Updated Appendix C: Firmware programming (markdown)

Appendix-C:-Firmware-programming.md

@@ -4,7 +4,7 @@ The Arduino Nano is how you're going to program your Ploopy Mouse, whether you'r
 The Arduino Nano offers a very simple and easy way of programming the microcontroller, which is why we're going to use it. Let's dive in.
 
 ## Step 1: Get the necessary tools
-**TODO PIX**
+
 - The Arduino IDE
 - A base PCB with all components soldered
 - An Arduino Nano
@@ -14,7 +14,6 @@ The Arduino Nano offers a very simple and easy way of programming the microcontr
 - A breadboard
 
 ## Step 2: Hook up the base PCB to the Arduino Nano
-**TODO PIX**
 
 The base PCB has a 6-pin ICSP header. The pins are numbered like this:
 
@@ -80,8 +79,6 @@ If the Arduino IDE reports that you successfully flashed the firmware onto the P
 Plug the electronics assembly into your computer. The buttons should be clicking, and if you hover your finger over the sensor, it should move the cursor.
 
 ## Step 7: All done!
-**TODO PIX completed enclosure halves**
-
 Congrats, you finished flashing the firmware! Give yourself a pat on the back.
 
 You're ready to get on with this thing. Head over to [[2. Electronics assembly]] to continue assembling your Ploopy Mouse.