58 lines
1.6 KiB
Markdown
58 lines
1.6 KiB
Markdown
# OtterPill
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OtterPill is a 3$ STM32F072 devboard featuring USB 2.0 full-speed, a DFU Bootloader, a USB-PD Phy and Arduino nano alike pinout and size.
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Changelog V1.2: BOM cost reduction by ~40%, PCB can be fully populated by JLCSMT, more efficient buck converter (PCB gets less warm at 20V), GND-hook for probing, Reset-Pin exposed as pad, power pads for 20V/5A
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More documentation and firmware examples will be aviable soon.
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**How do I get an OtterPill?**
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I have made a small production run, OtterPills will be available soon! More details will be announced via [Twitter](https://twitter.com/janhenrikh/) :3
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## Building and Flashing
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### Via Arduino
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[You can build and flash the firmware via Arduino as described here.](https://github.com/stm32duino/Arduino_Core_STM32)
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### Via Makefile and DFU
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Or you can generate a basic firmware, with HAL init and Makefile, with CubeMX. The binary can then be build with make and flashed with dfu-utils. To enter DFU mode, press and hold the Button while plugging in power.
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$ make
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$ dfu-util -a 0 -s 0x08000000:leave -D build/firmware.bin
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## Pinout
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## Blank example firmware
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SoonTM
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## USB-PD example firmware
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This is a working USB-PD example using ChibiOS, a new voltage can be requested by pressing the Button.
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[https://github.com/Jan--Henrik/USB-PD-Firmware](https://github.com/Jan--Henrik/USB-PD-Firmware)
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## Shields and addons
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Most Arduino shields should be compatible.
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#### [USB-to-CAN-adapter](https://github.com/Jan--Henrik/OtterPill-CAN-Adapter)
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## Images
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### Rev 1.1
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### Rev 1.2
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