HardLabs

BMS

magwas·steam_powerplant·BMS/BMS.kicad_pcb

BMS PCB layout, top view — open source AVR/Arduino board by magwas

About the BMS PCB

BMS is an open source AVR/Arduino PCB design by magwas, published on GitHub. It is a 2-layer board measuring 260 × 18 mm, with 52 components from 21 distinct parts.

Its main chip is the ATmega406-1AA, from the AVR/Arduino family. By type, the board carries 5 LEDs, 4 diodes, 3 transistors, 2 resistors, 1 IC and 1 capacitor.

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

From the project

Rugged watercooled laptop with steampunk design

An Open Hardware RISC-V based rugged, watercooled laptop with steampunk design.

- based on the HiFive Unmatched Rev B board, because it is RISC-V - actually useable - waterproof - shock proof - long battery life - water cooled - steampunk

I wanted a RISC-V laptop. I usually carry my laptop in my car, and sometimes things happen to it. So I choose ruggedness over lightness. The laptop is my single most important object, so I looked up the parts I need, without regard to their price. Well, later I added up the prices, and got a little shock. But I have already ordered everything, so...

Main components on the BMS

ATmega406-1AA

BMS bill of materials (BOM)

52 components, 21 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ATmega406-1AA
U1
3
TPCA8120,L1Q
Q1, Q2, Q3
9
KAM15AR71H104KT
0.1 u
CP1, CP2, CP3, CP4, CRESET1, CReg1, Ci1, Ci2 +1
1
KGM21AR71H105JU
1 u
CReg2
1
Conn_01x04_Pin
JTag0
5
ESR01MZPF20R0
20
RLED-0, RLED-1, RLED-2, RLED-3, RLED-4
5
MCA12060D5000BP500
500
RP0, RP1, RP2, RP3, RP4
2
RCV20102M20JNEF
2.2 M
RPU1, RPU2
1
Y14880R00500B9R
5 m
RSense0
3
560112110033
1 M
Rcf1, Rdf1, Rpf1
2
APC0603T100RZ
100
Rni1, Rpi1
2
71-PTN0402Y5000BST1
1 k
Rnni1, Rppi1
1
71-PTN0402Y5000BST1
1 k
Rpc1
4
214650-1633
10 k
TH1, TH2, TH3, TH4
5
ASCKCA00-BU4V4020502
LED
LED0, LED1, LED2, LED3, LED4
1
BAV70,215
BAV70
D1
1
BAS516,135
BAS516
D2
2
CDBQR0130L-HF
D3, D5
1
KGM21AR71H105JU
1 u
C1
1
CRCW040210K0FKEDC
10 k
R1
Show 1 more
QtyPartRefs
1
ERJ-U0XF10R0Y
10
RN1

BMS design files

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

BMS: common questions

What microcontroller does the BMS use?

The BMS is built around the ATmega406-1AA, from the AVR/Arduino family.

How big is the BMS PCB?

The BMS measures 260 × 18 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the BMS?

52 components, from 21 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 BMS design files?

From the magwas/steam_powerplant 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 BMS design in my own project?

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

Can I test firmware for the BMS 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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