PCB image added

[LED tetris] / README.md

diff --git a/README.md b/README.md
index cd24ca9f1386fc0978162bec9ec3d8152ac11b42..1caa8fa400d504c4eed53b1f8e1a739f0d90c32b 100644 (file)
--- a/README.md
+++ b/README.md
@@ -18,15 +18,19 @@ Compiled and tested on AVR Atmega 168 (Arduino Diecimila)
     ./make
     ./flash
 
-Testing
+## Testing
 
     screen <path to your device> 9600
 
+Use arrow keys to play
+
 Read wiki for details
 
 - [How to compile and flash](https://wiki.interplaymedium.org/index.php/InterplayMedium/LEDTetris) it with Arduino
 - [General instruction](http://wiki.interplaymedium.org/index.php/InterplayMedium/AxonAmpArduino) for Adruino + IM AXOD microserver integration
 
+![MAX7219 IC driver, LED matrix PCB](https://repository.interplaymedium.org/AVR-LED-Tetris/LED_matrix_pcb.jpeg)
+
 ## Extras 
 
 Please find mask template + nice stickers [here](https://repository.interplaymedium.org/AVR-LED-Tetris/cover.svg)