TekPower TP4000ZC

the TekPower TP4000ZC is a 4000 counts handheld digital multimeter with RS232 connectivity.

Hardware

TODO

Photos

TODO

Protocol

The device periodically sends 14-byte packets at 2400 baud, 8n1. The packet includes a mode indicator, payload and checksum. the payload is a 1-1 mapping of the LCD segments.

Packet structure

Byte	7-4	3	2	1	0
0	0x1
1	0x2
2	0x3
3	0x4
4	0x5
5	0x6
6	0x7
7	0x8
8	0x9
9	0xa
10	0xb
11	0xc
12	0xd
13	0xe

Segment lettering

   |--A--|
   |     |
   F     B
   |     |
   |--G--|
   |     |
   E     C
   |     |
   |--D--|

Resources

• [1] (TODO)