Merge pull request #22 from bofh69/improve-sketch-docs

Add link to and image of case

Author: bofh69

sketch/README.md

@@ -17,6 +17,20 @@ firmware that interfaces with the NXP PN5180 NFC module.
 My terrible prototype board:
 ![Board](board.jpg)
 
+## Printed case
+I've made a simple 3D printable case for it
+[here](https://www.printables.com/model/1545289-pn5180-tagomatic-case).
+The OnShape model is linked from there.
+
+![The case](case.jpg)
+
+The case is designed to mount on the backside of my Voron 2.4.
+It should fit other printers with 2020 frames as well.
+
+The lower lip can be cut off, and optionally the screw hole can be
+filled, in the slicer and it can work as a simple,
+freestanding case too.
+
 ## Pin Connections
 
 | PN5180 Pin | Raspberry Pi Pico Zero Pin |
@@ -50,46 +64,40 @@ of the PN5180. I've not implemented that, and I probably won't.
 ### Prerequisites
 
 The firmware requires the FastLED and SimpleRPC libraries.
-Install them using one of these methods:
 
-**Arduino IDE:**
-1. Go to Sketch > Include Library > Manage Libraries
-2. Search for the libraries and install them.
-
-**Arduino CLI:**
-```bash
-arduino-cli lib install simpleRPC
-arduino-cli lib install FastLED
-```
 
 ### Using Arduino IDE
 
 1. Install the Arduino IDE
 2. Add Raspberry Pi Pico board support:
    - Go to Tools > Board > Board Manager
    - Search for "pico" and install "Arduino Mbed OS RP2040 Boards by Arduino" (version 4.4.1 was used).
-3. Install the libraries (see Prerequisites above)
+3. Install the libraries:
+  - Go to Sketch > Include Library > Manage Libraries
+  - Search for the libraries and install them.
 4. Press the select board pulldown: "Select Other Board and Port"
 5. Search for pico, choose "Raspberry Pi Pico"
 5. Select Port: Tools > Port > (your Pico's port)
 6. Upload the sketch (the arrow)
 
 ### Using Arduino CLI
 
-This is untested...
-
 ```bash
-# Install board support
+arduino-cli config init
+arduino-cli core update-index
 arduino-cli core install arduino:mbed_rp2040
 
+
 # Install the libraries, see [Prerequisites]:
-arduino-cli lib install ...
+arduino-cli lib install FastLED
+arduino-cli lib install simpleRPC
 
 # Compile
-arduino-cli compile --fqbn arduino:mbed_rp2040:pico sketch/pn5180_reader
+arduino-cli compile -e --fqbn arduino:mbed_rp2040:pico sketch/pn5180_reader
 
 # Upload (replace /dev/ttyACM0 with your port)
 arduino-cli upload -p /dev/ttyACM0 --fqbn arduino:mbed_rp2040:pico sketch/pn5180_reader
+# (or copy the uf2 file to the bootloader's drive)
 ```
 
 ## Protocol