Update Readme

README.md

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 ESPHome powered switch to turn on/off your PC.
 
+Just connect your power and reset front panel connector to appropieate pin pairs, power the ESP8266 and you can turn on and off your PC via home assistant.
+
+## Use cases
+
+- This can enbale voice commands via Google Home.
+- Hide your PC in a closet or on a shelf without the need to press the actual button. Your can just connect any other button via home assistant
+- Setup automation based on time, motion or the moon phase to power on your PC
+- No funky magic packets anymore with wake on LAN (never worked for me)
+- No addons with password access to your Windows PC
+
+## Powersource
+
+### Internal USB port
+Most motherboard can deliver power over USB when the PC is off.
+Needs to be configure in the BIOS.
+
+### TPM header
+
+Check your motherboard manual for a TPM header.
+Also check how much voltage the TPM header can supply.
+Then you can connect power and groud from the TPM header to the ESP8266
+
 
 ![Prototype](images/prototype.jpg)
 
@@ -10,3 +32,15 @@ ESPHome powered switch to turn on/off your PC.
 - Optocoupler: EL817
 - Resistor: 
 - ESP8266-12F from AZDelivery
+
+## Todo
+
+- [x] powering the ESP8266
+- [x] Power, reset and hard power off switch for PC in Home Assistant
+- [x] Protoype on breadboard
+- [x] Create first soldered protoype
+- [ ] Check for PC status (is the PC currently on or off?) Current design is a power a power toggle
+- [ ] Design PCB
+- [ ] upload PCB
+- [ ] Create 3D printed case
+- [ ] Maybe enable MQTT to control this device (without home assistant)