Summary of OTTERPILL IS A NANO-COMPATIBLE STM32 BOARD WITH USB-PD
The OtterPill revives STM32's legacy by offering a Nano-compatible 32-bit board based on the STM32F072 microcontroller. It features an Arduino IDE compatible design, USB-C connectivity with Power Delivery support up to 20V, and DFU programming capabilities. This development board bridges the gap between modern power standards and classic Arduino form factors, enabling flexible power options via a PHY chip or resistors.
Parts used in the OtterPill:
- STM32F072 microcontroller
- ARM Cortex Mo Core
- USB-C port
- USB Power Delivery (USB-PD) physical interface chip
- DFU mode utility (dfu-util)
- Resistors for voltage forcing
- I2C lines
- UART pins
- SPI pins
STM32 was one of the names that were almost driven into oblivion, no thanks to the Arduino Revolution, but the name was brought back into the limelight when the STM32 Blue Pill was released. With its compatibility with the Arduino IDE via the STM32duino support package and its breadboard friendly form factor, it was a new beginning for STM32 and things have not slowed down with several other boards like the Black Pill sharing the spotlights with several other developments board. However, things took a further upswing recently when Jan Henrik decided to take things further and create a better board. The result of this voyage by Jan is the OtterPill.
The Otterpill is a 32-bit development board is based on the ARM Cortex Mo Core-based, STM32F072 microcontroller, and it comes in a form factor similar to that of the Arduino Nano with a pin-out that corresponds to that of the Arduino Nano where possible. For instance, the power special purpose pins like the I2C lines, UART and SPI pins, along with power and ground on the OtterPill, are located on the same spot/pins as the Arduino Nano.
The OtterPill sports a USB-C port like most recent development boards and like the Blue Pill, it can also be programmed using the Arduino IDE. As similar to the OtterPill is to the Bluepill, a few differences however exist starting from allowing users to reprogram the board through the DFU mode, using the dfu-util utility to flash the board. The Otterpill also comes with a USB Power Delivery (USB-PD) physical interface chip which makes it possible to power the board and connected peripherals/components with up to 20V supply voltage. In place of the USB-PD PHY chip, users can decide to power the board by using resistors to force a USB-C supply to provide 5volts and up to 3amps.
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- What is the OtterPill?
The OtterPill is a 32-bit development board based on the ARM Cortex Mo Core-based STM32F072 microcontroller. - Can I program the OtterPill using the Arduino IDE?
Yes, the OtterPill can be programmed using the Arduino IDE similar to the Blue Pill. - Does the OtterPill support USB Power Delivery?
Yes, it includes a USB-PD physical interface chip allowing up to 20V supply voltage. - How can I reprogram the OtterPill?
You can reprogram the board through DFU mode using the dfu-util utility. - Is the pin-out compatible with the Arduino Nano?
Yes, the pin-out corresponds to that of the Arduino Nano where possible. - What is the alternative way to power the board if not using the USB-PD chip?
Users can use resistors to force a USB-C supply to provide 5 volts and up to 3 amps. - Which microcontroller does the OtterPill use?
The board uses the STM32F072 microcontroller.
