Society of Robots - Robot Forum
Electronics => Electronics => Topic started by: blackheart on March 09, 2009, 03:53:20 AM
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Hello! As many of you have noticed, I was missing for a while. In the mean time, I built my first robot...
I used an arduino 2009, the motor controller from maker shed and my brother's old rc car. Oooh, and photoresistors. It worksm just like I expected it. I still have some work to do on it, and I will post pictures/videos once my ping ultrasound rf comes in and I get it working.
I have a question now.
I also got some more experience making my own circuits. I would like, for my next robot, to use a uC board made by myself. The only problem with that, is the programming. I am so in love with the arduino C based language and headers, that I don't feel like using anything else. Is there any way to flash the arduino firmware to an ATMega 168/328 like the one on the arduino?
Airman, how did you do it? I mean, you invented an arduino based pcb, so you must be very experienced.
Thank You!
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wait, so you just want to make your own board? well state what you want it to be able to do and we will go from there. eg. how many I/O ports, memory things like that.
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Yes, it is really easy. You can even download arduino programs on the normal $50 robot board, you just have to pay attention to pinouts.
(http://arduino.cc/en/uploads/Hacking/Arduino-To-Atmega8-Pins.png)
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great. i thought it was all about flashing a special firmware to the atmega.
so the 50$ board is by default arduino compatible?
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Arduino is using a bootloader that you can download to the fresh microcontroller using a hardware programmer like the AVR ISP or AVR MK II or Tiny USB. After you have the connections done (the 6 pin header, if you need the schematic, we'll show it to you), from Arduino software you select from Tools menu, Burn Bootloader, w/AVR ISP or whatever programmer you have. Make sure you select the proper board (Arduino Diecimila) and proper serial Com port befor you burn the bootloader.
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Thank You!
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Yea, I made the $50 controller, and have only used Arduino to program it. I'm using the MKII to upload the .hex files. The only thing I had to do was set the internal clock fuse to 8 MHz instead of the external timer/oscillator the arduino uses. I've had no problems. Only thing I changed with the $50 board, was add some pins for PWM. I'm about to try and add the USB/serial connector so that I can directly communicate directly with Arduino software. Will update if I get it going, or do the same if you do please.
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This should help
(http://www.arduino.cc/playground/uploads/Learning/Atmega168PinMap2.png)
Note the extra PWM pins on digital 3,5, and 6