I have tried to use an HW-260 (it doesn't have a built-in Attiny), but the device does not show up in either the IDE or device manager. Does anyone know a way to fix this?
What does it have? If it has an empty socket, consider adding an ATtiny.
It is the kind that does have an empty socket, but I did put an ATtiny in the socket.
Before anything can happen, use an ISP programmer to load code into the ATtiny. Look up Micronucleus.
I'm not sure I understand. How can I upload the ISP if the USB device is not connected?
Also does the HW-260 work as a programmer for normal code (not ISP)?
By using one of these ISP programmers, for example, in the usual way.
Have you not bothered to look up and read about Micronucleus?
What I asking is if I can upload code directly through the USB without using another Arduino once I have Micronucleus installed on the Attiny?
That is the entire point of Micronucleus.
But since you need a ISP programmer to put Micronucleus on the chip, forget using a bootloader and just use the ISP programmer to load the code you actually want to run.
The bootloader takes up a lot of memory and makes the entire project less reliable.
It will not show up until it has some form of bootloader.
Then it may only show up just before programming when the IDE tells you to plug it in.
There are a few different bootloaders available for the ATTINY 85 series.
@jremington mentioned one of the better ones.
Ok, I think I understand what you're saying. Thanks for the help.
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