attiny85 via UNO in Arduino IDE, not uploading

Using Arduino Microcontrollers
1

Hi All

I've got a strange problem that doesn't seem to be detailed on the forum. I have my Arduino IDE setup for programming the Attiny85, with the connections on some protoboard, as per

The code compiles ok, then when I go to upload, it just displays "Uploading....." for a very long time (have left it 10+mins). The TX LED on the Arduino (UNO) flashes, but the program never uploads.

The same error occurs If I remove my Attiny from the protoboard. "Uploading..." appears, TX LED flashes, no other errors. So it is as if the Attiny is not being detected? Anyone had something similar?

2

Did you upload the ArduinoISP sketch to the Uno? Did you double-check your connections? Make sure that pins 11-12-13 are connected straight, and that pin 10 on the Uno goes to the Reset pin on the '85.

3

Ah, thanks, yes that was it!

I uploaded the ISP sketch on another board and had swapped it over with a new board, forgot to re-program!