Hi,
I am working on a project in which I need to measure vehicle speed using Radar Sensor.
I am using iSYS4002 (innosent GmbH) Radar sensor in my project.
I have connected Controllino Maxi(ATmega2560) using RS485 Interface.
Can anyone help me to find out how can I communicate between ATmega and Radar sensor?
I need to measure speed from sensor and showing as an analog output on controller.
Thank you
The RS-485 standard specifies differential signaling on two lines rather than single-ended with a voltage referenced to ground as you would have with Serial. The right pins need to get into your connector on the arduino side.
Your sensor has a special connector that you need to properly connect to an RS485 interface
then see this article for ideas on the code
Hi J-M-L,
Thank you for your reply.
I made pin configuratation in a proper manner.
I was trying to understand programming part you suggested me.
It is for connection between 2 different Arduino with 2 different programms.
but in my case I have only 1 Arduino and 1 radar Sensor.
Should I configure in same manner or is there any particular method for this type of configuration?
Thanks again.
I have one more doubt.
I have a document with different PIN configuration.
I have configured as:
A(+) ---> Rx
B(-) ---> Tx
Let me know If I made any mistake.
Always best to load the images directly - here is your image
(hi resolution source)
The Controllino Maxi has its RS485 interface already wired (with no termination inside) and the driver is connected to the UART3 (TxD3 / RxD3) of the ATmega2560.
so if you have the right cable then you need wires coming into the Controllino Maxi form your sub DB9 pins 2,3 and 5. Connect pin 5 to GND of the Controllino Maxi RS485, pin 2 probably to - and pin 3 to +
(verify polarity). I assume they come from the remote connector pin 5/6/7.
then try writing a piece of code listening to what's coming into Serial3
