![For beginners: How to set up a Raspberry Pi RFID RC522 Reader and record data on IOTA | by Roberto Rey | Coinmonks | Medium For beginners: How to set up a Raspberry Pi RFID RC522 Reader and record data on IOTA | by Roberto Rey | Coinmonks | Medium](https://miro.medium.com/proxy/1*Gyz0Uy1arrsdLMAUsefbIg.jpeg)
For beginners: How to set up a Raspberry Pi RFID RC522 Reader and record data on IOTA | by Roberto Rey | Coinmonks | Medium
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Amazon.com: Ethernet/USB HUB HAT Expansion Board for Raspberry Pi 4B/3B+/3B/2B/Zero/Zero W/Zero WH,with RJ45 10/100M Ethernet Port (Based on RTL8152B Chip) and Three USB Ports,Compatible with USB2.0/1.1 : Electronics
![pi 3 - Unable to read the RS232 attached GPIO pins the same way as USB serial port on Pi3 - Raspberry Pi Stack Exchange pi 3 - Unable to read the RS232 attached GPIO pins the same way as USB serial port on Pi3 - Raspberry Pi Stack Exchange](https://i.stack.imgur.com/JqPA6.jpg)