Inside of Tuya Fingerbot ADAPROX doesn't inspire me

ESPHome
1

I bought this Fingerbot (Bluetooth) and its been nightmare ever since. it was working well, and I could make it work again with those HACS repositories, but I don’t want to rely on anything from tuya cloud. And I am also facing the issue where the arm doesn’t retract. Some people are facing that issue with zigbee pair

So I opened up the back panel to see and its just a stupid board loaded with tuya bloatware that is all of my trouble. This thing is heavily over-priced. , I want to just slice that board off and put my own esp32 or esp8266 module in there. Has anyone tried to make it work without tuya.

Can this be flashed with esphome ??
What are my options ??

IMG_1621
IMG_16211920×1920 227 KB

IMG_1619
IMG_16191920×1920 234 KB

IMG_1618
IMG_16181920×1920 287 KB

IMG_1615
IMG_16151920×1920 289 KB

2

No.

You will also need some motor driver.
The problem would be battery life, Esp/Esphome are not optimized for battery operation.

3

It’s TUYA. You can’t make a silk purse out of a sow’s ear.

4

I had to use translator for that.
I totally agree for Tuya, but here where I live many people appreciate fried sow’s ear. :joy:

1 Like
5

Ble version is running well offline without internet connection, so it is free of tuya cloud (after initial setup)

6

Nice! Can you explain better?

7

interesting, so I think I need to pick up soldering iron and fix it myself then.

so, Motor driver, esp8266 or esp32, and powersource. I will be using the fingerbot to power a device so it will be close to a powersource. I can simply give it external DC power. I think that should be enough ?

Do you think the zigbee version of the Fingerbot would have been a better choice ? OR do they require some sort of connection to tuya cloud as well ?

8

That will work. And easy to build and setup. Tiny DRV8838 module should be enough for that motor.

No. I personally haven’t played with those, but you find info on this forum.

9

If they are zigbee AND if someone has created a quirk for zha it will not connect to any cloud.

10

I am using Tuya BLE custom integration, which fetches device id and device key from Tuya cloud account (not changed over time) and home assistant communicates with device using Bluetooth only.

I have ESPHome devices acting as Bluetooth proxy so I can manage this device.

image
image565×223 12.1 KB

image
image332×965 23 KB

11

I took it apart to see whats inside.

IMG_1715
IMG_17151920×1440 208 KB

IMG_1714
IMG_17141920×1440 191 KB

IMG_1713
IMG_17131920×1440 160 KB

IMG_1712
IMG_17121920×1440 167 KB

IMG_1711
IMG_17111920×1440 206 KB

IMG_1710
IMG_17101920×1440 193 KB

IMG_1709
IMG_17091920×1440 171 KB

IMG_1708
IMG_17081920×1440 164 KB

IMG_1707
IMG_17071920×1440 173 KB

IMG_1706
IMG_17061920×1440 174 KB

IMG_1705
IMG_17051920×1440 184 KB

IMG_1704
IMG_17041920×1440 184 KB

IMG_1703
IMG_17031920×2560 303 KB

IMG_1702
IMG_17021920×1440 179 KB

IMG_1701
IMG_17011920×1440 180 KB

12

(not shown here) I have also replaced the board with esp32 with esphome in it - connected GPIO4 of esp32 to the PWM wire of the servo - supplied both the servo and esp32 with 5v supply.

Md1MJNCQIA
Md1MJNCQIA877×513 26.3 KB

Make sure the voltage doesn't drop below 5.0v, it generally drops when servo starts as it pulls a lot of current and voltage drops making esp32 go haywire. It took me a lot of time to figure it out.

here is the esphome code that I uploaded to the esp32 board

esphome:
  name: esp32-servo
  friendly_name: esp32-servo

esp32:
  board: esp32dev
  framework:
    type: arduino
#     version: latest
#   flash_size: 4MB
# preferences:
#   flash_write_interval: 1min

# Enable logging
logger:
  level: DEBUG

# Enable Home Assistant API
api:
  encryption:
    key: "T*******************************lsLmA="

ota:
  - platform: esphome
    password: "6*******************************9"

wifi:
  ssid: "MY_WIFI_ACCESS_POINT"
  password: "PASSWORD"

captive_portal:
# Define PWM output for servo (SG90 usually uses 50Hz)
output:
  - platform: ledc
    pin: GPIO4
    id: pwm_servo
    frequency: 50 Hz

# Servo component
servo:
  - id: my_servo
    output: pwm_servo

# Expose a number in Home Assistant to control the angle
number:
  - platform: template
    name: "Servo Angle"
    id: servo_angle
    min_value: 0
    max_value: 180
    step: 1
    optimistic: true
    set_action:
      - servo.write:
          id: my_servo
          level: !lambda 'return x / 180.0;'

# Move servo to 180° on boot
on_boot:
  priority: 800
  then:
    - delay: 500ms          # Optional: allow everything to initialize first
    - number.set:
        id: servo_angle
        value: 180

it now works without tuya now (yay), only issue is that esp32 is power hungry. I didn’t have other low power boards to try. Maybe I will try esp8266 later.

Please if anyone finds something wrong with above then please correct it.

Thanks

2 Likes