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Bifrost left

hringdrifi·bifrost·pcb/left_kicad/bifrost_left.kicad_pcb

Bifrost left PCB layout, top view — open source Nordic nRF board by hringdrifi

About the Bifrost left PCB

Bifrost left is an open source Nordic nRF PCB design by hringdrifi, published on GitHub under the CERN-OHL-P-2.0 license. It is a 2-layer board measuring 142.9 × 80.3 mm, with 40 components from 29 distinct parts.

Its main chip is the MDBT50Q-1MV2, from the Nordic nRF family. Other key parts include the SRV05-4 and TP4057. By type, the board carries 13 resistors, 8 capacitors, 3 ICs, 3 transistors, 3 inductors and 2 test points.

From the project

KiCad source files for the left half of Bifrǫst.

KiCad source files for the left half of Bifrǫst.

This is an incomplete and unverified work in progress. Do not order boards or rely on this design without independently reviewing the schematic, layout, footprints, mechanical fit, and electrical connections.

The project was initially created from a Smiðr export, then received substantial additional modifications. It is no longer an unmodified Smiðr export.

Main components on the Bifrost left

SRV05-4MDBT50Q-1MV2TP4057

Bifrost left bill of materials (BOM)

40 components, 29 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
SRV05-4
U1
1
MDBT50Q-1MV2
U2
1
TP4057
U3
2
AO3401A
Q1, Q3
1
2N7002
Q2
1
32.768KHZ
32.768kHz
X1
1
HRO_TYPE-C-31-M-12
J1
1
C883131
PTC 1A hold
F1
1
MSK12C02-HB
S1
1
TS24CA
T1
1
SWDIO
TP1
1
SWDCLK
TP2
1
C19189741
Red
CHG1
1
E6C1209RGBC3UDA
D1
1
1N5819WS
D2
1
10UH
10uH
L1
2
BLM15PX121SN1D
L2, L3
4
10U
10u
C1, C2, C3, C8
2
12PF
12pF
C4, C5
1
100N
100n
C6
Show 9 more
QtyPartRefs
1
4.7U
4.7u
C7
2
5.1K
5.1k
R1, R2
2
4.7K
4.7k
R3, R4
2
1k
R5, R9
2
27
R6, R7
2
10K
10k
R8, R12
1
3.3K
3.3k
R10
1
100
R11
1
100K
100k
R13

Bifrost left design files

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

Bifrost left: common questions

What microcontroller does the Bifrost left use?

The Bifrost left is built around the MDBT50Q-1MV2, from the Nordic nRF family.

How big is the Bifrost left PCB?

The Bifrost left measures 142.9 × 80.3 mm, has 2 copper layers and is 1.2 mm thick.

How many components are on the Bifrost left?

40 components, from 29 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 Bifrost left design files?

From the hringdrifi/bifrost 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 Bifrost left design in my own project?

Yes, under the terms of its CERN-OHL-P-2.0 license, which hringdrifi chose for the repository.

Can I test firmware for the Bifrost left without the hardware?

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

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