updated systemd-service and readme

README.md

@@ -10,7 +10,11 @@ control your blinkstick via http requests
 
 **the node-hid module is a bit picky about node.js's version - use node.js 8.x or 15.x**
 
-## setup 
+## setup (as root)
+
+- install nvm  
+
+- to load nvm restart your terminal or `source ~/.nvm/nvm.sh`
 
 - clone the project (to '/opt/blinky')  
 `git clone https://git.velvettear.de/velvettear/blinky.git /opt/blinky`
@@ -30,14 +34,26 @@ control your blinkstick via http requests
 - execute blinky  
 `nvm run 15 blinky.js`
 
+- if you get this error message on linux:  
+`Error: cannot open device with path /dev/hidraw0`  
+run:  
+`echo "KERNEL==\"hidraw*\", SUBSYSTEM==\"hidraw\", ATTRS{idVendor}==\"20a0\", ATTRS{idProduct}==\"41e5\", MODE=\"0666\"" | sudo tee /etc/udev/rules.d/85-blinkstick-hid.rules`  
+and reboot your system
+
+
+
 ## systemd
 
 **for security reasons it is highly recommended to not run blinky with root permissions!**
 
 - create a new system user  
-`useradd -r -s /usr/bin/nologin blinky`
+`useradd -U -r -s /usr/bin/nologin node`
 
-- symlink the provided systemd-service file and modify it according to your needs  
+- make your install of nvm available to the new user  
+`cp -R ~/.nvm /opt/nvm`  
+`chown -R node /opt/nvm`
+
+- symlink the provided systemd-service file  
 `ln -s /opt/blinky/blinky.service /etc/systemd/system/blinky.service`
 
 - reload systemd-services  
@@ -46,6 +62,10 @@ control your blinkstick via http requests
 - enable and start blinky as a systemd-service  
 `systemctl enable --now blinky`
 
+- if you don't use nvm otherwise remove it and remove it from your shell-profile  
+`rm -rf ~/.nvm`  
+`vim ~/.zshrc` 
+
 ### scripts
 
 - blinky-feed.sh 

blinky.service

@@ -3,9 +3,10 @@ Description=blinky (blinkstick controller)
 
 [Service]
 Type=simple
-User=blinky
+User=node
-Group=blinky
+Group=node
-ExecStart=nvm run 15 /opt/blinky/blinky.js
+WorkingDirectory=/opt/blinky
+ExecStart=/opt/nvm/nvm-exec node blinky.js
 
 [Install]
 WantedBy=multi-user.target