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Safecast Air Module

Safecast·Solarcast·air-module/kicad/air-module.kicad_pcb

Safecast Air Module layout, top view — open source Nordic nRF board by Safecast

About the Safecast Air Module

Safecast Air Module is an open source Nordic nRF PCB design by Safecast, published on GitHub under the Custom license license. It is a 2-layer board measuring 71.1 × 41.2 mm, with 38 components from 17 distinct parts.

Its main chip is the nRF52832, from the Nordic nRF family. Other key parts include the Alphasense_OPC-N2, Plantower_PM2.5_PMS_5003, TPS2064, BME280 and TPS79133. By type, the board carries 15 resistors, 10 capacitors, 6 ICs, 3 connectors, 2 jumpers and 2 diodes.

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

From the project

Safecast Solarcast sensor device

* Alphasense (leftmost wire on connector with wire crimp contacts facing up going away from you) Connector: Molex 'Pico Clasp' 6 way Housing, Part Number 501330-0600 1. 5V 2. SPI-SCLK 3. SPI-MISO 4. SPI-MOSI 5. SPI-CS 6. GND

* Plantower, no connector, solder wires 1. 5V 2. GND 3. N/C 4. RX (optional SCL) (add 0 ohm resistors to select between uart and i2c pins) 5. TX (optional SDA) (add 0 ohm resistors to select between uart and i2c pins) 6. N/C 7. comm config (add solder jumpers for pull up/down) 8. comm config (add solder jumpers for pull up/down)

Safecast Air Module, from the project README
From the project README

Main components on the Safecast Air Module

Alphasense_OPC-N2nRF52832Plantower_PM2.5_PMS_5003TPS2064BME280TPS79133

Safecast Air Module bill of materials (BOM)

38 components, 17 distinct parts.

QtyPartRefs
1
Alphasense_OPC-N2
U1
1
nRF52832
U2
1
Plantower_PM2.5_PMS_5003
U3
1
TPS2064
U4
1
BME280
U5
1
TPS79133
U6
1
ARM_SWD_SMALL
J2
1
USB_OTG
P1
1
CONN_01X08
P2
2
JUMPER
JP1, JP2
2
LED
D1, D2
5
100nF
C1, C2, C3, C6, C9
4
10uF
C5, C7, C8, C10
1
10nF
C11
5
10K
R1, R4, R5, R15, R16
2
1K
R2, R3
8
0R
R7, R8, R9, R10, R11, R12, R13, R14

Safecast Air Module design files

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

Safecast Air Module: common questions

What microcontroller does the Safecast Air Module use?

The Safecast Air Module is built around the nRF52832, from the Nordic nRF family.

How big is the Safecast Air Module?

The Safecast Air Module measures 71.1 × 41.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Safecast Air Module?

38 components, from 17 distinct parts. The full bill of materials is listed on this page.

Where can I download the Safecast Air Module design files?

From the Safecast/Solarcast repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Safecast Air Module design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

Can I test firmware for the Safecast Air Module 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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