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Post by Admin on Mar 20, 2019 12:09:08 GMT
Currently I am looking for an I2C RFID board where the I2C address can be changed. My idea is to connect two I2C buses to an STM32F103 and scan attached RFID devices to detect trains passing over the RFID detectors. This would allow up to 256 RFID locators under the base board.
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Post by grimble741 on May 18, 2020 18:12:17 GMT
HI I tried to reply before but I dont think it went. You could achieve the multi- address I2c RFID system by using a PCA9548A I2C multiplexer. This has one I2c input set , switched to 8 output sets, under I2c control. So you can have multiple devices. a board with RFID chip OR even better, a decent MFRC522 board can have up to 6 addresses so up to 64 addresses all on its own. This one has address pads underneath Keep Well. John Stephenson |
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Post by LC-DCC Designer on May 19, 2020 18:03:29 GMT
Thanks John this is just what I have been looking for. Now I can start trying my train location system for real.
Regards John
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Post by Ashio86 on Jan 20, 2021 10:56:33 GMT
How did you guys get on with this? Sounds like an interesting addition that would save me having to use a velcro based labelling system for the hidden storage yard.
Cheers,
Ash
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Post by LC-DCC Designer on Jan 20, 2021 13:57:15 GMT
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Post by Admin on Mar 2, 2021 20:38:13 GMT
I am now considering using the Raspberry Pi Pico board for the RFID processor. It has more capability than the STM32F103 board.
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