Update README.md

README.md

@@ -55,6 +55,20 @@ http://x.x.x.x/img           Show most recent image saved to sd card
 http://x.x.x.x/img?img=1     Show image number 1 on sd card
 http://x.x.x.x/rgb           Captures an image and converts to RGB data (will not work with the highest 
                              resolution images as there is not enough memory)
+                             
+                             
+GPIO PINS:
+The main io pins available for general use are 13 and 12 (12 must not be high at boot)
+14, 2 & 15 should also be available if you are not using the SD Card
+You can use 1 and 3 if you do not use Serial
+More info: https://randomnerdtutorials.com/esp32-cam-ai-thinker-pinout/
+BTW-You can use an MCP23017 io expander chip on pins 12 and 13 to give you 16 general purpose gpio pins
+Note: If using an sd card you this will normally stop you using pins 12, 13 and the led on 4 
+but if you put it in to 1-bit mode it allows you to carry on using these pins
+The command to use 1-bit mode in the Arduino IDE is:  SD_MMC.begin("/sdcard", true)
+see an example of its use here: https://github.com/alanesq/esp32cam-demo
+pin 16 is used for psram but you may get away with using it as input for a button etc.?
+
 </pre>
 
 ----------------
@@ -73,16 +87,6 @@ https://github.com/alanesq/CameraWifiMotion
 
 I have heard reports of these modules getting very warm when in use although I have not experienced this myself, I suspect it may be when streaming video for long periods?  May be worth bearing in mind.
 
-GPIO PINS:
+
-Main io pins available for general use are 13 and 12 (12 must not be high at boot)
-14, 2 & 15 should also be available if you are not using the SD Card
-You can use 1 and 3 if you do not use Serial
-More info: https://randomnerdtutorials.com/esp32-cam-ai-thinker-pinout/
-BTW-You can use an MCP23017 io expander chip on pins 12 and 13 to give you 16 general purpose gpio pins
-Note: If using an sd card you this will normally stop you using pins 12, 13 and the led on 4 
-but if you put it in to 1-bit mode it allows you to carry on using these pins
-The command to use 1-bit mode in the Arduino IDE is:  SD_MMC.begin("/sdcard", true)
-see an example of its use here: https://github.com/alanesq/esp32cam-demo
-pin 16 is used for psram but you may get away with using it as input for a button etc.?
 
                                                                 https://github.com/alanesq/esp32cam-demo