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LanguidSmartass / mdb-arduino-cashless

MDB Cashless Device implementation based on Arduino Uno and GPRS Shield
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Arduino pin RX TX to MDB #20

Closed bangjii closed 2 years ago

bangjii commented 2 years ago

I'm so sorry for my newbie experience in C++ AVR syntax, i want to ask which pin do you use to connect from arduino to MDB RX TX vending machine? Is it pin 0 and 1 (serial that using for programming)? Ps i'm using Arduino MEGA2560.

LanguidSmartass commented 2 years ago

Please find and read the MDB interface description. You do not connect MCU pins directly to MDB bus, you must use an optocoupler for each transmission line.

There are also articles on the net on this subject which you can easily find.

On Fri, Nov 12, 2021, 12:02 Hudzaifah Al Jihad @.***> wrote:

I'm so sorry for my newbie experience in C++ AVR syntax, i want to ask which pin do you use to connect from arduino to MDB RX TX vending machine? Is it pin 0 and 1 (serial that using for programming)? Ps i'm using Arduino MEGA2560.

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