BeamMachine22

pi setup

install node-red

bash <(curl -sL https://raw.githubusercontent.com/node-red/linux-installers/master/deb/update-nodejs-and-nodered)

sudo systemctl enable nodered.service

node-red-start

install pigpio:

sudo apt update
sudo apt install pigpio
sudo apt install onoff

install npm packages:

cd ~/.node-red
npm install pigpio

install node-red packages

• node-red-dashboard
• node-red-contrib-loop-processing
• node-red-simple-gate
• git:villagekit/node-red-contrib-countdown

local development

With Node.js > 12 installed (using nvm),

npm install -g node-red

node-red

cd ~/.node-red
npm install node-red-dashboard
npm install node-red-contrib-loop-processing
npm install node-red-simple-gate
npm install git:villagekit/node-red-contrib-countdown

Open http://localhost:1880

Click top right menu > Import > Select a file to import > Import "flows.json"

notes

scripts

The machine code expects the files in ./scripts to be in the pi user's home directory.

cd
mkdir scripts

scp -P 14131 ./scripts/*.(js|json) pi@machine:scripts

cd ./scripts
npm install

pins

https://pinout.xyz/#

• limit switches:
  • gnd: Pin 9
  • x min (right switch from front): Pin 11 / GPIO 17
  • x max: Pin 13 / GPIO 27
  • y min (bottom switch): Pin 15 / GPIO 22
  • 3.3v: Pin 17
  • y max: Pin 19 / GPIO 10
• x motor:
  • pulse +: GPIO 5
  • dir +: GPIO 6
• y motor:
  • up relay: GPIO 23
  • down relay: GPIO 24
• spindle motor:
  • speed up relay: GPIO 8
  • speed down relay: GPIO 25
  • speed off: GPIO 7