I successfully programmed an ATtiny 85 with the tiny AVR programmer (burned fuses for 8 MHz, uploaded sketch, prototyped circuit successfully), but when I tried to upload the sketch again, to make a change in a threshold value, I got this error: avrdude: Error: Could not find USBtiny device (0x1781/0xc9f) The on-board LED on the tiny AVR ... Arduino Tutorial 3 | How to solve if you have trouble uploading program to your Arduino board Follow Us On ♥ Website : diytechstudio.com ♥ RUclip Subscription : goo.gl/BHxFf7 ♥ Twitter : goo.gl/h76vsZ ♥ Instagram : goo.gl/NSHvrG ♥ Google Plus : goo.gl/NNBuWq ♥ Facebook : goo.gl/VXQPqc
Jan 08, 2012 · A second attempt to upload a sketch resulted in this error message: avrdude: ser_open(): can't open device "/dev/ttyACM0": Input/output error ioctl("TIOCMGET"): Invalid argument Afterwards, the /dev/ttyACM0 device had disappeared without a trace.
avrdude: ser_open(): can't open device "\.\COM1": Prístup je odmietnutý. (prístup je odmietnutý means acces is denied) Any ideas how to solve this? Arduino forums didnt answer. Answer: The Arduino clone device you have linked to uses the CH340 chip as its USB serial adapter.