HardLabs

Eeg

bradkim06·gas_nordic·hardware/eeg/eeg/eeg.kicad_pcb

Eeg PCB layout, top view — open source Nordic nRF board by bradkim06

About the Eeg PCB

Eeg is an open source Nordic nRF PCB design by bradkim06, published on GitHub under the Apache-2.0 license. It is a 6-layer board measuring 35 × 23 mm, with 71 components from 26 distinct parts.

Its main chip is the ISP2053-AX-RS, from the Nordic nRF family. Other key parts include the NPM1300-QEAA-R, LM2664M6X/NOPB, ADS1299-4PAGR, BMI270 and TPD4E1B06DRLR. By type, the board carries 43 capacitors, 10 resistors, 8 ICs, 4 connectors, 2 diodes and 2 inductors.

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

From the project

gas sensing iot device(nrf52832)

Firmware version 1.0.2 for HHS's portable industrial gas monitor. The application runs on a custom nRF52832 board, measures multiple gases, and transmits real-time readings over Bluetooth® Low Energy. Environmental data is fused with the Bosch BSEC2 library to provide indoor air-quality indicators in addition to electrochemical gas concentrations.

1. Key features 2. Hardware overview 3. Supported measurements 4. Firmware architecture 5. Build and flash 6. Bluetooth protocol 7. Calibration & persistent settings 8. Reference tables 9. License

Main components on the Eeg

NPM1300-QEAA-RLM2664M6X/NOPBADS1299-4PAGRISP2053-AX-RSBMI270TPD4E1B06DRLR

Eeg bill of materials (BOM)

71 components, 26 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
NPM1300-QEAA-R
NPM1300
IC1
1
LM2664M6X/NOPB
LM2664M6X_NOPB
IC2
1
ADS1299-4PAGR
IC3
1
ISP2053-AX-RS
NRF5340
U1
1
BMI270
U2
3
TPD4E1B06DRLR
U3, U4, U5
1
1.25T-3A
Conn_01x03
J1
1
1.25T-4A
Conn_01x04
J2
1
TYPE-C-31-M-12
USB-C Connectors
J3
1
1.25T-6A
Conn_01x06
J4
1
1.25T-2A
Battery
BT1
1
SK12D07VG5
SW_SPDT
SW1
1
19-213/Y2C-CQ2R2L/3T(CY)
LED_Y
D1
1
PRTR5V0U2X,215
PRTR5V0U2X
D2
2
MLP2016H2R2MT0S1
2.2uH
L1, L2
18
GRM155R61A105KE15D
1uF
C1, C2, C8, C10, C14, C23, C26, C27 +10
2
GRM155R61A475MEAAD
4.7uF
C3, C5
6
GRM155R71C104KA88D
100nF
C4, C6, C7, C16, C22, C25
1
GRM155Z71A225KE01D
2.2uF
C9
8
GRM155R61A106ME44D
10uF
C11, C12, C13, C15, C17, C18, C19, C21
Show 6 more
QtyPartRefs
7
GRM155R71H102KA01D
1nF
C20, C38, C39, C40, C41, C42, C43
1
GRM21BR60J107ME15L
100uF
C24
1
RC0402FR-072R2L
2.2
R1
2
RC0402FR-07150KL
150k
R2, R3
1
RC0402FR-071ML
1M
R4
6
RC0402FR-071ML
2.2k
R5, R6, R7, R8, R9, R10

Eeg design files

The KiCad project lives in the bradkim06/gas_nordic repository on GitHub; these links point at the commit this page was built from.

Eeg: common questions

What microcontroller does the Eeg use?

The Eeg is built around the ISP2053-AX-RS, from the Nordic nRF family.

How big is the Eeg PCB?

The Eeg measures 35 × 23 mm, has 6 copper layers and is 1.6 mm thick.

How many components are on the Eeg?

71 components, from 26 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 Eeg design files?

From the bradkim06/gas_nordic 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 Eeg design in my own project?

Yes, under the terms of its Apache-2.0 license, which bradkim06 chose for the repository.

Can I test firmware for the Eeg 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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