HardLabs

Isoblue

oats-center·isoblue·hardware/avenashield/avenashield.kicad_pcb

Isoblue PCB layout, top view — open source STM32 board by oats-center

About the Isoblue PCB

Isoblue is an open source STM32 PCB design by oats-center, published on GitHub under the MIT license. It is a 4-layer board measuring 115 × 78 mm, with 114 components from 50 distinct parts.

Its main chip is the STM32F042C6Tx, from the STM32 family. Other key parts include the USB2514B_Bi, MIC2026-1BM, MCP2551-I-SN, TLC59108xPW and PCA9306. By type, the board carries 50 capacitors, 26 resistors, 14 connectors, 9 ICs, 6 jumpers and 6 diodes.

From the project

ISOBlue Hardware, Avena software, and Deployment Files

The AvenaShield is an expansion board designed to give the Lattepanda CAN and LTE connectivity to be used as an IoT device on ag machines. This board includes two CAN ports, based on the open source hardware board CANtact, and a MiniPCI Express port to connect LTE modems.

Main components on the Isoblue

USB2514B_BiMIC2026-1BMSTM32F042C6TxMCP2551-I-SNTLC59108xPWPCA9306

Isoblue bill of materials (BOM)

114 components, 50 distinct parts.

QtyPartRefs
1
USB2514B_Bi
U1
2
MIC2026-1BM
U2, U3
2
STM32F042C6Tx
U4, U6
2
MCP2551-I-SN
U5, U7
1
TLC59108xPW
U8
1
PCA9306
U11
1
24 MHz
Y1
2
16 MHz
Y2, Y3
1
Bus_PCI_Express_Mini
J1
1
SIM_Card
J2
1
CAN_TRA_HEADER
J3
1
CAN_IMP_HEADER
J4
1
USB Headers Board Top
J5
1
Lattepanda Upper Left Header (I2C and I2S)
J6
1
Lattepanda Upper Right Header (BIOS SPI)
J7
1
Lattepanda Middle Left Header (RS-232)
J8
1
Lattepanda Lower Right Header (Arduino Pins)
J9
1
Lattepanda Lower Left Header (USB)
J10
1
12V DC IN Headers
J11
1
EXT PWR IN
J12
Show 30 more
QtyPartRefs
1
LED_OUT
J13
1
JAE_MM60-EZH059-B5-R650
J14
2
Boot Mode
JP1, JP2
2
Termination enable
JP3, JP4
1
3.3V SRC SEL
JP5
1
5V SRC SEL
JP6
1
MODEM_PWR
D1
1
WWAN
D2
4
LED
D3, D4, D5, D6
2
18pF
C1, C2
9
0.1uF
C3, C4, C5, C6, C7, C8, C9, C10 +1
1
4.7uF
C12
4
100u
C13, C14, C16, C17
3
100n
C15, C18, C19
3
33p
C20, C21, C22
4
18p
C23, C24, C39, C40
14
0.1u
C25, C26, C27, C29, C30, C34, C36, C41 +6
6
4.7u
C28, C31, C35, C44, C47, C51
2
10n
C32, C48
2
1u
C33, C49
1
1M
R1
1
12k
R2
5
100k
R3, R4, R5, R6, R7
2
330
R8, R9
3
47
R10, R11, R12
6
120
R13, R14, R16, R17, R18, R20
2
510
R15, R19
3
4.7k
R21, R22, R23
1
200k
R26
2
4.7k
R27, R28

Isoblue design files

The KiCad project lives in the oats-center/isoblue repository on GitHub; these links point at the commit this page was built from.

Isoblue: common questions

What microcontroller does the Isoblue use?

The Isoblue is built around the STM32F042C6Tx, from the STM32 family.

How big is the Isoblue PCB?

The Isoblue measures 115 × 78 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Isoblue?

114 components, from 50 distinct parts. The full bill of materials is listed on this page.

Where can I download the Isoblue design files?

From the oats-center/isoblue repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Isoblue design in my own project?

Yes, under the terms of its MIT license, which oats-center chose for the repository.

Can I test firmware for the Isoblue 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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