Biscotti firmware for The Convoy S2+ flashlight

It spiraled into a big project, and at some point I had other things I needed (or wanted) to do. I shoved everything into a box, put a label on the box that said "ATtiny" and there it sat for 5 years.

Now for whatever reason, I am back at it again. My 5 year old memories are a bit faded. I am rediscovering things I did and also learning some things that I never knew back then.

• This project on Github
• Branding the cows

• Introduction
• Review and warmup
• Hardware
• C compiler, toolchain, and Podkalicki
• Getting inside of a flashlight

• Disassemble and study boilerplate
• Build the Biscotti firmware
• Fuses and CPU clock
• ADC and battery monitor
• Modes and brightness levels
• ATtiny 13, vs 25, vs 85
• Cree vsersus SST emitters
• The AVR libc library

• PWM basics
• PWM history
• Look at PWM with an oscilloscope

• Flash Biscotti into a DIP device
• Try to flash a flashlight
• Pomona to the rescue!

• Trouble - we still have trouble!
• Trouble - part 2
• Trouble - part 3
• Trouble - part 4

• The end result: "biscuit"

• Logbook of my flashlights