RS485 auto board 1
Board Features
- TXD / RXD data indicator LEDs
- Power LED
- Working voltage 5V, 3.3V may NOT work
- Audo direction
- Fine protections for most cases
- Output 3-pin headers, pitch compatible 3.5mm/5mm
- 120R end terminal resistor
Pin Definitions
Left Side Pins
- A (not mark)
- 5V
- RXD
- TXD
- GND
- B (not mark)
Right Side Pins
- A
- B
- GND
On board Protections
- TVS
- Fuse
- Lightning protection
schematic
ref
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demo video and other protocols documentation please see here interface-dat
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demo video 2 in telegram - https://t.me/electrodragon3/232