Got this $16-20 ESP32 S3 + 3.5" 320x480 LCD dev board working with ESPhome - if anyone is interested the details are here:
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Nice. Done any LVGL on it yet?
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Not yet but I will eventually 
only using LVGL these days
Happy that I found your post ! Well done, any suggestion how I can use this ESP32 display in Arduino with TFT_eSPI I cannot get it to work. Thank you
LVGL is now working! And updated the display driver is now supported by native component - link to my github above goes to updated files.
The touchscreen also now has support in ESPHome.
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LOL that’s why the touch was working without the external component! I didn’t even pay attention as to why/how but it just worked with the same exact include without the external component! because you added it of course Thanks!
I’m trying to flash my guition screen with esphome but I can’t seem to find a way to do that. The device disconnects from the COM port as soon as I connect to it.
Same problem with esptool.
Is there a way to put it in safe mode or something like that so I can flash it? I would like to backup the original ROM as well.
Sorry if this is a noob question, but I’m relatively new to ESP32 and never had this problem before.
There are two little buttons inside hole on the back corner, hold down the boot button and then plug into USB.
OR hold the boot button and press the reset button briefly. Then it goes into bootloader mode and can be programed.
You can unscrew the back cover to see them better at first.
Flash with https://web.esphome.io/ with the bin file from “download” option in your config.
I have no experience backing up original ROM - its just a demo so dont need it…
Thanks for your answer.
I managed to get a beautiful Hello World on my screen and will start playing around with the interface.
I also managed to backup the original ROM using this esptool.exe command:
esptool.py --port COM10 read_flash 0x00000 0x400000 image.bin
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You can find some good work here GitHub - NorthernMan54/JC3248W535EN: LVGL-480x320
- Working with LVGL
- Original ROM in the “Burn” subfolder
I used it as a boilerplate for my LVGL project and the only thing you have to keep in mind is the partitions.csv for the 16 MB flash that this device got from the manufacturer.
Happy coding!
Hello,
The problem with these displays with esphome is almost always:
They use I2C, but don’t route the connections.
On this Board Pins 4+8.
How are you supposed to use I2C? You could create a second I2C port, but most components in esphome only support one I2C bus.
EDIT: found a solution, your i2c bus fĂĽr the touchscreen has an id.
so one can use:
i2c:
sda: 9
scl: 10
id: default_i2c
i2c:
sda: 4
scl: 8
id: touchscreen_bus
am i right?
I’m having a problem with the audio output on the display.
I connected a speaker via the speaker connector on the back.
But no sound is coming out.
Here’s the code I’m using.
i2s_audio:
id: i2s_port_1
i2s_lrclk_pin: GPIO02 #GPIO02
i2s_bclk_pin: GPIO42 #GPIO42
i2s_mclk_pin: GPIO00
speaker:
- platform: i2s_audio
id: speak
dac_type: external #external
i2s_audio_id: i2s_port_1
i2s_dout_pin: GPIO41 #GPIO41
channel: stereo # mono
buffer_duration: 2s
# Media Player using speaker
media_player:
- platform: speaker
id: esphome_speaker
name: "ESPHome Speaker"
announcement_pipeline:
speaker: speak
num_channels: 1
rtttl:
speaker: speak
id: my_rtttl
gain: 70%
#----------------------------------------------------------------------------------
i2c: #Original
sda: 4
scl: 8
scan: true
id: touchscreen_bus
When I have the Arduino firmware on the display, the sound works.
But I’ve customized the display in esphome the way I need it.
But now I’d really like to have audio as well.
I need a little help with that.
i use the [GUITION 3.5” 320X480 JC3248W535EN]
Thanks.
I have the same display and managed to get the audio:
# Define the I2S audio bus
i2s_audio:
id: i2s_bus_audio_main
i2s_lrclk_pin: GPIO2
i2s_bclk_pin: GPIO42
i2s_mclk_pin: GPIO00
# Speaker component using I2S audio
speaker:
- platform: i2s_audio
id: board_speaker
i2s_audio_id: i2s_bus_audio_main # Link to the i2s_audio component ID
i2s_dout_pin: GPIO41 # Connected to DATA_I on U4 (as per schematic)
dac_type: external # The board uses an external amplifier chip (U4)
channel: mono # Assumed mono output from U4
use_apll: true
# Media player component that uses the speaker
media_player:
- platform: speaker
id: onboard_media_player
name: "${friendly_name} Audio"
announcement_pipeline:
speaker: board_speaker
format: WAV
codec_support_enabled: false
buffer_size: 6000
on_pause:
- logger.log: "Playback paused!"
on_idle:
- logger.log: "Playback finished!"
however the volume is very low and not really usable at this stage.
I use esp-idf framework:
esphome:
platformio_options:
upload_speed: 921600
board_build.flash_mode: dio
board_build.f_flash: 80000000L
board_build.f_cpu: 240000000L
esp32:
board: esp32-s3-devkitc-1
flash_size: 16MB
framework:
type: esp-idf
sdkconfig_options:
CONFIG_ESP32S3_DEFAULT_CPU_FREQ_240: "y"
CONFIG_ESP32S3_DATA_CACHE_64KB: "y"
CONFIG_ESP32S3_DATA_CACHE_LINE_64B: "y"
CONFIG_SPIRAM_FETCH_INSTRUCTIONS: y
CONFIG_SPIRAM_RODATA: y
psram:
mode: octal
speed: 80MHz
I got the audio volume up to a good level by soldering a 10kΩ pull-up resistor to the amplifier chip (Pin 1 of U4, the NS4168) connecting it to a 3.3V source.
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I’ve copied the code so far.
When I start a song, there’s a very brief crackle in the speaker.
But no sound comes out, even when I turn it up to full volume.
I haven’t soldered in the resistor yet.
Do you get any sound without the resistor?
Yes without the resistor sound was there but very quiet even with 100% volume.
Hmm, strange.
Nothing’s coming out for me.
Did you play a song via Home Assistant? Or how do you use the media player in esphome?
Are you still using an external component?
i use this
external_components:
- source: github://pr#7592
components: [axs15231]
- source: github://pr#7591
components: [touchscreen]
I don’t use any external components
substitutions:
friendly_name: Guition Display
esphome:
on_boot:
priority: -100
then:
- lvgl.page.show:
id: energy_page
name: display-guition-01
platformio_options:
upload_speed: 921600
board_build.flash_mode: dio
board_build.f_flash: 80000000L
board_build.f_cpu: 240000000L
esp32:
board: esp32-s3-devkitc-1
flash_size: 16MB
framework:
type: esp-idf
sdkconfig_options:
CONFIG_ESP32S3_DEFAULT_CPU_FREQ_240: "y"
CONFIG_ESP32S3_DATA_CACHE_64KB: "y"
CONFIG_ESP32S3_DATA_CACHE_LINE_64B: "y"
CONFIG_SPIRAM_FETCH_INSTRUCTIONS: y
CONFIG_SPIRAM_RODATA: y
psram:
mode: octal
speed: 80MHz
logger:
baud_rate: 921600
level: INFO
api:
encryption:
key: !secret api_key
ota:
- platform: esphome
password: !secret ota_password2
wifi:
networks:
- ssid: !secret wifi_ssid
password: !secret wifi_password
- ssid: !secret wifi2_ssid
password: !secret wifi_password
manual_ip:
[redacted]
dns1: !secret dns_1
dns2: !secret dns_2
i2s_audio:
id: i2s_bus_audio_main
i2s_lrclk_pin: GPIO2
i2s_bclk_pin: GPIO42
i2s_mclk_pin: GPIO00
speaker:
- platform: i2s_audio
id: board_speaker
i2s_audio_id: i2s_bus_audio_main
i2s_dout_pin: GPIO41
dac_type: external
channel: mono
use_apll: true
media_player:
- platform: speaker
id: onboard_media_player
name: "${friendly_name} Audio"
announcement_pipeline:
speaker: board_speaker
format: WAV
codec_support_enabled: false
buffer_size: 6000
on_pause:
- logger.log: "Playback paused!"
on_idle:
- logger.log: "Playback finished!"
spi:
id: display_qspi
type: quad
clk_pin: 47
data_pins: [21, 48, 40, 39]
i2c:
sda: 4
scl: 8
id: touchscreen_bus
output:
- platform: ledc
pin: GPIO1
id: backlight
light:
- platform: monochromatic
output: backlight
name: "backlight Light"
restore_mode: ALWAYS_ON
display:
- platform: qspi_dbi
model: axs15231
data_rate: 40MHz
id: my_display
spi_id: display_qspi
dimensions:
height: 480
width: 320
cs_pin: 45
rotation: 90 # 90 for landscape, 0 for portrait
auto_clear_enabled: false
touchscreen:
- platform: axs15231
id: my_touch
display: my_display
i2c_id: touchscreen_bus
calibration:
x_min: 0
x_max: 461
y_min: 0
y_max: 310
transform:
swap_xy: true
mirror_y: true
on_touch:
- lambda: |-
ESP_LOGI("cal", "x=%d, y=%d, x_raw=%d, y_raw=%0d",
touch.x,
touch.y,
touch.x_raw,
touch.y_raw
);
[REDACTED FOR BREVITY]
Regarding media playing - I played mp3 from home assistant media, and tested it with TTS (again via home assistant media player.
The redacted bit at the bottom that’s just my sensors and lvgl config.
Somehow it’s not working.
I need the external components for the display to work properly.
I just tried it without the external components. But almost nothing works anymore.