Try turning the backlight on 
1 Like
I’ve got a the Nixie clock version of this that appear to be a esp8266 , with you pin number I’ve got the screen and backlight working, with the adafruit gfx library and the adafruit st7789 library. This board also appears to have some leds I don’t know if they are addressable or RGB, no one would have any ideas? Ideas on the pins?
Great work so far I got the screen working pretty quick
A point to the device please.
Don’t know if anyone is interested, but turned out to be addressable led on pin 12 , trying to work out the touch sensor now
2 Likes
Hi!, could you upload the whole config, i’m trying to make it work using some code just read from this post but no luck the screen is on but nothing in it and i can ping it but no able to view logs from ESPhome, i have the one with the esp8266
esphome:
name: smartmini
platform: ESP8266
board: esp01_1m
# Enable logging
logger:
# Enable Home Assistant API
api:
password: "REDACTED"
ota:
password: "REDACTED"
wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password
fast_connect: True
manual_ip:
static_ip: 192.168.x.xxx
gateway: 192.168.xx.xx
subnet: 255.255.255.0
captive_portal:
time:
- platform: homeassistant
id: homeassistant_time
font:
- file: 'fonts/OpenSans-Regular.ttf'
id: font1
size: 30
color:
- id: color_green
red: 0%
green: 100%
blue: 0%
sensor:
# Uptime sensor
- platform: uptime
name: "Uptime"
# WiFi Signal sensor
- platform: wifi_signal
name: "WiFi Signalstärke"
update_interval: 60s
spi:
clk_pin: GPIO14
mosi_pin: GPIO13
interface: hardware
id: spihwd
output:
- platform: esp8266_pwm
pin: GPIO05
frequency: 20 Hz
id: pwm_output
light:
- platform: monochromatic
output: pwm_output
name: "Backlight"
display:
- platform: st7789v
model: "Custom"
spi_id: spihwd
height: 240
width: 240
offset_height: 0
offset_width: 0
dc_pin: GPIO02
reset_pin: GPIO04
#backlight_pin: GPIO25
eightbitcolor: True
#update_interval: never
update_interval: 5s
id: disp
spi_mode: mode3
lambda: |-
it.printf(0, 0, id(font1), id(color_green),"Test1");
it.printf(1, 1, id(font1), id(color_green),"Test2");
it.printf(10, 10, id(font1), id(color_green),"Test3");
it.printf(100, 100, id(font1), id(color_green),"Test4");
Mine is the esp32 so I’m probably no good to you.
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Also I changed my yaml and seen to have bricked the darn thing.
Good news… My Display just arrived and I was disappointed to see that it was ESP8266…
But after little poking around, I got the screen working… didn’t do full test! but this is my config
esphome:
name: mini-display-tv--yellow
friendly_name: Mini Display TV - Yellow
esp8266:
board: esp01_1m
external_components:
- source:
type: git
url: https://github.com/rletendu/esphome.git
ref: st7789_nobuffer_202312
# refresh: 0s
components: [st7789v]
# Enable logging
logger:
# Enable Home Assistant API
api:
encryption:
key: "xxx"
ota:
password: "xxx"
wifi:
ssid: xxx
password: xx
# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "Mini-Display-Tv--Yellow"
password: "xxxxxxx"
# captive_portal:
spi:
clk_pin: GPIO14
mosi_pin: GPIO13
interface: hardware
id: spihwd
# status_led:
# pin: GPIO2
output:
- platform: esp8266_pwm
pin: GPIO05
frequency: 20 Hz
id: pwm_output
light:
- platform: monochromatic
output: pwm_output
name: "Backlight"
font:
# gfonts://family[@weight]
- file: "gfonts://Roboto"
id: roboto
size: 12
color:
- id: color_green
red: 0%
green: 100%
blue: 0%
display:
- platform: st7789v
model: "Custom"
spi_id: spihwd
height: 240
width: 240
offset_height: 0
offset_width: 0
# dc_pin: GPIO02
# reset_pin: GPIO04
dc_pin: GPIO00
reset_pin: GPIO02
#backlight_pin: GPIO25
eightbitcolor: True
#update_interval: never
update_interval: 5s
id: disp
spi_mode: mode3
lambda: |-
auto red = Color(255, 0, 0);
auto green = Color(0, 255, 0);
auto blue = Color(0, 0, 255);
auto white = Color(255, 255, 255);
it.rectangle(20, 50, 30, 30, white);
it.rectangle(25, 55, 30, 30, red);
it.rectangle(30, 60, 30, 30, green);
it.rectangle(35, 65, 30, 30, blue);
Hope this helps others 
Only different is the DC & RESET pins
dc_pin: GPIO00
reset_pin: GPIO02
4 Likes
it is really slow to render… simple text is taking 0.33 s to render. A Full screen image is taking 2-3seconds to render!
not sure how to improve this…
I’m 99% confident that this product is based on this project GitHub - ClimbSnail/HoloCubic_AIO: HoloCubic超多功能AIO固件 基于esp32-arduino的天气时钟、相册、视频播放、桌面投屏、web服务、bilibili粉丝等
Hope that will make anything simpler.
Does anyone have a dump of the “ultra” model, I can’t seem to get the old image flashed from the github, just black screens on the screen itself.
Nevermind!
Update: I have never used esphome so I realize this makes me look like a PSYCHO
Is there a way to restore the original firmware after uploading esphome?
2 Likes
I’m also looking for dump (original FW) of PRO and ULTRA version.
But no luck so far …
I have uploaded the partition table and a dump of all but the spiffs partitions here: Unbricking · Issue #10 · GeekMagicClock/smalltv-pro · GitHub
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Which device is recommended, Pro or Ultra?
Thanks
What is this ultra? The first post refers to the smalltv and the smalltv pro. Where did the ultra come into it, and can you point to an example for sale?
They have some on this page as well as some of the standard ones, a couple of others have mentioned them in this thread.
I use the octopus Agile energy tariff, and I see these as great devices to put in rooms to say when energy is cheapest.
https://www.aliexpress.com/item/1005004679769445.html