2/23/2023 0 Comments Avr studio 5.1![]() ![]() Instead, I’ll just outline the steps needed and show the pictures of end result. This time I will not walk you through every connection. I’ve never had any problems, and many others have succeeded with this setup, but if you encounter persistent problems, I suggest you to power the ATtiny2313 straight from 5V of the USB line and use zener diodes on D+ and D- lines to drop their voltage, as is done in my later tutorial with the ATtiny85 microcontroller. ![]() Update: Some people have noted that the setup I’m using here runs ATtiny2313 at 12 MHz with only 3.3V VCC, which is outside the specified range (frequencies over 10 Mhz require 4.5V or more). 6-pin header for programming the ATtiny and 4.7 kΩ pullup for reset pin.1 MΩ pullup resistor for D+ and 1.5 kΩ pullup for D.Two 68 Ω resistors between USB data lines and the microcontroller pins.Two 27 pF ceramic capacitors to stabilize the crystal.Larger breadboard and additional jumper wires.In this part, we will expand our setup with following parts: In the first part we learned how to get 3.3V from USB to power our circuits. This is the second part of my USB tutorial for ATtiny2313 and V-USB library. ![]()
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