OtterIron Devkit
About the OtterIron Devkit PCB
OtterIron Devkit is an open source STM32 PCB design by Jana-Marie, published on GitHub. It is a 2-layer board measuring 28 × 30 mm, with 67 components from 32 distinct parts.
Its main chip is the STM32F072C8TX, from the STM32 family. Other key parts include the USBLC6-4SC6, AP2204R-3.3, STUSB4500QTR, OPA340NA and MCP9700AT-ETT. By type, the board carries 25 resistors, 24 capacitors, 7 ICs, 4 transistors, 3 connectors and 2 switches.
It belongs with the power & battery designs in this gallery.
From the project
USB-PD soldering station for JBC C245 handles.
Main components on the OtterIron Devkit
OtterIron Devkit bill of materials (BOM)
67 components, 32 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | USBLC6-4SC6 | SOT-23-6 | U1 |
| 1 | AP2204R-3.3 | SOT-89-3 | U2 |
| 1 | STUSB4500QTR | QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm | U3 |
| 1 | STM32F072C8TX STM32F072C8Tx | LQFP-48_7x7mm_P0.5mm | U4 |
| 1 | OPA340NA | SOT-23-5 | U5 |
| 1 | MCP9700AT-ETT | SOT-23 | U6 |
| 1 | SI8540 | SOT-23-5 | U7 |
| 1 | SS8050 | SOT-23 | Q1 |
| 1 | DMP3017SFG | Diodes_PowerDI3333-8 | Q2 |
| 1 | SS8050 | SOT-23 | Q3 |
| 1 | BC807 | SOT-23 | Q4 |
| 1 | USB_C_RECEPTACLE_USB2.0 USB_C_Receptacle_USB2.0 | USB-C 16Pin | J1 |
| 1 | OLED_64X32 OLED_64x32 | 0.69OLED | J2 |
| 1 | C245 | PinHeader_1x06_P2.54mm_Vertical | J3 |
| 1 | KEY1 key1 | SW_SPST_EVQP7C | SW1 |
| 1 | KEY2 key2 | SW_SPST_EVQP7C | SW2 |
| 1 | B140-E3 | D_SOD-123F | D3 |
| 1 | 4.7u | Inductor_4040 | L1 |
| 4 | C15849 1μF 25V | C_0603 | C1, C4, C9, C11 |
| 10 | C1525 0.1μF | C_0402 | C2, C3, C5, C6, C7, C8, C10, C18 +2 |
Show 12 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 6 | C52923 1μF 25V | C_0402 | C12, C13, C14, C15, C19, C20 |
| 1 | 18P 18p | C_0402 | C16 |
| 1 | DNP | C_0402 | C17 |
| 2 | 1000µF | CP_Radial_D10.0mm_P5.00mm_flat | C23, C24 |
| 2 | 560K 560k | R_0402 | R1, R11 |
| 2 | 100K 100k | R_0402 | R2, R17 |
| 15 | 2K37 2k37 | R_0402 | R3, R4, R5, R6, R7, R8, R9, R10 +7 |
| 1 | 750K 750k | R_0402 | R15 |
| 1 | 20 | R_0603 | R19 |
| 2 | 33 | R_0402 | R20, R21 |
| 1 | 10M 10m | R_0805 | R22 |
| 1 | 2k37 | R_0402 | R25 |
OtterIron Devkit design files
The KiCad project lives in the Jana-Marie/Otter-Iron-PRO repository on GitHub; these links point at the commit this page was built from.
OtterIron Devkit: common questions
What microcontroller does the OtterIron Devkit use?
The OtterIron Devkit is built around the STM32F072C8TX, from the STM32 family.
How big is the OtterIron Devkit PCB?
The OtterIron Devkit measures 28 × 30 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the OtterIron Devkit?
67 components, from 32 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 OtterIron Devkit design files?
From the Jana-Marie/Otter-Iron-PRO repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the OtterIron Devkit design in my own project?
The repository has no license, so all rights stay with Jana-Marie. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the OtterIron Devkit 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.
More boards in Otter-Iron-PRO
Similar boards
STM32LumenPnP Motherboard
opulo-inc
149 × 95 mm296 parts4LCC-BY-SA-4.03.7k
STM32AxxSolder
AxxAxx
39 × 82.5 mm122 parts2LGPL-3.01.7k
STM32AIOC
skuep
21 × 31.5 mm47 parts2LMIT1.4k
STM32Ferris
pierrechevalier83
208.8 × 86.8 mm102 parts2LSHL-2.11.3k
STM32176 pin board
rusefi
61.8 × 73.2 mm76 parts2LGPL-3.01.2k
STM32Brain board STM32F407
61.8 × 73.2 mm69 parts2LGPL-3.01.2k