep.

Here is the code: https://github.com/fazibear/pix/blob/master/pix_esp8266/src/tft/tft.cpp

Good Night!