I am having trouble with some trinket pro's. Namely I only get the green light, no red light indicating bootloader mode. Because it isn't entering bootloader mode I obviously can't write my own program. So far I have tried 6 pros, all with the same behaviour... The thing that confuses me is that I can use the exact same setup (PC, cable, arduino IDE configuration) to reprogram my very old trinket pro. Just the new ones are giving me problems.
Suspecting it might be the bootloader I tried the Arduino Uno bootloader reprogram method, but it tells me the following:
Is there anything I can do to fix the trinkets and get them to work again?Adafruit Trinket 5V programmer - June 9 2015
Type 'G' or hit BUTTON for next chip
Starting Program Mode [OK]
Reading signature:950F
Searching for image...
Found "trinket_5V_2015_03_17.hex" for atmega328
Setting fuses
Set Lock Fuse to: 3F -> E000 Set Low Fuse to: FF -> A000 Set High Fuse to: D0 -> A800 Set Ext Fuse to: 5 -> A400
Verifying fuses...
Lock Fuse: 3F is 3F Low Fuse: 0xFF is 0x62Failed to verify fuses
And please let me know if I did something wrong with this post, as it is my first time posting here.
Thanks!