3 Arduino Mega Via Max485 Communication
Posted by ardnahc pada 21 Oktober, 2013
I’m wiring 3 arduino mega connected via 3 max485 chip. The arduino is using easytransfer library by bill porter. Much thanks to him making 485 communication much much easier. http://www.billporter.info/
Here is the wiring connection of max 485 chip:
1 RX of each arduino. doesn’t need to be connected for transmitting side of arduino.
2 pin 3 of each max 485 chip
3 pin 2 of each max 485 chip, connected to GND for receiving side, or VCC for transmitting side
4 TX of each arduino. doesn’t need to be connected for receiving side of arduino.
5 VCC (+5V)
6 connected to pin 6 of other max485
7 connected to pin 7 of other max485
when transmitting arduino led blinking, the other receiving arduino led are blinking following the transmitting one.