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Cubean

Cubean TX Protocol (Controller → Roaster)

  • Direction: Arduino/controller → Cubean roaster

  • Rate: 9600 baud, 8 data bits, no parity, 1 stop bit (SERIAL_8N1)

  • Interval: Sent every ~200ms

  • Packet Length: 11 bytes

  • Structure:

Byte Index Hex Meaning
0 FE Start byte 1
1 EF Start byte 2
2 00 Unused/reserved
3 00 Unused/reserved
4 5A Drum/Cooler/Fan state (bitfield?)
5 64 Heat power (0–100 decimal)
6 02 Unknown, possibly a mode ID
7 76 Fan speed (0–255 scale)
8 AA Marker
9 55 Marker
10 22 Checksum or end byte

Cubean RX Protocol (Roaster → Controller)

  • Direction: Cubean roaster → Arduino/controller

  • Rate: Same UART config: 9600 baud, SERIAL_8N1

  • Interval: ~200ms

  • Packet Length: 11 bytes

  • Structure:

Byte Index Hex Meaning
0 FE Start byte 1
1 EF Start byte 2
2 0X Temperature high nibble (BCD/hex?)
3 YY Temperature low nibble
4 00 Unknown
5 00 Unknown
6 00 Possibly status byte
7 00 Possibly another status byte
8 AA Marker
9 55 Marker
10 XX Checksum or data byte