ESPhome config for SHA2017 badge (https://wiki.sha2017.org/w/Projects:Badge)

shabadge.yaml

esphome:
  name: shabadge

esp32:
  board: esp32-pro

logger:

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_pass

ota:
  password: !secret ota_pass

api:
  id: hassapi
  password: !secret api_pass

i2c:
  sda: 26
  scl: 27
  scan: True

mpr121:
  id: mpr121_component
  address: 0x5A
  touch_debounce: 1
  release_debounce: 1
  touch_threshold: 12
  release_threshold: 6

binary_sensor:
  - platform: mpr121
    id: touch_buttonA
    channel: 0
    name: "Touch Button A"
  - platform: mpr121
    id: touch_buttonB
    channel: 1
    name: "Touch Button B"
  - platform: mpr121
    id: touch_buttonStart
    channel: 2
    name: "Touch Button Start"
  - platform: mpr121
    id: touch_buttonSelect
    channel: 3
    name: "Touch Button Select"
  - platform: mpr121
    id: touch_buttonDown
    channel: 4
    name: "Touch Button Down"
  - platform: mpr121
    id: touch_buttonRight
    channel: 5
    name: "Touch Button Right"
  - platform: mpr121
    id: touch_buttonUp
    channel: 6
    name: "Touch Button Up"
  - platform: mpr121
    id: touch_buttonLeft
    channel: 7
    name: "Touch Button Left"
  - platform: mpr121
    id: charging_status
    channel: 9
    name: "Charging Status"
  - platform: gpio
    name: "Flash Button"
    pin: 0
    filters:
      - invert:

sensor:
  - platform: adc
    pin: 34
    attenuation: 6db
    filters:
      - multiply: 2.91
    name: "USB Voltage"
    update_interval: 20s
    accuracy_decimals: 1
  - platform: adc
    pin: 35
    attenuation: 6db
    #attenuation: 2.5db
    filters:
      - multiply: 2.91
      #- multiply: 1.95
    name: "Battery Voltage"
    update_interval: 20s
    accuracy_decimals: 1
  - platform: uptime
    name: Uptime Sensor
    id: uptime_sensor
    update_interval: 1s
    on_raw_value:
      then:
        - text_sensor.template.publish:
            id: uptime_human
            state: !lambda |-
              int seconds = round(id(uptime_sensor).raw_state);
              int days = seconds / (24 * 3600);
              seconds = seconds % (24 * 3600);
              int hours = seconds / 3600;
              seconds = seconds % 3600;
              int minutes = seconds /  60;
              seconds = seconds % 60;
              return (
                (days ? to_string(days) + "d " : "") +
                (hours ? to_string(hours) + "h " : "") +
                (minutes ? to_string(minutes) + "m " : "") +
                (to_string(seconds) + "s")
              ).c_str();

spi:
  clk_pin: 18
  mosi_pin: 5

text_sensor:
  - platform: version
    id: ver
    hide_timestamp: true
  - platform: template
    name: Uptime Human Readable
    id: uptime_human
    icon: mdi:clock-start

display:
  - platform: waveshare_epaper
    cs_pin: 19
    dc_pin: 21
    busy_pin: 22
    reset_pin: 23
    model: 2.90in-dke
    #Partial not working yet so full only
    full_update_every: 1
    update_interval: 5s
    lambda: |-
      it.printf(0, 0, id(font40), "%s", id(ver).state.c_str());
      it.printf(0, 40, id(font40), "%s", id(uptime_human).state.c_str());
    rotation: 270

external_components:
  - source:
      type: git
      url: https://github.com/Nizzle/esphome
      ref: dke2.9-epaper
    components: [ waveshare_epaper ]

font:
  - file: "Fonts/Comfortaa-Regular.ttf"
    id: font40
    size: 40

@polyfloyd
** Edit: have no been able to get the LED's working (config below)

Haven't been able to get the LEDs working yet, unfortunately.

But for reference to add to @Nizzle his git repository, you can use the buzzer if you ever need to. You'd have to give up the is_charging sensor though (channel 9 on the mpr121), because in esphome the mpr121 touch sensors can only be enabled as a range. And the power to the buzzer is channel 8 which i used as GPIO output, similar as channel 10 (apparantly for enabling the power to the LEDstrip).
You might be able to directly access the GPIO in a switch section, or a button section, but I am not that good in writing yaml. In this way you can use automations in home assistant to trigger the buzzer, or even to trigger it when a sensor is too high, via lambda's independent of home assistant.

the following is the code i used for the buzzer

output:
  - id: buzzer_power
    platform: gpio
    pin:
      mpr121: mpr121_component
      number: 8
      mode: OUTPUT

button:
  - platform: output
    name: buzzer
    output: buzzer_power
    duration: 4000ms
    icon: mdi:vibrate

And this is the correct config for the 6 LED's. i guess there is still something to gain by setting up each led as a separate partition to gain full advantage.

  - platform: neopixelbus
    type: GRBW
    variant: sk6812
    pin: 32
    num_leds: 6
    name: badge_leds