Model Train Control - ESPHome configuration examples

There is a non linear curve for the voltage control. On step line from 0 to 5V in the first 5% and then a linear line up to the input voltage. One side effect of DRV8871DDA.

Input voltage: 24V DC

Percent	Output Voltage
0	0
10	6,5 V
20	8,6 V
30	10,7 V
40	12,6 V
50	14,6 V
60	16,5 V
70	18,4 V
80	20,1 V
90	22 V
100	24 V

For example, when you need 16V I selected 0,58 (58%) for the voltage_multi parameter.

Templates

Board

The central component for ESPHome usage. This create some internal components with unique IDs. When you stack the boards, you need to add one entry for every board with a unique board number.

Parameter:

• hub_no = every stack get it's unique id
• board_no = every board in the same stack get it's unique id

Usable output IDs like h1b1p1. h = hub, b = board, p = Board Port

packages:
  board1: !include
    file: common/mtc_ha_board.yaml
    vars:
      hub_no: 1
      board_no: 1
      i2c_address: "0x70"
  board2: !include
    file: common/mtc_ha_board.yaml
    vars:
      hub_no: 1
      board_no: 2
      i2c_address: "0x71"

Power line

A simple H-Bridge to control the railway power of the train.

packages:
  train01: !include
    file: common/mtc_ha_power_line.yaml
    vars:
      hub_no: ${hub_no}
      board_no: "1"
      port_no: "01"
      voltage_multi: 0.58

Yield

packages:
  yield01: !include
    file: common/mtc_ha_yield.yaml
    vars:
      hub_no: 1
      board_no: "1"
      port_no: "02"
      voltage_multi: 0.58

Generic Switch

packages:
  switch01: !include
    file: common/mtc_ha_switch.yaml
    vars:
      hub_no: 1
      board_no: "1"
      port_no: "03"
      voltage_multi: 0.58

Signal

packages:
  signal01: !include
    file: common/mtc_ha_signal.yaml
    vars:
      hub_no: 1
      board_no: "1"
      port_no: "04"
      voltage_multi: 0.58

Decoupler

packages:
  decoupler01: !include
    file: common/mtc_ha_decoupler.yaml
    vars:
      hub_no: 1
      board_no: "1"
      port_no: "05"
      voltage_multi: 0.58