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Spcl midge hardware

TUDelft-SPC-Lab·spcl_midge_hardware·Hardware_Design_v1/PCB/KiCad/rythm_badge_tudelft.kicad_pcb

Spcl midge hardware PCB layout, top view — open source Nordic nRF board by TUDelft-SPC-Lab

About the Spcl midge hardware PCB

Spcl midge hardware is an open source Nordic nRF PCB design by TUDelft-SPC-Lab, published on GitHub under the MIT license. It is a 2-layer board measuring 35 × 47 mm, with 39 components from 25 distinct parts.

Its main chip is the BMD-300-A-R, from the Nordic nRF family. Other key parts include the TP4057-42-SOT26-R, MP34DT05TR-A, MP34DT05-A, AP7345D-3318RH4-7 and ICM-20948. By type, the board carries 18 capacitors, 7 ICs, 5 resistors, 3 connectors, 3 diodes and 2 switches.

It belongs with the wearables, iot & wireless and sensors designs in this gallery.

From the project

Hardware design files for the SPC lab MIDGE wearable devices for in-the-wild social data collection.

Welcome to the Hardware repository of the Social Perceptive Lab for the MIDGE badge.

The Midge badge is a 55x35mm wearable PCB for in-the-wild social data collection. It features - 2 microphones, with adjustable low and high cutoff frequencies - 9 axis IMU - SD card storage - 600mAh battery - BMD 340 processor with a BLE (bluetooth low energy) antenna

Learn more about the project itself here.

Spcl midge hardware, from the project README
From the project README

Main components on the Spcl midge hardware

TP4057-42-SOT26-RMP34DT05TR-AMP34DT05-AAP7345D-3318RH4-7ICM-20948NTS0104BMD-300-A-R

Spcl midge hardware bill of materials (BOM)

39 components, 25 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
TP4057-42-SOT26-R
TP4057
Nanjing Extension Microelectronics
U1
2
MP34DT05TR-A
MP34DT05-A
STMicroelectronics
U2, U7
1
MP34DT05-A
U3
1
AP7345D-3318RH4-7
AP7345D
Diodes Incorporated
U4
1
ICM-20948
TDK
U5
1
NTS0104
NXP
U6
1
BMD-300-A-R
Rigado, Inc.
MOD1
1
10118194-0011LF
10118194-0001LF
Amphenol ICC (FCI)
J1
1
SWD
J2
1
503182-1852
Molex
J3
1
PCM12SMTR
OFF-ON
C&K Switches
SW1
1
PCM13SMTR
OFF-LOW-HI
C&K Switches
SW2
1
SML-D12V1WT86
CHRG_LED
Rohm Semiconductor
D1
1
SML-D12M8WT86
STDBY_LED
Rohm Semiconductor
D2
1
SML-D12D1WT86
LED_Small
Rohm Semiconductor
D3
6
CL10B104KB8NNNC
100nF
Samsung Electro-Mechanics
C1, C9, C14, C15, C16, C18
3
JMK107ABJ106MA-T
10uF
Taiyo Yuden
C2, C3, C5
1
CL10B104KB8NNNC
?
Samsung Electro-Mechanics
C4
6
CL10B105KQ8NNNC
1uF
Samsung Electro-Mechanics
C6, C8, C11, C12, C13, C17
1
1uF
C7
Show 5 more
QtyPartRefs
1
100nF
C10
2
CRCW060310M0FKEAC
10M
Vishay / Dale
R1, R2
1
CRCW06031K00FKEAC
1k?
Vishay / Dale
R4
1
CRCW06032K00FKEAC
2k
Vishay / Dale
R5
1
CRCW06033K00FKEAC
2k
Vishay / Dale
R6

Spcl midge hardware design files

The KiCad project lives in the TUDelft-SPC-Lab/spcl_midge_hardware repository on GitHub; these links point at the commit this page was built from.

Spcl midge hardware: common questions

What microcontroller does the Spcl midge hardware use?

The Spcl midge hardware is built around the BMD-300-A-R, from the Nordic nRF family.

How big is the Spcl midge hardware PCB?

The Spcl midge hardware measures 35 × 47 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Spcl midge hardware?

39 components, from 25 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 Spcl midge hardware design files?

From the TUDelft-SPC-Lab/spcl_midge_hardware repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Spcl midge hardware design in my own project?

Yes, under the terms of its MIT license, which TUDelft-SPC-Lab chose for the repository.

Can I test firmware for the Spcl midge hardware 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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