Objective Development Forums

I wanted to help anyone looking to use the 3.6 volt Zener on the D+ and D- lines method of making the interface. I ordered these diodes 1N5227B-T digikey number: 1N5227BDICT-ND. I build the interface and it has worked on a 6 different make and models of computers. On the surface mount zener question...

Has anyone build the USB interface, 3.6 Zener, 68 ohm resistor, 1.5K pullup using SMT parts? If so do you have Digikey part numbers for the Zener diodes?

Thank you very much the Tiny461 looks like a contender. Has anyone used one VAR to monitor the port(s) on another?

I'm very familiar with the m8. My project currently uses the m168 which is the next gen after the m8. I love the m8 and intend to do all my project programming on it however it is over 5 dollars at Digikey so I'm looking for a part that would just handle the USB stuff and be less expensive than the ...

Fantastic thank you very much. I'm looking at having 2 VARs one for just doing the USB stuff and one for everything else. I will need more than 6 I/O lines, 10 would be the minimum with no room for scaling.

I was wondering what the smallest core size and minimal I/O lines that I can use to run the AVR-USB software. I'm not sure if I'm asking it correctly but I'm looking for the smallest chip Atmel makes that will run the AVR-USB software. I didn't notice a link to tested and verified chips, could someo...

I'm also looking for a something similar however only one way, from USB --> PC but it has to be very low latency. If I come across a solution I will post back.

Before I get started with using the bootloader.
Would someone give me a general description of what the boot loader is and what functionality it provides. I'm using Atmega168 if it makes any difference. I bought a ARVISP mkII to program it.

Thank you very much for the reply, I will have to look into that.

to use the usb interface to program the chip? Example: lets say you have a USB joystick, you mounted the chip etc in an enclosure and you are playing your favorite flight sim. You decided that maybe another feature would be nice and you add it to your code. Now do I have to remove the chip from the ...

How do I calculate the size of the report descriptor?

I have learned one thing, originally I thought the indentations were just formatting error when I copied the code into a new project however now I think that was a mistake. Here is the original with formatting intact. //HID Report Descriptor PROGMEM char usbHidReportDescriptor[USB_CFG_HID_REPORT_DES...

The following is a working Report Definition for a 2-Axis 1-btn joystick, provided by ZX_USBJoy. <code> PROGMEM char usbHidReportDescriptor[USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH] = { //ZX-Joystick-1 0x05, 0x01, // USAGE_PAGE (Generic Desktop) 0x09, 0x04, // USAGE (Joystick) 0xa1, 0x01, // COLLECTION ...

Thanks for everyone that read my message.
I did get the sample to compile properly using AVR Studio 4.

I'm trying to make a simple Morse code Keyer. At the moment I have a game port keyer and I would really like a USB version. I bought a Atmega168 and a AVRISP to program it. Getting the 168 to respond to the keyer is the easy part now I need to get the data to the PC. I have tried to use AVR Studio 4...