| PIN | FUN |
|---|---|
| 1 | 5V |
| 2 | GND |
| 3 | RX |
| 4 | TX |
| 5 | oin20 |
| 6 | - |
| 7 | swim |
| 8 | rst |
baud-rate: 9600
9B,04,15,BF,C2,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,04,15,BF,C2,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,07,12,07,CF,6F,A5,30,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,04,15,BF,C2,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,04,15,BF,C2,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,07,12,07,CF,7D,A8,B0,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,04,15,BF,C2,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,07,12,07,CF,66,A3,F0,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,04,15,BF,C2,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,04,15,BF,C2,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,07,12,07,CF,4F,7D,31,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,04,15,BF,C2,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,04,15,BF,C2,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,04,15,BF,C2,9D,9B,07,12,07,CF,06,8B,F0,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,04,15,BF,C2,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,07,12,07,DB,6F,A5,3F,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,04,15,BF,C2,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,04,15,BF,C2,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,07,12,07,DB,7D,A8,BF,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,04,15,BF,C2,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,04,15,BF,C2,9D,9B,07,12,07,DB,6D,64,BE,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,04,15,BF,C2,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,04,15,BF,C2,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,07,12,07,DB,4F,7D,3E,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,04,15,BF,C2,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,04,15,BF,C2,9D,9B,07,12,07,DB,06,8B,FF,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,04,15,BF,C2,9D,9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D,9B,04,11,7C,C3,9D
0x9B, 0x06, 0x02, 0x02, 0x00, 0x0C, 0xA0, 0x9D //DOWN
0x9B, 0x06, 0x02, 0x01, 0x00, 0xFC, 0xA0, 0x9D //UP
0x9B, 0x06, 0x02, 0x00, 0x00, 0x6C, 0xA1, 0x9D //VOID
packet-structure:
| Start | LEN (including LEN) | DATA | STOP |
|---|---|---|---|
| 9B | 04 | 15,BF,C2 | 9D |
9B,04,11,7C,C3,9D
9B,04,15,BF,C2,9D
9B,06,02,00,00,6C,A1,9D //TX
9B,07,12,07,CF,06,8B,F0,9D
9B,07,12,07,CF,4F,7D,31,9D
9B,07,12,07,CF,66,A3,F0,9D
9B,07,12,07,CF,6F,A5,30,9D
9B,07,12,07,CF,7D,A8,B0,9D
9B,07,12,07,DB,06,8B,FF,9D
9B,07,12,07,DB,6D,64,BE,9D
9B,07,12,07,DB,6F,A5,3F,9D
9B,07,12,07,DB,4F,7D,3E,9D
9B,07,12,07,DB,7D,A8,BF,9D
When we look at the conroller board we can identify a TM1650 LED controller. When looking at its datasheet we can see how stuff works. Turns out the desk sends exactly what to display as raw bytes. Now we can decode this information (take a look at the python example) to get the displayed height. Taddaaaaa.
Shoutout to @dev-manuel for being apart of this journey. 👍
Make sure to have a look at the utilities created alongside this project.