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Hardware Components

The CS Library Kiosk requires the following hardware components for deployment:

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Required Components

Raspberry Pi 5

4GB RAM minimum for optimal performance

7-inch Touchscreen

Official Raspberry Pi touchscreen display

USB Barcode Scanner

Compatible with both ISBN and student ID barcodes

UPS (Uninterruptible Power Supply)

For graceful shutdown during power interruptions

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Optional Components

  • Receipt Printer: For printing transaction records
  • External USB Storage: For additional backup capacity
  • Ethernet Cable: For stable network connectivity
The system is designed to use a single USB barcode scanner for both student IDs and book ISBNs to simplify user interaction.

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Hardware Assembly

1

Prepare the Raspberry Pi 5

Ensure you have a Raspberry Pi 5 with at least 4GB RAM. The system is optimized for this hardware platform.
2

Connect the Touchscreen Display

Attach the official 7-inch Raspberry Pi touchscreen display:
  • Connect the display ribbon cable to the DSI port on the Raspberry Pi
  • Secure the display mounting bracket if using an enclosure
  • Power the display through the appropriate power connection
Ensure the Raspberry Pi is powered off when connecting the display ribbon cable to prevent damage.
3

Connect the USB Barcode Scanner

Plug the USB barcode scanner into one of the Raspberry Pi’s USB ports. The scanner should be recognized as a keyboard input device.Test the scanner by opening a text editor and scanning a barcode - the numbers should appear as typed input.
4

Set Up the UPS

Connect the Raspberry Pi power supply through the UPS:
  • Plug the Raspberry Pi power adapter into the UPS output
  • Connect the UPS to the wall outlet
  • Configure the UPS to provide at least 5-10 minutes of backup power
This ensures graceful shutdown during power outages and protects against SD card corruption.
5

Network Connection (Optional but Recommended)

For optimal stability and Open Library API access:
  • Connect an Ethernet cable from the Raspberry Pi to your network switch
  • Alternatively, configure WiFi during OS setup
  • Ensure the network allows outbound HTTPS connections for API calls

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Physical Installation

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Location Requirements

Based on the site survey of the CS Lounge:
  • Sufficient space available for kiosk placement
  • Ethernet port accessible for wired connection
  • Close proximity to the library bookshelf
  • Power outlet available for UPS connection

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Mounting and Positioning

  1. Position the kiosk at a comfortable height for touchscreen interaction (typically 36-42 inches from floor)
  2. Secure the Raspberry Pi in a protective enclosure to prevent physical tampering
  3. Position the barcode scanner within easy reach, either mounted or on a flexible stand
  4. Ensure adequate ventilation around the Raspberry Pi to prevent overheating
Implement physical security measures for the Raspberry Pi unit to prevent theft or unauthorized access to the hardware.

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Performance Specifications

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Expected Performance Metrics

MetricTarget
System Boot Time< 60 seconds to ready state
Checkout/Return Transaction< 3 seconds
Search Results Display< 2 seconds
Concurrent Users (Peak)5+ users
Uptime During Operating Hours99% (8 AM - 10 PM)

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Hardware Validation

After assembly, verify the following:
1

Power On Test

Boot the Raspberry Pi and verify:
  • Display shows boot sequence
  • System completes boot within 60 seconds
  • Touchscreen responds to input
2

Scanner Test

  • Scan a test ISBN barcode
  • Verify barcode data is captured correctly
  • Test with both book ISBNs and student ID formats
3

Network Connectivity

  • Verify internet connection is established
  • Test API connectivity to openlibrary.org
  • Confirm local network access if using MySQL over network
4

UPS Functionality

  • Disconnect wall power while system is running
  • Verify UPS provides continuous power
  • Test graceful shutdown procedure if needed

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Troubleshooting Common Hardware Issues

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Display Not Working

  • Check DSI ribbon cable connection
  • Verify display power connection
  • Check /boot/config.txt for display settings

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Barcode Scanner Not Recognized

# List USB devices to verify scanner is detected
lsusb

# Check input devices
ls /dev/input/

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System Overheating

  • Ensure adequate ventilation around Raspberry Pi
  • Consider adding a heatsink or small fan
  • Monitor temperature:
vcgencmd measure_temp

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Network Connectivity Issues

# Check network interfaces
ip addr show

# Test internet connectivity
ping -c 4 8.8.8.8

# Test DNS resolution
ping -c 4 openlibrary.org

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Next Steps

Once hardware is assembled and validated, proceed to:

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