HardLabs

RoomSensor

mbush91·RoomSensor

RoomSensor PCB layout, top view — open source Nordic nRF board by mbush91

About the RoomSensor PCB

RoomSensor is an open source Nordic nRF PCB design by mbush91, published on GitHub. It is a 2-layer board measuring 40.6 × 22.3 mm, with 26 components from 20 distinct parts.

Its main chip is the nRF52833_QDxx, from the Nordic nRF family. Other key parts include the BME280, LIS2DH12TR and PCF8523T/1,118. By type, the board carries 11 capacitors, 5 resistors, 4 ICs, 2 inductors, 1 crystal and 1 antenna.

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

From the project

- Temp/Humidity sensor -> AHT20-F - ACC -> MMA8452QR1 - BLE Module -> nRF52833-QDAA-R + balun and antenna

Main components on the RoomSensor

nRF52833_QDxxBME280LIS2DH12TRPCF8523T/1,118

RoomSensor bill of materials (BOM)

26 components, 20 distinct parts.

QtyPartRefs
1
nRF52833_QDxx
U1
1
BME280
Bosch Sensortec
U2
1
LIS2DH12TR
STMicroelectronics
U4
1
PCF8523T/1,118
PCF8523T
NXP Semicon
U5
1
X201632MOB4SI
Y1
1
2450AT18A100E
AE1
1
MY-2032-05
Battery_Cell
MYOUNG
BT1
1
FC-12M 32.7680KA-A3
FC-135 32.7680KA-A3
Seiko Epson
XTAL1
1
4.7nH
L1
1
2.2nH
L2
3
100nF X7S
C1, C2, C3
2
0.1uF X7S
C5, C6
1
100pF NP0
C7
2
12pF NP0
C8, C9
1
4.7uF X7R
C10
1
1pF NP0
C11
1
1.2pF NP0
C12
1
RC0402JR-070RL
0
YAGEO
R1
2
RC0402FR-07100KL
100k
YAGEO
R2, R3
2
RC0402JR-0710KL
10k
YAGEO
R4, R5

RoomSensor design files

The KiCad project lives in the mbush91/RoomSensor repository on GitHub; these links point at the commit this page was built from.

RoomSensor: common questions

What microcontroller does the RoomSensor use?

The RoomSensor is built around the nRF52833_QDxx, from the Nordic nRF family.

How big is the RoomSensor PCB?

The RoomSensor measures 40.6 × 22.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the RoomSensor?

26 components, from 20 distinct parts. The full bill of materials is listed on this page.

Where can I download the RoomSensor design files?

From the mbush91/RoomSensor repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the RoomSensor design in my own project?

The repository has no license, so all rights stay with mbush91. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the RoomSensor 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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