Objective Development Forums

I am making the cornell project- mister gloves using atmega 16. I have completed the hardware part and have used the programs from the website and hid keys program from v-usb.My problem is every time i put the usb cable in my laptop (windows 7),an error message pops up saying USB DEVICE is not reco...

The only obvious thing I can see is that your controller runs out of spec. 12MHz @ 3.3V without violating the spec is only possible with devices that run with 20MHz @ 5V, NOT with those running with 16MHz @ 5V as yours does. Thx Micha. As far as I know, That specification applies ATmega32(L) packag...

xiangrui wrote:Are you sure it is right to connect oscillator to only XTAL1?

Thx xiangrui.
I applied as the figure 8.4 on the datasheet.
I thought SCO-103 is not just a crystal, I assume that is a kind of clock generator.
(it has many pins such as Vcc, GND and Output)

Furthermore, I needed the clock shared.

The only obvious thing I can see is that your controller runs out of spec. 12MHz @ 3.3V without violating the spec is only possible with devices that run with 20MHz @ 5V, NOT with those running with 16MHz @ 5V as yours does. Thx Micha. As far as I know, That specification applies ATmega32(L) packag...

First of all, please kindly understand my broken English. It's not my first language. I used ATmega32A for MCU. I built a PCB using a 3.3v Regulator (LM1117s3.3) and an 12Mhz OSC (SCO-103). No diodes. (At least, I think there wiil be no reason to use diodes). The oscillator is connected to XTAL1. XT...