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Alakol

richardeoin·alakol·hardware/alakol.kicad_pcb

Alakol PCB layout, top view — open source STM32 board by richardeoin
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About the Alakol PCB

Alakol is an open source STM32 PCB design by richardeoin, published on GitHub. It is a 4-layer board measuring 78 × 56 mm, with 118 components from 50 distinct parts.

Its main chip is the STM32H743VIT6, from the STM32 family. Other key parts include the KSZ8081RNX, MS5607-02BA03, LTC2064IMS8, NCP1117-3.3_SOT223 and AD8226. By type, the board carries 46 resistors, 37 capacitors, 9 ICs, 6 diodes, 5 crystals and 5 connectors.

It belongs with the sensors designs in this gallery.

From the project

A specialised datalogger for superpressure balloon manufacturing

Omron 2SMPP-02 gauge pressure sensor Resistive wheatstone bridge TI REF3325 + LTC2064 to provide constant current source AD8226 In-Amp MS5607 Sensor Ambient Pressure Board Temperature (close to 2SMPP-02) K-Type Thermocouple (Al/Ch) AD8226 In-Amp Microcontroller STM32H743VIT6 KSZ8081RN Ethernet PHY DC Power Jack Centre +ve 4.6V - 18V Or 4xAA batteries! Fits in existing Omron M2 housing Dimensions: 78.0mm x 56.0mm (3.07" x 2.20")

Alakol, from the project README
From the project README

Main components on the Alakol

KSZ8081RNXSTM32H743VIT6MS5607-02BA03LTC2064IMS8NCP1117-3.3_SOT223AD8226REF3325AIDCK2SMPP-02

Alakol bill of materials (BOM)

118 components, 50 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
KSZ8081RNX
KSZ8081RNx
IC1
1
STM32H743VIT6
IC2
1
MS5607-02BA03
IC3
1
LTC2064IMS8
U1
1
NCP1117-3.3_SOT223
U2
2
AD8226
U3, U6
1
REF3325AIDCK
U4
1
2SMPP-02
U5
1
BC817
Q1
1
BSS138BK
Q2
2
PART
X1, X4
1
DSC6083
Y1
1
25MHZ
25MHz
Y2
1
SMD_XTAL_38.4_MHZ
SMD_XTAL_38.4_MHz
Y3
1
CONN_01X08
CONN_01x08
J1
1
08B0-1X1T-06-F
J2
1
Side PCB
J3
1
Barrel_Jack_Switch
J4
1
SAM13165
SWD
P1
1
PEC11R-4215F-N0024
Rotary_Encoder
SW1
Show 30 more
QtyPartRefs
2
SW411
SWITCH_DPST
SW2, SW3
1
1568-1306
K Type
TC1
1
LED-red
D1
1
LED-orange
D2
1
LED-blue
D3
1
RB160MM-60TR
D4
2
SM4007PL-TP
D5, D6
4
BLM15EG221SN
FB1, FB2, FB3, FB4
4
1nF 5%
C1, C11, C31, C37
15
100NF
100nF
C2, C4, C10, C14, C15, C19, C20, C22 +7
2
1µF
C3, C9
7
2.2µF
C5, C17, C18, C21, C23, C25, C33
4
10NF
10nF
C6, C12, C13, C34
2
10µF
C7, C8
1
100PF
100pF
C16
2
18PF
18pF
C26, C27
3
10kΩ 0.1%
R1, R3, R11
3
330Ω
R2, R31, R35
5
10kΩ 1%
R4, R10, R12, R40, R43
2
100kΩ
R5, R39
6
1kΩ
R6, R29, R32, R33, R36, R41
1
2.6kΩ
R7
2
100Ω
R8, R42
1
27kΩ 1%
R9
1
6.8kΩ 1%
R13
12
10kΩ
R14, R15, R16, R17, R18, R19, R20, R23 +4
7
22Ω
R21, R22, R24, R25, R26, R27, R28
1
6k49Ω
R30
1
1MΩ
R44
1
0Ω
R45

Alakol design files

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

Alakol: common questions

What microcontroller does the Alakol use?

The Alakol is built around the STM32H743VIT6, from the STM32 family.

How big is the Alakol PCB?

The Alakol measures 78 × 56 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Alakol?

118 components, from 50 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 Alakol design files?

From the richardeoin/alakol repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Alakol design in my own project?

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

Can I test firmware for the Alakol 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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