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Author Topic: Com Port - DuinomiteMega  (Read 2932 times)

RonnS

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Com Port - DuinomiteMega
« on: November 20, 2015, 12:08:51 AM »
Helloo from Germany..

i call a Duinomite Mini  and a Duinomite Mega my own.. i use the Mini with an ArduinoAdator together wit an Ciseco SRF Shield ..this have the Com Port at D0  and D1 . Now i wish to use the Duinomite Mega together with the SRF Shield ( its an RF Module with 868 Mhz )so i need the hardware Uart  with 115200 Baud at the Pins D0 and D1

what i have to do to get this to work ? ( i dont need the Rs232 Connector)

thanks Ron

JohnS

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Re: Com Port - DuinomiteMega
« Reply #1 on: November 20, 2015, 10:10:18 AM »
Just connect and it looks like it will work - but it may be that if you use BASIC that it does not use it as a hardware uart or maybe does not support 115200.  You'll have to check that.

The 330R I see on RX will (I think) be fine.  Worst case you could cut the PCB traces for RX / TX.

John

RonnS

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Re: Com Port - DuinomiteMega
« Reply #2 on: November 20, 2015, 03:25:37 PM »
thank you for your answer John..,

it works with the Duinomite Mini very well

the resistors R2 and R3 are 0 (zero) ohm (Duinomite Mega), should i cut the wire brige and solder an 330 ohm resistor in it ?

thanks Ron

JohnS

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Re: Com Port - DuinomiteMega
« Reply #3 on: November 20, 2015, 08:37:26 PM »
I was thinking that R42 will already allow what you want.  I can't try it now and may be wrong, so see what you think.

John

RonnS

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Re: Com Port - DuinomiteMega
« Reply #4 on: November 22, 2015, 12:44:40 AM »
the problem is solved. I cut the  connection  RX and TX (leg 11 and leg 12) for chip 3232 . It works ! :) . Com4 is now available at D0 and D1 Aduino Header
now I can fit the Mega into my new  BOPLA Enclosure

thank you very much
« Last Edit: November 22, 2015, 12:57:15 AM by RonnS »

JohnS

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Re: Com Port - DuinomiteMega
« Reply #5 on: November 22, 2015, 05:03:14 PM »
Good news!

John