HardLabs

Shotpuck

Rixard86·shot-tracker·hardware/kicad/shotpuck.kicad_pcb

Shotpuck PCB layout, top view — open source Nordic nRF board by Rixard86

About the Shotpuck PCB

Shotpuck is an open source Nordic nRF PCB design by Rixard86, published on GitHub. It is a 2-layer board measuring 36 × 34.8 mm, with 27 components from 21 distinct parts.

Its main chip is the MDBT50Q-1MV2, from the Nordic nRF family. Other key parts include the LSM6DSO32TR, MCP73831T-2ACI/OT and BQ29700DSER. By type, the board carries 8 capacitors, 6 resistors, 4 ICs, 4 diodes, 2 transistors and 2 connectors.

It belongs with the power & battery, sensors and rf & radio designs in this gallery.

From the project

A Ø40 × 9.9 mm puck that bolts onto the free face of an Avalon riser weight (the weight's own 5/16-24 bolt, one size longer, goes through its centre), detects each shot with a 6-axis IMU, records the bow's motion around it (accelerometer + gyroscope, 1.0 s before to 0.5 s after r

A Ø40 × 9.9 mm puck that bolts onto the free face of an Avalon riser weight (the weight's own 5/16-24 bolt, one size longer, goes through its centre), detects each shot with a 6-axis IMU, records the bow's motion around it (accelerometer + gyroscope, 1.0 s before to 0.5 s after release), and reports both over BLE to the scoring app.

1. Magnetic connector: done: Samzo PR5L4015-2P-C-F from Electrokit (D18). For the charging cable, solder a 5 V lead to the male part (PR5L5015-2P-C-H) and check with a multimeter which pin meets the square pad (pin 1, +). A reversed lead cannot damage the puck…

Main components on the Shotpuck

MDBT50Q-1MV2LSM6DSO32TRMCP73831T-2ACI/OTBQ29700DSER

Shotpuck bill of materials (BOM)

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

QtyPartRefs
1
MDBT50Q-1MV2
Raytac
U1
1
LSM6DSO32TR
STMicroelectronics
U2
1
MCP73831T-2ACI/OT
Microchip
U3
1
BQ29700DSER
Texas Instruments
U4
1
DMN63D8LDW-7
DMN63D8LDW
Diodes Inc
Q1
1
DMN2004DWK-7
DMN2004DWK
Diodes Inc
Q2
1
Samzo PR5L4015-2P-C-F
Samzo
J1
1
SWD pads
-
J2
1
LIR1254 (plain, spring contacts)
generic
BT1
2
BAT54J
Nexperia
D1, D2
1
PESD5V0S1BB
Nexperia
D3
1
LTST-C193KGKT-5A
LED green 0402
Lite-On
D4
2
GRM188R61A475KE15D
4.7u 10V
Murata
C1, C2
2
GRM155R60J475ME47D
4.7u 6.3V
Murata
C3, C4
4
GRM155R71C104KA88D
100n
Murata
C5, C6, C7, C8
1
0402WGF4702TCE
47k 1%
UNI-ROYAL
R1
1
RC0402FR-071ML
1M
Yageo
R2
1
RC0402FR-07100KL
100k
Yageo
R3
1
RC0402FR-071KL
1k
Yageo
R4
1
RC0402FR-07330RL
330R
Yageo
R7
Show 1 more
QtyPartRefs
1
RC0402FR-072K2L
2.2k
Yageo
R8

Shotpuck design files

The KiCad project lives in the Rixard86/shot-tracker repository on GitHub; these links point at the commit this page was built from.

Shotpuck: common questions

What microcontroller does the Shotpuck use?

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

How big is the Shotpuck PCB?

The Shotpuck measures 36 × 34.8 mm, has 2 copper layers and is 0.8 mm thick.

How many components are on the Shotpuck?

27 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 Shotpuck design files?

From the Rixard86/shot-tracker 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 Shotpuck design in my own project?

The repository has no license, so all rights stay with Rixard86. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Shotpuck 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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