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Splitter

kwiecinski·BMS-and-offgrid-photovoltaic-management-system·hardware/Power_and_signal_splitter/splitter.kicad_pcb

Splitter PCB layout, top view — open source board by kwiecinski

About the Splitter PCB

Splitter is an open source PCB design by kwiecinski, published on GitHub under the MIT license. It is a 2-layer board measuring 75 × 45 mm, with 12 components from 11 distinct parts.

Other key parts include the L7812. By type, the board carries 5 connectors, 4 capacitors, 1 IC, 1 fuse and 1 diode.

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

From the project

Project contains BMS for lead-acid batteries and ESP-based board used to pull information from EASUN offgrid inverter, energy meters and sensors. It show informations od displays and use ESPhome to send it to Home Assistant..

1. Photovoltaic modules 2. Concrete base mounting 3. Metalworking and welding mounting bases and angle bar 4. Painting mounting base, angle bars and perforated profiles 5. PV mountings to perforated profiles 6. Assembly of PV installation 7. Fully assembled PV installation 8. Underground Cable Installation and Connection to the Building

B. EASUN inverter - description, installation schematic and wiring #### C. Managemenet system part: - BMS for lead-acid batteries - equalize battery, protect from large charge/discharge currents, montors battery state (temp, voltage) - ESP32 Master module -…

Splitter, from the project README
From the project README

Main components on the Splitter

L7812

Splitter bill of materials (BOM)

12 components, 11 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
L7812
U1
1
SIGNAL_TERMINAL
J2
1
DIODE_PROBE
J6
1
OPTICAL_PROBE
J7
1
UNUSED
J8
1
POWER_SUPPLY
J11
1
Fuse
F1
1
LL4148
1N4007
D1
1
1000u/35V
C1
2
100n
C2, C3
1
100u/16V
C4

Splitter design files

The KiCad project lives in the kwiecinski/BMS-and-offgrid-photovoltaic-management-system repository on GitHub; these links point at the commit this page was built from.

Splitter: common questions

How big is the Splitter PCB?

The Splitter measures 75 × 45 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Splitter?

12 components, from 11 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 Splitter design files?

From the kwiecinski/BMS-and-offgrid-photovoltaic-management-system repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Splitter design in my own project?

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

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