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BAGEL Switch MK1

ISSUIUC·ISS-PCB·boards/BAGEL-MK1/BAGEL-MK1-revA/BAGEL-MK1.kicad_pcb

BAGEL Switch MK1 PCB layout, top view — open source STM32 board by ISSUIUC

About the BAGEL Switch MK1 PCB

BAGEL Switch MK1 is an open source STM32 PCB design by ISSUIUC, published on GitHub. It is a 4-layer board measuring 70 × 70 mm, with 189 components from 32 distinct parts.

Its main chip is the STM32WB1MMC, from the STM32 family. Other key parts include the W25Q16JLUX, XC6223T331GR-G, TCAL9538, ISO7742 and SN74AUP1G74RSER. By type, the board carries 67 resistors, 51 capacitors, 29 ICs, 24 diodes and 18 connectors.

It belongs with the sensors designs in this gallery.

From the project

Building custom flight computers

Archive: Moved to the Archive repo... check it out! 😁 Boards: Contains all of the present boards the team is working on Docs: Contains various documents pertaining to PCB designs Libs: Contains various templates, symbols and footprints that we use when designing PCBs * Scripts: Contains various codes used in PCB development

When you commit changes to the repository, they will generally be found in the Boards folder.

Main components on the BAGEL Switch MK1

W25Q16JLUXSTM32WB1MMCXC6223T331GR-GTCAL9538ISO7742SN74AUP1G74RSERTPS25947

BAGEL Switch MK1 bill of materials (BOM)

189 components, 32 distinct parts.

QtyPartRefs
1
W25Q16JLUX
U101
1
STM32WB1MMC
U102
7
XC6223T331GR-G
XC6223
U103, U203, U303, U403, U503, U603, U703
2
TCAL9538
U104, U105
6
ISO7742
U201, U301, U401, U501, U601, U701
6
SN74AUP1G74RSER
U202, U302, U402, U502, U602, U702
6
TPS25947
U204, U304, U404, U504, U604, U704
1
Conn_01x03
J101
1
Conn_01x04
J102
13
Conn_01x02
J103, J201, J203, J301, J303, J401, J403, J501 +5
1
Conn_01x02
J104
1
Conn_01x02
J105
1
Conn_01x04
J106
7
SDM05U40CSP-7
D101, D201, D301, D401, D501, D601, D701
8
RED
D102, D103, D202, D302, D402, D502, D602, D702
1
ORANGE
D104
7
GREEN
D105, D203, D303, D403, D503, D603, D703
1
BLUE
D106
24
100nF
C101, C103, C104, C105, C108, C109, C201, C202 +16
2
4.7uF
C102, C107
Show 12 more
QtyPartRefs
13
1uF
C106, C204, C205, C304, C305, C404, C405, C504 +5
6
100uF
C206, C306, C406, C506, C606, C706
6
22uF
C207, C307, C407, C507, C607, C707
22
10k
R101, R102, R103, R113, R201, R202, R204, R301 +14
5
470
R104, R105, R106, R107, R108
2
4.7k
R109, R112
2
100k
R110, R111
12
1k
R203, R209, R303, R309, R403, R409, R503, R509 +4
6
680
R205, R305, R405, R505, R605, R705
6
390k
R206, R306, R406, R506, R606, R706
6
300k
R207, R307, R407, R507, R607, R707
6
500k
R208, R308, R408, R508, R608, R708

BAGEL Switch MK1 design files

The KiCad project lives in the ISSUIUC/ISS-PCB repository on GitHub; these links point at the commit this page was built from.

BAGEL Switch MK1: common questions

What microcontroller does the BAGEL Switch MK1 use?

The BAGEL Switch MK1 is built around the STM32WB1MMC, from the STM32 family.

How big is the BAGEL Switch MK1 PCB?

The BAGEL Switch MK1 measures 70 × 70 mm, has 4 copper layers and is 1.6062 mm thick.

How many components are on the BAGEL Switch MK1?

189 components, from 32 distinct parts. The full bill of materials is listed on this page.

Where can I download the BAGEL Switch MK1 design files?

From the ISSUIUC/ISS-PCB repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the BAGEL Switch MK1 design in my own project?

The repository has no license, so all rights stay with ISSUIUC. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the BAGEL Switch MK1 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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