case_relays-v2.md

Overview

Printing

• case frames:
  • ecase-relay.stl - print with 0.2mm or 0.3mm profile with support enforcers on keypad and sensor holes
  • emount.stl - print with 0.2mm or 0.3mm profile

Shopping list

Item	Price
Arduino-Nano	~$2,57
Relay 3ch	~$3,67
Switch-On/Off	~$1,54
PSU-Jack	~$3.20
LM2596-step-down	~$1.44
KF2510 - 2.54mm - 10P	~1.97
KF2510 - 2.54mm - 4P	~$1.39
PSH08-02P / PFH08-02P	~$5,94
PSU 12V3A - minimal	~$16,41
PSU 12V5A - recommended	~$18,78
Fuse-mount	~$0.85
Fuse 3A/4A	~$0.69
M4 - wood screw x 3	~$1.10
M3-6mm x 4	~$1.62
SUM	~$51,45
Weighted SUM	~$52,07

Assembly

• Add Arduino-Nano to case, insert it into notches a slowly push usb connector down. It should be quite tight fit
• Wire up motor power connector with 3ch relay and secure it to case with 1 screws, fix the power connector with super glue
  Arduino + relay

  

• Wire up buck converter and secure it to case with 2 screws
  Buck converter

  

• Mount power switch, fuse holder and power connecter onto frame
• Wire up power switch, fuse holder and power connecter to the rest of the components
  Connectors - back

  

• Prepare panel and sensor connectors
  Connectors - front

  

• Press fit panel and sensor connectors to case and fix them with super glue
  Connectors - mounted

  

• Wire up rest of the electronics as shown in the wiring diagram
• Mount case holder onto table with 3 wood screws
  Mount

  

• Slide case onto mount rails and fix it in plase with 1 screw
  Mounted