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updated readme

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Philip Johansson 2020-07-05 13:57:57 +02:00
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README.md
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@ -8,17 +8,15 @@ An esp8266 powered **IKEA Tvärfot** with a Neopixel ring and a proximity sensor
![](https://external-content.duckduckgo.com/iu/?u=https%3A%2F%2Fwww.ikea.com%2Fbe%2Ffr%2Fimages%2Fproducts%2Ftvaerfot-table-lamp-black-white__0772756_PE756088_S5.JPG%3Ff%3Dxxs&f=1&nofb=1)
## Writing a configuration
### LED strip
## LED strip
A NeoPixel strip with 7 diods is used for the light and connects to **D8**. This could really be any DIO. For this change the variable ***ledPin*** in ***main.cpp***.
To power the LED strip connect it to the 5V supply. The power output on the ESP8266 may not be enough if connected to the *raw* pin when powering from the USB port. The recommendation is to power it in parallel to the ESP by e.g. supplying the ESP with power on the raw pin while using the same for powering the LED.
### Distance Sensor
## Distance Sensor
To measure the distance an IR based sensor from Sharp (2Y0A21) is used. This sensor is connected to the analog input **A0**. This is the only analog input on the ESP8266.
To power the Sharp sensor connect it to any free 3.3V pin on the ESP.
### Configuration
## Writing a configuration
Open a Serial Monitor at baudrate 9600 and paste the following json configuration adapted to your needs.
Before sending press the on board button "flash" or connect a button to D0. You will now have 10s to send the configuration. The onboard LED will light up as long as the board reads Serial input. If successful the new configuration should be shown in the terminal.