DIY Vending Machine

Basics

• Raspberry Pi 5
  • dotnet 10
  • chromium (kiosk mode)
  • Additional libraries
• Standard equipment rack
• Misc. hardware
• Custom sheet metal Shelves and dividers
• Use of DIN Rail for key component mounting.
  • Power 12v for motors, 5v for PI
  • Breaker/switch
  • Din Rail on back of shelf for adjustable motor positioning.
• Vending Spiral motors
  • https://a.co/d/016Zia8p
  • https://a.co/d/0eEZmErj
• Concept using inexpensive standard equipment rack
  • https://www.vevor.com/server-rack-c_10750/vevor-10u-open-frame-network-rack-wall-mounted-server-rack-4-post-with-shelves-p_010932903892
• Barcode scanner
  • https://www.aliexpress.us/item/3256808498543619.html?spm=a2g0o.order_detail.order_detail_item.3.6dc8f19cNLnaa0
  • 3D Printed custom mounts
• Relay and Sensor for motors, and other items for PI system
  • https://sequentmicrosystems.com/products/four-relays-four-inputs-for-raspberry-pi
  • https://sequentmicrosystems.com/products/super-watchdog-hat-with-battery-backup-for-raspberry-pi
  • https://sequentmicrosystems.com/products/din-rail-kit-perpendicular-for-raspberry-pi
  • Other accessories from SequentMicroSystems
  • Various monting hardware

General Architecture

• dotnet web application running on PI Touch screen
• Postgress database, making unit standalone
• Barcode scanner to scan various ID forms
• Relay driven activation of dispensing motors
• WIFI hotspot for local administration, configurations, and usage data downloads.

Checkpoints of build progress

Checkpoint 1

Here is a quick video of the first checkpoint.

• https://youtube.com/shorts/rF5DmClw5Zs?si=EiYUYnB5nRpxue6H

Checkpoint 2

A pic of the 3d printed motor mounts on din rail.