Objective Development Forums

Hello. I have a little problem with hardware part of avr-usb. My device is recognized as 'full speed', though afaik it should recognize as low speed. I use Zener diode level conversion. 1.3k resistor between Vcc and D-, 3.3v zeners . I try with 3.3v because I have working USBasp with same 3.3v diode...