Arduino_Boards
micronucleus
Arduino_Boards | micronucleus | |
---|---|---|
1 | 3 | |
260 | 1,634 | |
0.4% | 0.5% | |
4.9 | 2.5 | |
about 1 month ago | 2 months ago | |
C | C | |
- | GNU General Public License v3.0 or later |
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Arduino_Boards
micronucleus
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Building the worlds jankiest serial to USB cable from scavenged parts
You can actually bit-bang low speed USB on Arduino [0]. There is even a bootloader [1] for ATtiny. It is obviously not compatible with Arduino, but those tiny boards look too cute to ignore [2]. Also, you can use USB port both for downloading firmware and your application.
[0] https://github.com/obdev/v-usb
[1] https://github.com/micronucleus/micronucleus
[2] https://cpldcpu.wordpress.com/2014/04/25/the-nanite-85/
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Emulator of Original Dell Charger Using ATTINY85
The Digispark[1] and its clones use the ATTINY85 and offer flashing over USB via the Micronucleus bootloader[2] using V-USB[3]. It comes at the cost of a significant chunk of flash storage, but the convenience is excellent. Plus, V-USB support means you can emulate all sorts of USB devices. I've used it to build a DIY NES controller adapter, but it's commonly used as a cheap Rubber Ducky[4]. For projects where USB interfacing makes sense, it can be a good fit.
1: http://digistump.com/products/1
2: https://github.com/micronucleus/micronucleus
3: https://www.obdev.at/products/vusb/index.html
4: https://shop.hak5.org/products/usb-rubber-ducky-deluxe
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Writing bootloader to practice programming skills?
So it looks like they're using the micronucleus bootloader for the linked example. That bootloader not only does the normal bootloader job, but also acts as a bitbanging USB device in order to communicate with the computer over USB. The USB bitbanging is a huge endeavor to undertake on top of writing a bootloader.
What are some alternatives?
MegaCore - Arduino hardware package for ATmega64, ATmega128, ATmega165, ATmega169, ATmega325, ATmega329, ATmega640, ATmega645, ATmega649, ATmega1280, ATmega1281, ATmega2560, ATmega2561, ATmega3250, ATmega3290, ATmega6450, ATmega6490, AT90CAN32, AT90CAN64 and AT90CAN128
HoodLoader2 - 16u2 Bootloader to reprogram 16u2 + 328/2560 with Arduino IDE
ArduinoXInput_AVR - AVR boards package for the ArduinoXInput project
cc2538-bsl - Python cross-platform script to upload firmware via the serial boot loader onto the CC13xx, CC2538 and CC26xx SoC.
QuarkTS - An open-source OS for embedded applications that supports prioritized cooperative scheduling, time control, inter-task communications primitives, hierarchical state machines and CoRoutines.
libusb - A cross-platform library to access USB devices
ATTinyCore - Arduino core for ATtiny 1634, 828, x313, x4, x41, x5, x61, x7 and x8
lk2nd - Secondary little kernel (lk) bootloader for Qualcomm MSM8953 devices
picostdlib - Nim wrapper for the raspberry pi stdlib
svd2nim - Convert CMSIS ARM SVD files to nim register memory mappings
ThinkpadBattery - Open source Thinkpad T420 battery design
dell-charger-emulator - Emulator of original Dell charger using ATTINY85