HardLabs

BATTERY ISOLATOR V1.1

Just-smart-enough·BATTERY_ISOLATOR_V1.1_PCB

BATTERY ISOLATOR V1.1 PCB layout, top view — open source STM32 board by Just-smart-enough

About the BATTERY ISOLATOR V1.1 PCB

BATTERY ISOLATOR V1.1 is an open source STM32 PCB design by Just-smart-enough, published on GitHub under the MIT license. It is a 2-layer board measuring 56 × 50 mm, with 44 components from 28 distinct parts.

Its main chip is the STM32F042F6Px, from the STM32 family. Other key parts include the ACS724xLCTR-30AB, UA78M33QDCYRQ1, UCC27517DBVR and MCP2551-I-SN. By type, the board carries 13 resistors, 8 capacitors, 6 transistors, 5 ICs, 3 test points and 3 diodes.

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

From the project

A prototype 12V RV battery isolator

Main components on the BATTERY ISOLATOR V1.1

STM32F042F6PxACS724xLCTR-30ABUA78M33QDCYRQ1UCC27517DBVRMCP2551-I-SN

BATTERY ISOLATOR V1.1 bill of materials (BOM)

44 components, 28 distinct parts.

QtyPartRefs
1
STM32F042F6Px
U1
1
ACS724xLCTR-30AB
U2
1
UA78M33QDCYRQ1
U3
1
UCC27517DBVR
U4
1
MCP2551-I-SN
U5
2
AO3400A
Q1, Q2
4
DMTH4008LPS-13
Q3, Q4, Q5, Q6
1
HSE
Y2
1
PROG
J3
1
CAN 1
J23
1
CAN TERM
JP1
2
R1K
RV1, RV2
1
MAIN +
TP1
1
AUX +
TP3
1
GND
TP4
1
LED_Dual_Bidirectional
D1
2
C439733
3.0SMCJ20A-13
D3, D4
1
0.1uf
C1
2
2x 22pf
C5, C6
3
0.1uf
C9, C11, C14
Show 8 more
QtyPartRefs
1
0.33uf
C10
1
0.1nF
C15
1
4.7k
R1
1
R120
R2
6
R100
R3, R4, R5, R6, R7, R10
2
R13K
R8, R11
2
R2K
R9, R12
1
R1k
R13

BATTERY ISOLATOR V1.1 design files

The KiCad project lives in the Just-smart-enough/BATTERY_ISOLATOR_V1.1_PCB repository on GitHub; these links point at the commit this page was built from.

BATTERY ISOLATOR V1.1: common questions

What microcontroller does the BATTERY ISOLATOR V1.1 use?

The BATTERY ISOLATOR V1.1 is built around the STM32F042F6Px, from the STM32 family.

How big is the BATTERY ISOLATOR V1.1 PCB?

The BATTERY ISOLATOR V1.1 measures 56 × 50 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the BATTERY ISOLATOR V1.1?

44 components, from 28 distinct parts. The full bill of materials is listed on this page.

Where can I download the BATTERY ISOLATOR V1.1 design files?

From the Just-smart-enough/BATTERY_ISOLATOR_V1.1_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 BATTERY ISOLATOR V1.1 design in my own project?

Yes, under the terms of its MIT license, which Just-smart-enough chose for the repository.

Can I test firmware for the BATTERY ISOLATOR V1.1 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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