OtterIron PRO Bot
About the OtterIron PRO Bot PCB
OtterIron PRO Bot is an open source STM32 PCB design by Jana-Marie, published on GitHub. It is a 2-layer board measuring 50 × 20.5 mm, with 43 components from 25 distinct parts.
Its main chip is the STM32F072C8TX, from the STM32 family. Other key parts include the AP2204R-3.3, OPA340NA, MCP9700AT-ETT and SI8540. By type, the board carries 17 resistors, 14 capacitors, 5 ICs, 4 transistors, 2 connectors and 1 diode.
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 PRO Bot
OtterIron PRO Bot bill of materials (BOM)
43 components, 25 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | AP2204R-3.3 | SOT-89-3 | U2 |
| 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 Conn_01x10 | PinHeader_1x10_P2.00mm_Horizontal | J1 |
| 1 | C245 | PinHeader_1x04_P2.54mm_Horizontal | J3 |
| 1 | B140-E3 | D_SOD-123F | D3 |
| 4 | C15849 1μF 25V | C_0603 | C1, C4, C9, C11 |
| 7 | C1525 0.1μF | C_0402 | C2, C5, C7, C8, C10, C18, C22 |
| 1 | 18P 18p | C_0402 | C16 |
| 1 | DNP | C_0402 | C17 |
| 1 | 1000µF | CP_Radial_D10.0mm_P5.00mm_flat | C24 |
| 1 | 560K 560k | R_0402 | R1 |
| 2 | 100K 100k | R_0402 | R2, R17 |
| 8 | 2K37 2k37 | R_0402 | R5, R6, R8, R9, R12, R14, R16, R18 |
Show 5 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 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 PRO Bot 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 PRO Bot: common questions
What microcontroller does the OtterIron PRO Bot use?
The OtterIron PRO Bot is built around the STM32F072C8TX, from the STM32 family.
How big is the OtterIron PRO Bot PCB?
The OtterIron PRO Bot measures 50 × 20.5 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the OtterIron PRO Bot?
43 components, from 25 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 PRO Bot 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 PRO Bot 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 PRO Bot 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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