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RS232-Mdb Raspberry Pi to Mdb, Connect Raspberry Pi RS232 to Vending Machine - China RS232-Mdb and Pi2mdb price | Made-in-China.com
GitHub - pubnub/workshop-raspberrypi: IoT Hands On Workshop: Build a Realtime App with Raspberry Pi 2 and PubNub. Demo Web ->
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New 2020 Raspberry pi version MDB-RS232 device to convert the MDB coin and bill validator data to PC RS232 for Vending machine - AliExpress
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