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MDB ESP32 GPS/LTE-M/NB-IoT Cashless Device +SPI -TH
This is an open source project dedicated to implementing the MDB (Multi-Drop Bus) protocol for cashless vending machines, using ESP32 as the main platform and KiCad for PCB design. The MDB protocol is widely used in vending machines for communication between devices, enabling integration with cashless payment systems.
GitHub
https://github.com/nodestark/mdb-esp32-cashless
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Schematic and Layout
Mar 13,2026
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MDB ESP32 GPS/LTE-M/NB-IoT Cashless Device +SPI -TH
Multi-Drop Bus (MDB) Vending Machine Telemetry and Payment Module GPS/LTE-M/NB-IoT +SPI -TH
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Published: Mar 13,2026
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File Last Updated: 2026/03/13 (GMT+8)
File update record
2026-03-1309:31:56
Gerber file is updated.
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Raspberry Pi 5 7 Inch Touch Screen IPS 1024x600 HD LCD HDMI-compatible Display for RPI 4B 3B+ OPI 5 AIDA64 PC Secondary Screen(Without Speaker)
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MDB ESP32 GPS/LTE-M/NB-IoT Cashless Device +SPI -TH
This is an open source project dedicated to implementing the MDB (Multi-Drop Bus) protocol for cashl...
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MDB ESP32 GPS/LTE-M/NB-IoT Cashless Device
This is an open source project dedicated to implementing the MDB (Multi-Drop Bus) protocol for cashl...
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MDB ESP32 Cashless Device
Multi-Drop Bus (MDB) Vending Machine Telemetry and Payment ModuleThis is an open source project dedi...
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