Have an Android phone?
Here is a vid about programming with a pin programmer.
Works with a clip too…just plug the USB programmer in the phone with an OTG cable.
Otherwise will need a program called AVRDude downloaded and running on a Windows computer.
Read this thread about the Emisar D4v2. Same principles, just a different flashlight and uses pogo pins instead of a clip.
Here is another thread about wiring the clip to the USBprogrammer:
The chip is a different one, but the method the same.
Do you have the hex files to put on the chip?
I am not versed enough to suggest what files to flash on your driver and LED setup 