[SOLVED] atmega328-+-atmega8 .

[gshubham96]

Hello,
Me and my friend are making a robot.The problem is that he works with atmega8, while i have arduino uno based on atmega 328. my question, can we transmit data b/w them?
the arduino uno will be on the transmitter side with the atmega 8 at the reciever side or vice-versa. we will be communicating through RF.
what will be the circuit and coding??
any help is appreciated
Regards,
Shubham

 

[wp100]

Hi,

Yes you can easily communuicate between them using the Serial / Usart port.

To do it by RF their are loads of lo cost boards made by ASK or similar with freqencies to suit your area.

They send and recieve data in Serial mode suitable for the 5v Amegas.

Sure you will find suitable code examples in the Arduino Forum or Playground.

Another method depending on your operating range / cost are the Bluetooth modules - again serial compatible.

Plenty of choice and info here .Wireless - Categories - SparkFun Electronics

While you can connect the two chips Usart ports direct to each other to test your comms link, as you can see from the Uno circuit diagram use 1k resistors in series in each line, this stops any short should you connect the lines the wrong way round.

 

[srikanthsamaga]

Check out these links, The CC2500 modules are very good and reliable.
I have used UART based module.

**broken link removed**

**broken link removed**

2.4GHz TRANSCEIVER MODULE CC2500 [TPS-00709] - Rs.375.00 : :+: Online TPS Shoppe - Buy Electronics and Robotics components - India, Techfest 2011 ,Kshitij 2011 competitions Free Stuff Atmel PIC microcontroller sensor LFR USB AVR 8051 Programmer STK 2

 

[gshubham96]

i want to know the coding coz i am a bit confused.

---------- Post added at 14:22 ---------- Previous post was at 14:20 ----------

i want to know the coding coz i am a bit confused. i am maiking a r/c circuit

 

[srikanthsamaga]

With the modules I mentioned in my last post, you can communicate with those wireless modules through UART or SPI.
I assume you know how to use UART (serial port) in ATMEGA.

 

[gshubham96]

I am using 434 Mhz modules RF Modules (Tx + Rx Pair) 433 Mhz ASK [RKI-1064] - Rs.425 : Robokits India, Easy to Use, Versatile Robotics Kits...

I assume you know how to use UART (serial port) in ATMEGA.

That's the problem, I know how to use serial comands of arduino pretty much but dont noe the virtualwire library.