Update README.md

README.md

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-# ESP32_TFT_Combiner
-A PCB making it easy to combine an ESP32 and a TFT Touchsceen.
+# ESP32 TFT Combiner
+A PCB making it easy to combine an ESP32 and a TFT Touchsceen. This PCB is designed to work with https://github.com/DustinWatts/FreeTouchDeck It is made especially for the 38-pin ESP32 DevKitC.
+
+An extra row of headers can be placed next to the ESP32 to be able to access all GPIOs. Of course you can also use it for other projects.
+
+# These are the connections used by the TFT and SD card:
+
+![](http://dustinwatts.nl/esp32_tft_combiner/tft_combiner_pins.png)
+
+All other pins are not used by the ESP32 TFT Combiner and can be used freely.