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DiveCAN Head2

QuickRecon·DiveCANHead·EDA/Main PCB/DiveCAN Head2.kicad_pcb

DiveCAN Head2 PCB layout, top view — open source STM32 board by QuickRecon

About the DiveCAN Head2 PCB

DiveCAN Head2 is an open source STM32 PCB design by QuickRecon, published on GitHub under the MIT license. It is a 4-layer board measuring 97.1 × 26 mm, with 135 components from 35 distinct parts.

Its main chip is the STM32L431RCTx, from the STM32 family. Other key parts include the C2871143, C2867820, C468235, ADS1115IDGS and C140321. By type, the board carries 68 resistors, 32 capacitors, 14 diodes, 10 ICs, 3 transistors and 2 connectors.

It belongs with the power & battery and sensors designs in this gallery.

From the project

An open source rebreather head controller

Constructive criticism, suggestions, and pull requests are always welcome.

Documentation for building and flashing firmware can be found under /Documentation/

The board has a battery onboard which can provide full functionality, and can also be provided with power from the CAN bus (1.8-5.5v). The VCC rail will prioritize CAN power and revert to battery if that is unavailable, the VBUS rail can have its power source controlled via the firmware. The VBUS rail can also be fed onto the CAN bus, allowing the board to act as a CAN power source, supplementing the bus power of the shearwater (which…

Main components on the DiveCAN Head2

STM32L431RCTxC2871143C2867820C468235ADS1115IDGSC140321TPS2121

DiveCAN Head2 bill of materials (BOM)

135 components, 35 distinct parts.

QtyPartRefs
1
STM32L431RCTx
U1
1
C2871143
TCAN334
U2
2
C2867820
TPS7A2533DRVR
U3, U4
1
C468235
LMR62014XMF
U5
2
ADS1115IDGS
U6, U7
2
C140321
TPS2115
U8, U9
1
TPS2121
U10
2
C181087
SI2302
Q1, Q2
1
C8545
2N7000
Q3
1
C963524
8MHz
Y1
1
C5155564
Micro_SD_Card_Det1
J1
1
C448647
JTAG
J5
2
C108518
2A
F1, F2
2
C2915176
RST
SW1, SW2
2
C5204745
MBR0520
D1, D12
2
C968191
BZX584C2V4
D2, D3
8
C84256
LED
D4, D5, D6, D7, D8, D9, D10, D11
2
C178259
SMF12A
D13, D14
1
C325966
10u
L1
2
C325469
20p
C1, C2
Show 15 more
QtyPartRefs
22
C14663
100n
C3, C4, C5, C6, C7, C8, C9, C10 +14
6
C96446
10u
C13, C15, C16, C18, C20, C24
2
C1546
100p
C22, C23
25
C25744
10k
R1, R4, R7, R8, R9, R10, R11, R12 +17
3
C25752
12k
R2, R3, R47
2
C25798
75k
R5, R6
7
C25741
100k
R14, R46, R50, R51, R60, R61, R69
5
C25768
22k
R20, R22, R52, R54, R56
3
C25879
2.2k
R21, R23, R67
5
C25087
200
R24, R25, R53, R55, R57
7
C25130
680
R26, R27, R28, R29, R30, R31, R63
1
C23204
560
R35
8
C25905
5.1k
R36, R37, R38, R39, R40, R41, R42, R43
1
C25862
1.2k
R48
1
C25756
15k
R49

DiveCAN Head2 design files

The KiCad project lives in the QuickRecon/DiveCANHead repository on GitHub; these links point at the commit this page was built from.

DiveCAN Head2: common questions

What microcontroller does the DiveCAN Head2 use?

The DiveCAN Head2 is built around the STM32L431RCTx, from the STM32 family.

How big is the DiveCAN Head2 PCB?

The DiveCAN Head2 measures 97.1 × 26 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the DiveCAN Head2?

135 components, from 35 distinct parts. The full bill of materials is listed on this page.

Where can I download the DiveCAN Head2 design files?

From the QuickRecon/DiveCANHead repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the DiveCAN Head2 design in my own project?

Yes, under the terms of its MIT license, which QuickRecon chose for the repository.

Can I test firmware for the DiveCAN Head2 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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