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1  Using Arduino / Motors, Mechanics, and Power / Re: Stepper Motor 28BYJ48 , ULN2003 driver board and Arduino Library on: January 22, 2013, 10:20:16 pm
LarryD, if you can be more helpful, I'll appreciate it. Yes, it is geared down but what that means? How it relates to what the original posted observed (1 second on, 1 off)? I just received the similar board and controller today and am eager to try it on.

Thanks in advance.
2  Community / Exhibition / Gallery / Re: N64 To USB, or how to turn your Arduino in a USB HID joystick w/ N64 controllers on: January 10, 2013, 08:20:02 pm
is there a sample code that just simulates button presses and joystick movements? I wrote a sample program to toggle some of the buttons but it keeps moving one of the joystick axis.

I don't know what i am doing wrong.

The test program can simulate button presses sequentially with a delay (100) in between them. this way I can look in the joystick calibration dialog in windows.

3  Community / Exhibition / Gallery / Re: N64 To USB, or how to turn your Arduino in a USB HID joystick w/ N64 controllers on: January 09, 2013, 11:42:53 pm
can you please provide me some help in building the hex file from usbserial sources that come with the arduino code and produce the .hex file identical to Arduino-usbserial-atmega16u2-Uno-Rev3.hex file?

Once I have this, I'd like to modify the source for my project.

So far I have managed to compile the usbserial sources to produce the .hex file identical to the Arduino-usbserial-uno.hex included in the arduino code. However this does not work on my arduino.

Thanks in advance
4  Using Arduino / Programming Questions / Re: Digital photo convertor on: January 09, 2013, 02:56:05 pm
James C4S,

I'd leave image processing to higher powers (in 32-bit land). Arduino based board will be to capture and save/send.


scavenged parts are just for proof-of-concept. Once successful, I'd go with a CCD or CMOS. I'll need to do more research on this though.
5  Using Arduino / Programming Questions / Re: Digital photo convertor on: January 09, 2013, 01:27:21 pm
bitmap for now. The main components in this is to use stepper motor to advance photo/negative at constant rate and use line scanner to scan each line.
6  Using Arduino / Project Guidance / Re: Recommendation for project needing ~15 potentiometers on: January 09, 2013, 01:21:30 pm
I think what the original poster had in mind was to build a device using Arduino that from a PC will look like a USB device that has 15+ potentiometers + 2 joystick axes.

I am currently thinking of a similar device (although with not so many analog controls but a analog outputs and few buttons).

first (and probably most easy) thing to do is to write a Ardunio sketch that reads the analog and digital signals. Then send them to the Atmega16U2 which has been re-programed to appear as a USB device to the PC. Look at this site for inspiration.

Where I am stuck at the moment, is the lack of information on how to compile the modified firmware (using LUFA and avr-gcc) that can be flashed to the Atemga16U2. I have asked that question in another post, awaiting the response.
7  Using Arduino / Programming Questions / Digital photo convertor on: January 09, 2013, 01:10:26 pm
Recently I purchased a digital photo convertor that I can feed my photos and negatives to and it digitizes them and stores them on the SD card.

I was not happy with the quality and compression of the resultant images though.

I think I have necessary expertise to build something like this on my own using a stepper motors and line scanners (both of which I plan to salvage from an old scanner) with my trusty Arduino Uno.

Before starting on this though, I want to check if anyone else has attempted something like this and maybe can share the details and pitfalls faced.

8  Using Arduino / Programming Questions / Building usbserial firmware for Uno Rev 3 on: January 09, 2013, 01:05:42 pm
I have been able to build the usbserial-uno.hex from the sources. The .hex file I created is identical to the usbserial-uno.hex file shipped with the arduino sources.

However, this file does not work. When I flash (DFU) to the uno and connect over the USB port, my windows 7 refuses to recognize it.

When I re-flash the board with Arduino-usbserial-atmega16u2-Uno-Rev3.hex, everything works fine. I am trying to compile the sources so that I can get a .hex file identical to the one in the kit.

I searched all over the internet but could not find a reliable way to do this.

My aim in recompiling the sources to a .hex file identical to the one already included in the Arduino distribution, is to validate my build process. Once done, I'll create the new .hex file to be DFUed to the board.

I need help. Thanks in advance.
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