OtterPill
About the OtterPill PCB
OtterPill is an open source STM32 PCB design by Jana-Marie, published on GitHub under the CERN-OHL-S-2.0 license. It is a 2-layer board measuring 43.2 × 17.6 mm, with 42 components from 27 distinct parts.
Its main chip is the STM32F072CBTX, from the STM32 family. Other key parts include the USBLC6-4, SY8201 and FUSB302BMPX. By type, the board carries 16 resistors, 12 capacitors, 6 connectors, 4 ICs, 2 diodes and 1 switch.
It belongs with the dev boards & breakouts designs in this gallery.
From the project
stm32f072 dev board with arduino nano alike pinout
Hardware rev 1.3 not tested, gerber are broken.
Main components on the OtterPill
OtterPill bill of materials (BOM)
42 components, 27 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | USBLC6-4 | SOT-23-6 | U1 |
| 1 | STM32F072CBTX STM32F072C8Tx | LQFP-48_7x7mm_P0.5mm | U2 |
| 1 | SY8201 | SOT-23-6 | U3 |
| 1 | FUSB302BMPX | WQFN-14-1EP_2.5x2.5mm_P0.5mm_EP1.45x1.45mm | U4 |
| 1 | C167321 USB-c | USB-C 16Pin | J1 |
| 1 | VBUS | PinHeader_1x01_P2.54mm_Vertical | J2 |
| 1 | 1 | PinHeader_1x15_P2.54mm_Vertical | J3 |
| 1 | 2 | PinHeader_1x15_P2.54mm_Vertical | J4 |
| 1 | SWD | PinHeader_1x04_P2.54mm_Horizontal | J5 |
| 1 | GND | PinHeader_1x01_P2.54mm_Vertical | J6 |
| 1 | DFU | SW_SPST_PTS810 | SW1 |
| 1 | C2286 LED RED | LED_0603_1608Metric | D1 |
| 1 | C72043 LED GREEN | LED_0603_1608Metric | D2 |
| 1 | 4U7 4u7 | L_1210_3225Metric | L1 |
| 3 | C15850 10u 25V | C_0805_2012Metric | C1, C4, C11 |
| 1 | C14663 100n 50V | C_0603_1608Metric | C2 |
| 7 | C1525 100n 50V | C_0402_1005Metric | C3, C5, C6, C7, C8, C9, C10 |
| 1 | 100n 50V | C_0402_1005Metric | C12 |
| 2 | DNP | R_0402_1005Metric | R1, R2 |
| 5 | 3K3 3k3 | R_0402_1005Metric | R3, R4, R5, R10, R11 |
Show 7 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 100K 100k | R_0402_1005Metric | R6, R12 |
| 1 | 22.1K 22k | R_0402_1005Metric | R7 |
| 2 | 0 | R_0402_1005Metric | R8, R9 |
| 1 | 100 | R_0402_1005Metric | R13 |
| 1 | 100k | R_0402_1005Metric | R14 |
| 1 | 22k | R_0402_1005Metric | R15 |
| 1 | 1 | R_0603_1608Metric | R16 |
OtterPill design files
The KiCad project lives in the Jana-Marie/OtterPill repository on GitHub; these links point at the commit this page was built from.
OtterPill: common questions
What microcontroller does the OtterPill use?
The OtterPill is built around the STM32F072CBTX, from the STM32 family.
How big is the OtterPill PCB?
The OtterPill measures 43.2 × 17.6 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the OtterPill?
42 components, from 27 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the OtterPill design files?
From the Jana-Marie/OtterPill repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the OtterPill design in my own project?
Yes, under the terms of its CERN-OHL-S-2.0 license, which Jana-Marie chose for the repository.
Can I test firmware for the OtterPill without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
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