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Cryo-Sentinel

jayis1·hardware-design-lab·cryo-sentinel/kicad/cryo-sentinel.kicad_pcb

Cryo-Sentinel PCB layout, top view — open source Nordic nRF board by jayis1

About the Cryo-Sentinel PCB

Cryo-Sentinel is an open source Nordic nRF PCB design by jayis1, published on GitHub. It is a 2-layer board measuring 95 × 65 mm, with 23 components from 21 distinct parts.

Its main chip is the nRF5340-QKAA, from the Nordic nRF family. Other key parts include the FDC2214, MAX31865 top, MAX31865 mid, MAX31865 bot and BME280. By type, the board carries 11 ICs, 3 connectors, 3 capacitors, 2 diodes, 2 resistors and 1 antenna.

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

From the project

Full-cycle hardware device designs — each device in its own subfolder with architecture, schematics, PCB layout, and software stack

Author: jayis1 License: MIT Version: 1.0.0

Cryogenic preservation underpins modern medicine and biology. Human gametes, embryos, stem-cell lines, cord blood, tissue biobanks, and irreplaceable research cultures are stored in liquid-nitrogen (LN2) Dewars at −196 °C. The integrity of these collections depends on a single fragile invariant: the Dewar must always contain enough liquid nitrogen.

Main components on the Cryo-Sentinel

nRF5340-QKAAFDC2214MAX31865 topMAX31865 midMAX31865 botBME280ICM-45686MB85RC04BQ25895MAX17055BG770A-GLS

Cryo-Sentinel bill of materials (BOM)

23 components, 21 distinct parts.

QtyPartRefs
1
nRF5340-QKAA
U1
1
FDC2214
U2
1
MAX31865 top
U3
1
MAX31865 mid
U4
1
MAX31865 bot
U5
1
BME280
U7
1
ICM-45686
U8
1
MB85RC04
U9
1
BQ25895
U10
1
MAX17055
U11
1
BG770A-GLS
U12
1
USB-C 16-pin
J1
1
18650 x2
J2
1
Probe harness
J3
1
LTE main
AE1
1
Piezo 5V
BZ1
1
Amber
D1
1
Red
D2
1
10uF
C1
2
100nF
C2, C3
Show 1 more
QtyPartRefs
2
4k7
R1, R2

Cryo-Sentinel design files

The KiCad project lives in the jayis1/hardware-design-lab repository on GitHub; these links point at the commit this page was built from.

Cryo-Sentinel: common questions

What microcontroller does the Cryo-Sentinel use?

The Cryo-Sentinel is built around the nRF5340-QKAA, from the Nordic nRF family.

How big is the Cryo-Sentinel PCB?

The Cryo-Sentinel measures 95 × 65 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Cryo-Sentinel?

23 components, from 21 distinct parts. The full bill of materials is listed on this page.

Where can I download the Cryo-Sentinel design files?

From the jayis1/hardware-design-lab repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Cryo-Sentinel design in my own project?

The repository has no license, so all rights stay with jayis1. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Cryo-Sentinel 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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