PCB image added

diff --git a/README.md b/README.md
index 00c3cea2a948265387282047ca91198c020e7043..792ec5512426c5531e4c9caf0d3a1a039de6c7b8 100644 (file)
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ Compiled and tested on AVR Atmega 168 (Arduino Diecimila)
     ./make
     ./flash
 
-Testing
+## Testing
 
     screen <path to your device> 9600
 
@@ -29,6 +29,8 @@ 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)