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The Surajkund Fair (Smart Craft Fair Budgeting & Billing Terminal)

Source:

Manage a craft stall budget at Haryana's famous Surajkund Fair. Scan NFC craft items (Clay Pot ₹45, Wooden Toy ₹120, Madhubani Painting ₹250). The smart terminal tracks remaining budget ₹500 and prints mini receipts.

Categorisation

Props & Materials Required

  • •Craft item models with NFC tags (Pottery, Wooden Toys, Handloom, Paintings)
  • •Play budget notes (₹500 budget allowance)
  • •ESP32 controller board
  • •PN532 NFC reader module
  • •Thermal receipt printer module / OLED receipt screen
  • •DFPlayer Mini MP3 module + 3W speaker

Step-by-Step Instructions

1

Set Fair Budget Allowance

Start with a total budget allowance of ₹500. Display shows 'Budget: ₹500'.

2

Select Craft Items to Buy

Pick a Clay Pot (₹45) and Wooden Toy (₹120). Scan both NFC tags on the terminal.

3

Check Total & Remaining Budget

Terminal adds ₹45 + ₹120 = ₹165. Speaker announces: 'Total spent: ₹165. Remaining budget: ₹335!'

4

Over-Budget Warning Alert

Try scanning a Madhubani Painting (₹350). Remaining ₹335 is not enough! Red light flashes + Speaker alerts: 'Budget Exceeded by ₹15! Choose a cheaper craft!'

Why It Works & Notes

The Surajkund Fair theme integrates Indian traditional crafts with financial literacy. Managing a fixed budget (₹500) while selecting multiple items forces children to estimate costs and perform multi-step subtraction.