ISS MD SUB-2
About the ISS MD SUB-2 PCB
ISS MD SUB-2 is an open source STM32 PCB design by mememan5868, published on GitHub. It is a 2-layer board measuring 33.8 × 75.1 mm, with 30 components from 23 distinct parts.
Its main chip is the STM32F303K8Tx, from the STM32 family. Other key parts include the NJM2845DL1-33-TE1. By type, the board carries 10 resistors, 7 connectors, 5 capacitors, 3 ICs, 2 switches and 2 diodes.
Main components on the ISS MD SUB-2
ISS MD SUB-2 bill of materials (BOM)
30 components, 23 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STM32F303K8Tx | LQFP-32_7x7mm_P0.8mm | U1 |
| 1 | NJM2845DL1-33-TE1 | DPAK228P968X238-4N | U2 |
| 1 | STM32F303K8TX MCP2561-E-SN | SOIC-8_3.9x4.9mm_P1.27mm | U3 |
| 1 | Crystal_GND24_Small | XTAL_TSX-3225_25.0000MF10P-C0 | Y1 |
| 1 | Conn_01x06 | PinHeader_1x06_P2.54mm_Vertical | J1 |
| 1 | Conn_01x04 | JST_XH_S4B-XH-A_1x04_P2.50mm_Horizontal | J2 |
| 1 | Enc | JST_XH_S4B-XH-A_1x04_P2.50mm_Horizontal | J3 |
| 1 | CONN_01X04 Conn_01x02 | JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J4 |
| 1 | Conn_01x02 | JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J5 |
| 1 | CONN_01X02 Conn_01x10 | PinSocket_1x10_P2.54mm_Vertical | J6 |
| 1 | Conn_01x02 | PinHeader_1x02_P2.54mm_Vertical | J7 |
| 1 | SW_MEC_5E | SW4_SKRPABE010_ALPS | SW1 |
| 1 | SW_DIP_x03 | SW_DIP_SPSTx03_Slide_6.7x9.18mm_W6.73mm_P2.54mm_LowProfile_JPin | SW2 |
| 1 | LED | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D1 |
| 1 | CAN_LED | LED_0603_1608Metric_Pad1.05x0.95mm_HandSolder | D2 |
| 2 | 0.1uF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C4 |
| 2 | 20pF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2, C3 |
| 1 | 0.1UF 0.1uF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C5 |
| 2 | 10k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2 |
| 2 | 470 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3, R4 |
Show 3 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 120 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R5 |
| 3 | 1k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R6, R9, R10 |
| 2 | 470 1k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R7, R8 |
ISS MD SUB-2 design files
The KiCad project lives in the mememan5868/2026-NroboB repository on GitHub; these links point at the commit this page was built from.
ISS MD SUB-2: common questions
What microcontroller does the ISS MD SUB-2 use?
The ISS MD SUB-2 is built around the STM32F303K8Tx, from the STM32 family.
How big is the ISS MD SUB-2 PCB?
The ISS MD SUB-2 measures 33.8 × 75.1 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the ISS MD SUB-2?
30 components, from 23 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 ISS MD SUB-2 design files?
From the mememan5868/2026-NroboB repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the ISS MD SUB-2 design in my own project?
The repository has no license, so all rights stay with mememan5868. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the ISS MD SUB-2 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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