(13) 2.1-Inch Round Display with Magnetic Encoder Knob #ESP32S3 - YouTube
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Working on it.
Found an LVGL library for esphome (super easy to create ui’s with LVGL and Squareline Studio). But this SPI chip isn’t supported by the default eSPI library used, so it doesn’t work.
I’m currently trying to program it using Arduino IDE with MQTT/REST API to get it working as a thermostat.
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Can you share the library link please?
Already a thread on this, but yes, this on ESPHome would be fantastic.
Link:
But like I mentioned, the SPI chip for the display is not supported by the eSPI library used.
You can modify the code to work with this library, but it’s quite a hastle:
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Did you get it working in ESPHOME?
Thanks for pulling me in to this thread 
A year ago or so I wanted to build a rotary device like this on my own, using 3D printed chassis and ESPHome - because I couldn’t find an off the shelf one.
Built a custom PCB with an esp module, printed a chassis, but kinda failed on the mechanics of it 
Fast forward a few months and these are all over the internet, on the cheap side, no less. Progress!
Still, I’d love to have one of these devices working with ESPHome and lvgl. It’ll take time, but we’ll get there 
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How would one go about trying to use the Arduino_GFX lib in esphome?
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did you get this working? I’m struggling with SPI pins, they re the same as the RGB pins so won’t compile
so, I got everything working except the screen, no idea where to go from here, anyone else made progress?
OK so I got it working thanks to the awesome people at HA 
I can’t join discord group, in the web simply no loading, in the app it says that the link takes you to a server or channel that I don’t have access to
Help
think getting it working with MQTT is the most easy i guess.
Solved lcd problem using only dev branch for st7701s:
external_components:
- source:
type: git
url: https://github.com/esphome/esphome
ref: dev # Usa la versione di sviluppo (dev)
#component: st7701s
components: # Specifica i componenti che desideri importare
- st7701s # Ad esempio, un display o altro componente
thanks to @kto for display yaml:
display:
- platform: st7701s
id: ${device_name}_display
spi_mode: MODE0
data_rate: 10MHz
color_order: RGB
# XXX DEBUG
show_test_card: true
# XXX
dimensions:
width: 480
height: 480
cs_pin: 21
de_pin: 39
vsync_pin: 48
hsync_pin: 40
pclk_pin:
number: 45
ignore_strapping_warning: true
pclk_frequency: 15MHz
pclk_inverted: false
hsync_pulse_width: 10
hsync_back_porch: 10
hsync_front_porch: 10
vsync_pulse_width: 2
vsync_back_porch: 12
vsync_front_porch: 14
data_pins:
blue:
- number: 47 # LCD_D0 = b0
allow_other_uses: true
- number: 41 # LCD_D1 = b1
allow_other_uses: true
- 0 # LCD_D2 = b2
- 42 # LCD_D3 = b3
- 14 # LCD_D4 = b4
green:
- 8 # LCD_D5 = g0
- 13 # LCD_D6 = g1
- 18 # LCD_D7 = g2
- 12 # LCD_D8 = g3
- 11 # LCD_D9 = g4
- 17 # LCD_D10 = g5
red:
- 10 # LCD_D11 = r0
- 16 # LCD_D12 = r1
- 9 # LCD_D13 = r2
- 15 # LCD_D14 = r3
- 46 # LCD_D15 = r4
init_sequence:
# Reference: wireless-tag sample code:
# https://github.com/wireless-tag-com/ZX2D10GE01R-V4848/blob/ad21b3659527618fdd752cc0801b0a36f6c5e52c/main/screen.c
- [0xFF, 0x77, 0x01, 0x00, 0x00, 0x13]
- [0xEF, 0x08]
- [0xFF, 0x77, 0x01, 0x00, 0x00, 0x10] # CMD2_BKSEL (already in esphome ST7701S::write_init_sequence_)
- [0xC0, 0x3B, 0x00] # Scan line
- [0xC1, 0x0B, 0x02] # VBP
- [0xC2, 0x07, 0x02]
- [0xCC, 0x10]
- [0xCD, 0x08] # RGB format | ?565??? 666??
- [0xB0, 0x00, 0x11, 0x16, 0x0e, 0x11, 0x06, 0x05, 0x09, 0x08, 0x21, 0x06, 0x13, 0x10, 0x29, 0x31, 0x18] # IPS | 255 | 251 | 247 down | 239 | 231 | 203 | 175 | 147 | 108 | 80 | 52 | 24 | 16 | 8 down | 4 | 0
- [0xB1, 0x00, 0x11, 0x16, 0x0e, 0x11, 0x07, 0x05, 0x09, 0x09, 0x21, 0x05, 0x13, 0x11, 0x2a, 0x31, 0x18] # IPS | 255 | 251 | 247 down | 239 | 231 | 203 | 175 | 147 | 108 | 80 | 52 | 24 | 16 | 8 down | 4 | 0
- [0xFF, 0x77, 0x01, 0x00, 0x00, 0x11]
- [0xB0, 0x6d] # VOP 3.5375+ *x 0.0125 | 5D
- [0xB1, 0x37] # VCOM amplitude setting
- [0xB2, 0x81] # VGH Voltage setting | 12V
- [0xB3, 0x80]
- [0xB5, 0x43] # VGL Voltage setting | -8.3V
- [0xB7, 0x85]
- [0xB8, 0x20]
- [0xC1, 0x78]
- [0xC2, 0x78]
- [0xD0, 0x88]
- [0xE0, 0x00, 0x00, 0x02]
- [0xE1, 0x03, 0xA0, 0x00, 0x00, 0x04, 0xA0, 0x00, 0x00, 0x00, 0x20, 0x20]
- [0xE2, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]
- [0xE3, 0x00, 0x00, 0x11, 0x00]
- [0xE4, 0x22, 0x00]
- [0xE5, 0x05, 0xEC, 0xA0, 0xA0, 0x07, 0xEE, 0xA0, 0xA0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]
- [0xE6, 0x00, 0x00, 0x11, 0x00]
- [0xE7, 0x22, 0x00]
- [0xE8, 0x06, 0xED, 0xA0, 0xA0, 0x08, 0xEF, 0xA0, 0xA0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]
- [0xEB, 0x00, 0x00, 0x40, 0x40, 0x00, 0x00, 0x00]
- [0xED, 0xFF, 0xFF, 0xFF, 0xBA, 0x0A, 0xBF, 0x45, 0xFF, 0xFF, 0x54, 0xFB, 0xA0, 0xAB, 0xFF, 0xFF, 0xFF]
- [0xEF, 0x10, 0x0D, 0x04, 0x08, 0x3F, 0x1F]
- [0xFF, 0x77, 0x01, 0x00, 0x00, 0x13]
- [0xEF, 0x08]
- [0xFF, 0x77, 0x01, 0x00, 0x00, 0x00]
- [0x36, 0x00] # MADCTL_CMD (already in esphome ST7701S::write_init_sequence_)
- [0x3A, 0x66] # COLMOD 55/50=16bit(RGB565); 66=18bit(RGB666); 77?????3AH?=24bit(RGB888)
- [0x11] # SLEEP_OUT (already in esphome)
- delay 120ms
- [0x29] # DISPLAY_ON (already in esphome)
- delay 20ms
and @bjm for give me hope
Now work all perfectly, only few thinks to fix like speed and smooth display graphic operation, all the other sensor and led control are OK
Thanks all
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Whats the project look like?