Update README.md

Author: dl7476

README.md

@@ -20,9 +20,15 @@ this purpose)
 
 ## **Usage**
 - power up the ESP32, after 5 s, the blue LED blinks at 1 Hz, it means that the ESP32 waits for the mode selection coming from the Pythonista program
+![LED](https://user-images.githubusercontent.com/83216773/116789362-c4ef9880-aaae-11eb-8fb3-2407697196d4.jpg)
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 - in the Iphone , go to the wifi configuration panel and choose the relevant Wifi access point (that you have specified at 1) in "preparation" above). Check that the Wifi logo 
   has appeared on the Iphone screen  
 - run the Pythonista program , select the mode, the blue LED of the ESP32 blinks faster (10 Hz) until the intilisation is complete
+![mode-sel](https://user-images.githubusercontent.com/83216773/116789294-780bc200-aaae-11eb-853d-eed033373a6d.jpg)
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 - when the initialisation is complete, the LED remains fixed, the video appears on the Iphone two seconds after 
 - the user can zoom (1 , 1.5, 2, 2.5, 3, whole width), takes a screenshot (files are named screenshot0X.jpg, the previous files are erased) 
 - in RAD mode (RGB), the user can get the temperature through touching the view 
@@ -31,4 +37,7 @@ this purpose)
 - Streaming duration : see remark at 2) above in "preparation"
 - during the video streaming, the user can stop the Pythonista program and run it again but the user has to choose the same mode as initially specified (it is not possible to change the mode during the streaming). If the user wants to switch to a different mode, the ESP32 must be reset (then the blue LED blinks at 1 Hz, etc...) 
 
+![RAD example](https://user-images.githubusercontent.com/83216773/116789243-3844da80-aaae-11eb-87cc-28c435be42d4.jpg)
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