HardLabs

ScooterBMS

frankie-eight-days·scooterBMS·batteryNode/PCB/batteryNode.kicad_pcb

ScooterBMS PCB layout, top view — open source AVR/Arduino board by frankie-eight-days

About the ScooterBMS PCB

ScooterBMS is an open source AVR/Arduino PCB design by frankie-eight-days, published on GitHub. It is a 2-layer board measuring 48.3 × 66 mm, with 54 components from 26 distinct parts.

Its main chip is the ATtiny2313A-MU, from the AVR/Arduino family. Other key parts include the BQ76925RGER, MIC5060 and LTC2875-DD. By type, the board carries 23 resistors, 15 capacitors, 4 ICs, 4 connectors, 3 diodes and 2 transistors.

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

From the project

A nodal based BMS approach. Each node can monitor 6 cells in series. Motherboard aggregates data and controls everything else.

Main components on the ScooterBMS

BQ76925RGERMIC5060ATtiny2313A-MULTC2875-DD

ScooterBMS bill of materials (BOM)

54 components, 26 distinct parts.

QtyPartRefs
1
BQ76925RGER
U100
1
MIC5060
U101
1
ATtiny2313A-MU
U200
1
LTC2875-DD
U300
1
IRLML9303TRPBF
Q100
1
NMOS
Q101
1
10MHz
Y200
1
cell_taps
J100
1
load
J101
1
ISP_Header
J200
1
Conn_01x06
J300
1
SW_Push
SW200
3
LED
D10, D200, D201
1
Ferrite
FB300
9
1u
C101, C102, C103, C104, C105, C106, C107, C200 +1
1
10u
C108
1
4.7u
C109
2
18p
C201, C202
2
.1u
C203, C204
7
75
R101, R102, R103, R104, R105, R106, R107
Show 6 more
QtyPartRefs
3
0
R108, R207, R208
1
200k
R109
8
10k
R110, R200, R201, R202, R203, R205, R206, R209
1
1M
R204
2
R
R300, R301
1
120
R302

ScooterBMS design files

The KiCad project lives in the frankie-eight-days/scooterBMS repository on GitHub; these links point at the commit this page was built from.

ScooterBMS: common questions

What microcontroller does the ScooterBMS use?

The ScooterBMS is built around the ATtiny2313A-MU, from the AVR/Arduino family.

How big is the ScooterBMS PCB?

The ScooterBMS measures 48.3 × 66 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the ScooterBMS?

54 components, from 26 distinct parts. The full bill of materials is listed on this page.

Where can I download the ScooterBMS design files?

From the frankie-eight-days/scooterBMS repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the ScooterBMS design in my own project?

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

Can I test firmware for the ScooterBMS without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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