ESPHome PCA9685 servo angle range problem

ESPHome
1

I’m trying to control a number of servos using a PCA9685 connected to a Wemos D1 mini. The servos appear correctly in home assistant and I can move them however I’m having a problem with the range of angle movement. The servos are capable of 180 degree movement. ESPHome gives me 0 to 100%. Setting the input to 0% sets the servo at about 30deg. Moving to 100% gives me about 120 deg.

I’ve used the PCA and servos with an arduino and they work ok. How do I get 0 to 180 deg movement?

i2c:
- id: bus_a
  sda: GPIO4
  scl: GPIO5
  scan: true
  #frequency: 10000

pca9685:
  id: pca9685_1
  i2c_id: bus_a
  address: 0x40
  frequency: 50

output:
  - platform: pca9685 #Ch1
    id: 'pca_channel1'
    channel: 1

servo:
  - id: my_servo_1
    output: pca_channel1

number:
  - platform: template
    name: Spare_1
    id: servo1
    min_value: 0
    restore_value: False
    max_value: 100
    optimistic: true
    step: 1
    set_action:
      then:
        - servo.write:
            id: my_servo_1
            level: !lambda 'return x / 100.0;'
2

-100% to 100% is the actual input range. Plus, you can tweak the min/max per the docs’

3

120-30=90, half range on positive values. Another half you find with negative values. And adjust your servo horn to get 90deg at zero.