Add custom PCB information (#46)

* Add EP2220 config template

* Add custom PCB information to documentation

Author: TillFleisch

README.md

@@ -9,10 +9,14 @@ Currently supported Coffee Machine models include:
 |Series 2200| `EP2220`, `EP2235`  |
 |Series 3200| `EP3243`, `EP3246`  |
 
+My modified `EP2220`:
+![Modified Coffee Machine](images/machine_inside.jpg)
+More information about the PCB used in this image is available [here](#custom-pcb).
+
 This component provides a `Power Switch`, a `Status sensor` and various `Buttons` which simulate user input as well as a `Number` component to customize beverage settings such as size and strength.
 The `Power Switch` can be used to turn on the coffee machine with and without a cleaning cycle during startup.
 
-![Provided entities in HomeAssistant](ha_entities.png)
+![Provided entities in HomeAssistant](images/ha_entities.png)
 
 You might break/brick your coffee machine by modifying it in any way, shape or form. If you want to use this component, do so at your own risk.
 
@@ -104,8 +108,8 @@ The RX/TX lines are piped through the ESP such that messages can be read, interc
 
 When injecting a 'turn coffee machine on' command, the coffee machine does turn on, but the display unit does not. To circumvent this behavior we can re-boot the display unit by temporarily removing it's power. Thus the display will power on and operate normally. To perform this operation a transistor or MOSFET can be used.
 
-The following wiring guideline can be used to add a Wemos D1 Mini to the coffee machine. **The unlabeled wires should be connected without changes.**
-![Wiring guide](wiring.png)
+The following wiring guideline can be used to add a Wemos D1 Mini to the coffee machine. **The unlabeled wires should be connected without changes.** More schematics are available [here](#custom-pcb).
+![Wiring guide](images/wiring.png)
 
 The ribbon cable wires have the following functionalities.
 
@@ -124,6 +128,17 @@ The ribbon cable wires have the following functionalities.
 
 The Wemos D1 Mini has a built in Voltage regulator, thus connecting it to the 5V provided by the mainboard is no problem. If you use a different ESP Module/Board please make sure it is 5V tolerant or use a Voltage regulator. Otherwise you might release magic smoke.
 
+# Custom PCB
+
+This project has convinced me to design my first PCB (printed circuit board). This rather simple ESP8266-12F-based design was inspired by the Wemos D1 Mini, which I was using previously.
+When using this PCB the ribbon cable connecting the mainboard to the display must not be cut in half and no soldering is required.
+
+![PCB Front side](images/pcb.jpg)
+
+The Schematics, PCB Layout and BOM are available [here on oshwlab.com](https://oshwlab.com/tillf/philips-smart-coffee-pcb) and an accompanying 3D-printable case for the small PCB is available [here on printables.com](https://www.printables.com/model/826691-smart-coffee-pcb-case). The SMD components were chosen such that they can still be hand-soldered without a hot-air station or reflow oven, given a little experience. Since this is my first design there may be mistakes and things that could be optimized. Everything is provided as is, without warranty or liability of any kind.
+
+There are also other PCB designs like [this one](https://oshwlab.com/tradstaat/coffeepcb) which relies on using a Wemos D1 Mini and does not require soldering SMD components.
+
 # Communication protocol
 
 More information on the communication protocol used by this component can be found [here](protocol.md).

ha_entities.png

@@ -0,0 +1,121 @@
+substitutions:
+  name: "philips-coffee-machine"
+  friendly_name: "Coffee Machine"
+
+esphome:
+  name: "${name}"
+  friendly_name: "${friendly_name}"
+  name_add_mac_suffix: true
+
+  project:
+    name: TillFleisch.ESPHome-Philips-Smart-Coffee
+    version: "1.0"
+
+esp8266:
+  board: esp12e
+
+dashboard_import:
+  package_import_url: github://TillFleisch/ESPHome-Philips-Smart-Coffee/templates/Philips_EP2220.yaml@main
+
+logger:
+  baud_rate: 0
+
+api:
+
+ota:
+
+wifi:
+  ap:
+
+captive_portal:
+
+external_components:
+  - source: github://TillFleisch/ESPHome-Philips-Smart-Coffee@main
+
+uart:
+  # UART connected to the mainboard
+  - tx_pin: GPIO1
+    rx_pin: GPIO3
+    baud_rate: 115200
+    id: uart_mainboard
+
+  # UART connected to the display
+  - tx_pin: GPIO15
+    rx_pin: GPIO13
+    baud_rate: 115200
+    id: uart_display
+
+philips_coffee_machine:
+  display_uart: uart_display
+  mainboard_uart: uart_mainboard
+  power_pin: GPIO12
+  id: coffee_machine
+  language: en-US
+
+text_sensor:
+  - platform: philips_coffee_machine
+    controller_id: coffee_machine
+    id: status
+    name: "Status"
+
+switch:
+  - platform: philips_coffee_machine
+    controller_id: coffee_machine
+    name: "Power"
+    icon: mdi:coffee-maker
+
+button:
+  - platform: philips_coffee_machine
+    controller_id: coffee_machine
+    action: SELECT_COFFEE
+    name: "Select Coffee"
+    icon: mdi:coffee
+
+  - platform: philips_coffee_machine
+    controller_id: coffee_machine
+    action: SELECT_ESPRESSO
+    name: "Select Espresso"
+    icon: mdi:coffee
+
+  - platform: philips_coffee_machine
+    controller_id: coffee_machine
+    action: SELECT_HOT_WATER
+    name: "Select Hot Water"
+    icon: mdi:tea
+
+  - platform: philips_coffee_machine
+    controller_id: coffee_machine
+    action: SELECT_STEAM
+    name: "Select Steam"
+    icon: mdi:heat-wave
+
+  - platform: philips_coffee_machine
+    controller_id: coffee_machine
+    action: MAKE_COFFEE
+    name: "Make Coffee"
+    icon: mdi:coffee
+
+  - platform: philips_coffee_machine
+    controller_id: coffee_machine
+    action: MAKE_ESPRESSO
+    name: "Make Espresso"
+    icon: mdi:coffee
+
+  - platform: philips_coffee_machine
+    controller_id: coffee_machine
+    action: PLAY_PAUSE
+    name: "Select play/pause"
+    icon: mdi:play-pause
+
+number:
+  - platform: philips_coffee_machine
+    type: bean
+    controller_id: coffee_machine
+    status_sensor_id: status
+    name: "Beverage Strength"
+
+  - platform: philips_coffee_machine
+    type: size
+    controller_id: coffee_machine
+    status_sensor_id: status
+    name: "Beverage Size"