This is a video tutorial explaining how to create an "X-Ray Scanner" electronic prop for an escape room. Players place items into a large slot, and the monitor above displays an image showing their internal contents!

It uses a R200 UHF RFID reader to detect the item that has been inserted into the scanner. Unlike common MFCR522, PN532, or PN5180-based readers, this is a EPC Gen2 reader which uses the ISO18000 protocol. As such, it has a much greater read range - able to detect a tag at a distance of one metre or more.
The EPC code of the RFID tag placed on each object is read by an ESP32 microcontroller via a UART serial interface. The ESP32 then sends a command to a Sprite media player to display an accompanying image/video file on the monitor.

Hardware Used:
- R200 RFID Reader ( + antenna), ~£40, https://www.aliexpress.com/item/40002...
- ESP32 (+ breakout shield) ~£4, https://www.aliexpress.com/item/10050...
- Sprite Media Player, ~£100, https://garlanddigital.co.uk/medeawiz...

00:00:00 - 00:01:15 Introduction and demonstration
00:01:16 - 00:01:43 Hardware overview
00:01:44 - 00:04:59 RFID comparison: ISO14443, ISO15693, IS018000
00:05:00 - 00:09:34 Hardware setup
00:09:35 - 00:12:03 Wiring diagram
00:12:04 - 00:31:02 Arduino IDE code
00:31:03 - 00:32:25 R200 RFID range test
00:32:26 - 00:33:50 Wrapup

To download the code listing and other resources for this, or any of my other #escaperoom projects, please see   / playfultech