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BioSmartSense-IoT

C12isme945·BioSmartSense-IoT·hardware/design/AD5940_Lab.kicad_pcb

BioSmartSense-IoT PCB layout, top view — open source board by C12isme945

About the BioSmartSense-IoT PCB

BioSmartSense-IoT is an open source PCB design by C12isme945, published on GitHub under the Apache-2.0 license. It is a 4-layer board measuring 60 × 60 mm, with 61 components from 37 distinct parts.

Other key parts include the AD5940BCBZ-RL7, ADP150AUJZ-3.3-R7 and MAX809TEUR+T. By type, the board carries 26 capacitors, 14 resistors, 7 connectors, 5 jumpers, 4 ICs and 2 diodes.

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

From the project

Portable IoT Electrochemical Biosensor & Edge AI Platform for Real-Time Water Quality & Bio-Diagnostics (Hyperbloom September Hackathon 2026)

Water pollution, heavy metal toxicity (Lead $Pb^{2+}$, Cadmium $Cd^{2+}$), and delayed physiological biomarker diagnostics disproportionately impact vulnerable populations. Traditional laboratory electrochemical workstations (potentiostats / impedance analyzers) cost upwards of $5,000–$15,000 USD, requiring bulky benchtop setups and trained operators.

BioSmartSense-IoT bridges this gap: 1. Custom Open Hardware: An ultra-compact, JLCPCB-manufactured 4-layer HDI PCB powered by the Analog Devices AD5940 precision Analog Front End (AFE) with standard Screen Printed Electrode (SPE) sockets. 2.…

BioSmartSense-IoT, from the project README
From the project README

Main components on the BioSmartSense-IoT

AD5940BCBZ-RL7ADP150AUJZ-3.3-R7MAX809TEUR+T

BioSmartSense-IoT bill of materials (BOM)

61 components, 37 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
AD5940BCBZ-RL7
U1
2
ADP150AUJZ-3.3-R7
U2, U3
1
MAX809TEUR+T
U4
1
16MHz CL=8pF OPTION
Y1
1
5V INPUT 4.75-5.25V
J1
1
3V3 SPI HOST
J2
1
GPIO EXPANSION
J3
1
AFE EXPANSION
J4
1
ADC EXPANSION
J5
1
CELL CE RE WE DE GND
J6
1
EXTERNAL TIA
J7
1
PTC 100mA
F1
1
2-WIRE SHORT CE-RE
JP1
1
SHORT WE-DE IF MODE REQUIRES
JP2
1
DUMMY CE
JP3
1
DUMMY RE
JP4
1
DUMMY WE
JP5
1
RESET
SW1
1
SS14
D1
1
GREEN
D2
Show 17 more
QtyPartRefs
9
100NF
100nF
C1, C2, C4, C6, C13, C14, C15, C25 +1
3
10UF
10uF
C3, C5, C20
3
1UF
1uF
C7, C21, C23
3
4.7UF
4.7uF
C8, C22, C24
4
470NF
470nF
C9, C10, C11, C12
1
220nF
C17
2
6.8pF C0G
C18, C19
1
100nF 5%
C26
1
1k
R1
1
10k 0.1% 10ppm
R2
1
100k 0.1%
R3
1
2.2K
2.2k
R4
5
33R
R5, R6, R7, R8, R9
2
10K
10k
R10, R11
1
1k 0.1%
R12
1
10k 0.1%
R13
1
100K
100k
R14

BioSmartSense-IoT design files

The KiCad project lives in the C12isme945/BioSmartSense-IoT repository on GitHub; these links point at the commit this page was built from.

BioSmartSense-IoT: common questions

How big is the BioSmartSense-IoT PCB?

The BioSmartSense-IoT measures 60 × 60 mm, has 4 copper layers and is 1.2 mm thick.

How many components are on the BioSmartSense-IoT?

61 components, from 37 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 BioSmartSense-IoT design files?

From the C12isme945/BioSmartSense-IoT 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 BioSmartSense-IoT design in my own project?

Yes, under the terms of its Apache-2.0 license, which C12isme945 chose for the repository.

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