Add Phidget22 compilation instructions into the Readme instead of depending on phidgets.com

README.md

@@ -94,7 +94,24 @@ ln -s phidget-plot ~/.local/bin/phidget-plot
 ### Dependencies
 #### `phidget-rec`
 - `python3`
-- Phidget libraries: follow "[Part 1](https://www.phidgets.com/?tier=3&catid=14&pcid=12&prodid=120R0)" instructions from the official website
+- Phidget libraries: follow "[Part 1](https://www.phidgets.com/?tier=3&catid=14&pcid=12&prodid=120R0)" instructions from the official website:
+  * Install dependencies from your package manager, *e.g.*:
+
+  	`sudo apt install wget gcc make libusb-1.0-0-dev` (Debian)
+  	`sudo eopkg it wget gcc make libsusb-devel` (Solus)
+
+  * Donwload, unpack and install the Phidget library:
+
+  	```bash
+  	wget https://www.phidgets.com/downloads/phidget22/libraries/linux/libphidget22.tar.gz -O /tmp/libphidget22.tar.gz
+  	tar xvzf /tmp/libphidget22.tar.gz
+  	cd /tmp/libphdget22-*
+	./configure
+	make
+	sudo make install
+	```
+
+  * A backup version of `libphidget22.tar.gz` is provided in this repository in case the original source becomes obsolete in the future.
 - `Phidget22` Python library: `pip3 install Phidget22`
 
 #### `phidget-plot`