HardLabs

DODGECLOCK

ebertmx·DODGECLOCK·_Electrical/BLE_REMOTE/BLE_REMOTE.kicad_pcb

DODGECLOCK PCB layout, top view — open source Nordic nRF board by ebertmx

About the DODGECLOCK PCB

DODGECLOCK is an open source Nordic nRF PCB design by ebertmx, published on GitHub under the MIT license. It is a 4-layer board measuring 49.3 × 40 mm, with 72 components from 41 distinct parts.

Its main chip is the NRF52832-QFXX, from the Nordic nRF family. Other key parts include the BQ24232RGTR, MIC5528-3.3YMT, MCP65R41, IRF7319TRPBF and SWRU120B. By type, the board carries 28 resistors, 23 capacitors, 5 ICs, 5 diodes, 3 transistors and 2 connectors.

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

From the project

A shot clock system for competitve dodgeball. The system consists of two devices: display and controller.

A shot clock system for competitve dodgeball. The system consists of two devices: display and controller.

A second iteration board is in progress to improve performance and fix the power delivery problems.

The controller devices is held by the ref and used to control the shot clock count.

The device acts as a peripheral/server. It accepts secure connections and provide clock and state information. This device is battery powered; thus, it tries to mimize power at all times. The device prioritizes the built in LCD and user controls over the BLE connection; consequently, the ref always knows…

Main components on the DODGECLOCK

NRF52832-QFXXBQ24232RGTRMIC5528-3.3YMTMCP65R41IRF7319TRPBFSWRU120B

DODGECLOCK bill of materials (BOM)

72 components, 41 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
NRF52832-QFXX
nRF52832-QFxx
U1
1
BQ24232RGTR
U2
1
MIC5528-3.3YMT
MIC5528-3.3YMT-TR
U3
1
MCP65R41
U4
1
IRF7319TRPBF
U5
1
SWRU120B
A1
1
BSS806NEH6327XTSA1
Q1
1
C2150
NPN
Q2
1
C15127
PMOS
Q3
1
CRYSTAL_GND24
Crystal_GND24
Y1
1
C2759981
BUZZER
J5
1
USBC
J8
2
SW_Push
SW1, SW2
4
LED
D1, D2, D3, D4
1
1N4148WX-TP
D5
1
3.8NH
3.8nH
L1
1
10UH
10uH
L2
3
10UF
10uF
C1, C2, C21
2
10PF
10pF
C5, C6
1
0.8PF
0.8pF
C7
Show 21 more
QtyPartRefs
4
100NF
100nF
C8, C12, C14, C22
1
NC
C9
1
100PF
100pF
C10
1
1UF
1uF
C11
4
4.7UF
4.7uF
C13, C16, C20, C24
1
1UF
1uF
C15
3
2.2UF
2.2uF
C17, C18, C25
1
1NF
1nF
C19
1
1UF
1uF
C23
1
2.94K
2.94k
R1
5
C17168
0R
R2, R3, R4, R5, R6
1
4.32K
4.32k
R7
6
2k
R8, R9, R11, R12, R32, R33
2
10K
10k
R10, R24
1
220
R13
3
47K
47k
R14, R15, R16
4
100K
100k
R17, R18, R22, R23
1
300K
300k
R19
1
1k
R20
1
150K
150k
R21
2
5.1K
5.1k
R25, R26

DODGECLOCK design files

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

DODGECLOCK: common questions

What microcontroller does the DODGECLOCK use?

The DODGECLOCK is built around the NRF52832-QFXX, from the Nordic nRF family.

How big is the DODGECLOCK PCB?

The DODGECLOCK measures 49.3 × 40 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the DODGECLOCK?

72 components, from 41 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 DODGECLOCK design files?

From the ebertmx/DODGECLOCK 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 DODGECLOCK design in my own project?

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

Can I test firmware for the DODGECLOCK 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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