2 layers126 × 47.8 mm
4 layers35 × 35 mm
BTZ EndDevice
GoodByte-Hardware/BTZ-EndDeviceLow-power wireless sensor board based on the nRF54L15 for BLE Mesh, Thread/Matter and Zigbee
- Size
- 35 × 35 mm
- Copper layers
- 4
- Thickness
- 1.66 mm
- Parts
- 56
- Nets
- 67
- Pads
- 245
- Tracks, vias
- 589, 161
- Pours
- 7
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 28 Oct 2026
- Updated
- 28 Oct 2026
Overview
BTZ EndDevice is an open-source printed circuit board by GoodByte-Hardware, from the GoodByte-Hardware/BTZ-EndDevice repository on GitHub, published under the MIT licence. It is a 4-layer board of 35 × 35 mm with 56 parts on 67 nets, routed with 589 tracks and 161 vias.
It is built around the LTR-329ALS-01, BMI270 and AO3401A, with the BAT-HLD-001-TR and 59453-051110ECHLF among its other parts. Its parts include 19 capacitors, 10 resistors, 5 connectors, 4 ICs and 4 inductors. It belongs with the nRF52 and nRF5x boards of this library.
Main components
5
LTR-329ALS-01
VDFN-4-30℃~+70℃ 16bit 2.4V~3.6V 64klx I2C Light Intensity VDFN-4 Ambient Light Sensors ROHSLite-OnAmbient Light Sensors
BMI270
LGA-14(2.5x3)-40℃~+85℃ 1.71V~3.6V 16bit 2KB 3.5uA Accelerometer Gyroscope SPI、I2C X,Y,Z X,Y,Z ±16g ±2000dps LGA-14(2.5x3) Accelerometers ROHSBosch SensortecAccelerometers
AO3401A
SOT-231 P-Channel 14nC@10V 30V 47mΩ@10V、60mΩ@4.5V、85mΩ@2.5V 4A 55pF 645pF 80pF 900mV SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETsBAT-HLD-001-TR
SMT-SMDSMT-SMD Button And Strip Battery Connector ROHSTE ConnectivityButton And Strip Battery Connector
59453-051110ECHLF
SMD,P=0.5mm,卧贴-55℃~+85℃ 0.3mm 0.5mm 0.88mm 5P Bottom Contact Copper alloy Gold Slide Lock Surface Mount, Right Angle SMD,P=0.5mm,卧贴 FFC, FPC (Flat Flexible) Connector Assemblies ROHSAmphenolFFC, FPC (Flat Flexible) Connector Assemblies
README
README.md
BLE/Thread/Zigbee EndDevice
Low-power wireless sensor board based on the nRF54L15 for BLE Mesh, Thread/Matter and Zigbee
ABOUT
BTZ-EndDevice is a battery-powered sensor node designed by GoodByte to compare BLE Mesh, Thread/Matter and Zigbee on the same hardware.
SPECIFICATIONS
| Parameter | Value |
|---|---|
| SoC | Nordic nRF54L15 |
| Sensors | STS4x (temperature), LTR-329ALS-01 (light), BMI270 (IMU), switchable power |
| Power | CR2032 coin cell or external supply, jumper JP1 for current measurement |
| Interfaces | SWD, GPIO headers, NFC antenna connector, button, LED |
| PCB | 35.0 × 35.0 mm, 4 layers |
DESIGN FILES
All files below are generated by KiBot in CI.
| File | Description |
|---|---|
| Schematic | Full schematic (PDF) |
| BOM (CSV) · BOM (HTML) | Bill of materials |
| Interactive BOM | Component placement viewer (download and open in a browser) |
| Pick and place | Component positions for assembly |
| Assembly drawing | Assembly drawing (PDF) |
| Gerbers | Fabrication files (ZIP) |
| Fabrication drawing | Stackup, drill and fabrication notes (PDF) |
| 3D model | Board model (STEP) |
| Test points | Test point positions and nets (CSV) |
DIRECTORY STRUCTURE
.
├─ 3D # STEP model of the board
├─ HTML # Generated web page with all outputs
├─ Images # Renders
│
├─ kibot_resources # External resources for KiBot
│ ├─ colors # Color theme for KiCad
│ ├─ fonts # Fonts used in the project
│ ├─ scripts # External scripts used with KiBot
│ └─ templates # Templates for KiBot generated reports
│
├─ kibot_yaml # KiBot YAML config files
├─ KiRI # KiRI (visual schematic and PCB diff between revisions)
│
├─ Library # KiCad footprint and symbol libraries
│ ├─ 3D Model # Component 3D models
│ ├─ Footprint # Footprint libraries
│ └─ Symbol # Symbol libraries
│
├─ Logos # Logos
│
├─ Manufacturing # Assembly and fabrication documents
│ ├─ Assembly # Assembly documents (BOM, pick and place, notes)
│ └─ Fabrication # Fabrication documents (Gerbers, drill tables, notes)LICENSE
This project is licensed under the MIT License, see LICENSE.
Parts
56| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 100nF | Capacitor_SMD:C_0402_1005Metric | C2, C3, C5, C13, C15, C16 |
| 3 | AO3401A | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3 |
| 2 | 0R | Resistor_SMD:R_0402_1005Metric | R8, R10 |
| 2 | 10k | Resistor_SMD:R_0402_1005Metric | R4, R5 |
| 2 | 10nF | Capacitor_SMD:C_0402_1005Metric | C7, C18 |
| 2 | 1k | Resistor_SMD:R_0402_1005Metric | R6, R9 |
| 2 | 3,5nH | Inductor_SMD:L_0201_0603Metric | L3, L4 |
| 2 | 300pF | Capacitor_SMD:C_0402_1005Metric | C17, C19 |
| 2 | 470k | Resistor_SMD:R_0402_1005Metric | R1, R7 |
| 2 | Conn_01x10_Pin | Connector_PinHeader_2.54mm:PinHeader_1x10_P2.54mm_Vertical | J2, J4 |
| 1 | 0.3pF | Capacitor_SMD:C_0201_0603Metric | C12 |
| 1 | 1,5pF | Capacitor_SMD:C_0201_0603Metric | C10 |
| 1 | 100nF | Capacitor_SMD:C_0201_0603Metric | C4 |
| 1 | 10μF | Capacitor_SMD:C_0402_1005Metric | C1 |
| 1 | 120R@100MHz | Inductor_SMD:L_0402_1005Metric | FB1 |
| 1 | 1M | Resistor_SMD:R_0402_1005Metric | R2 |
| 1 | 2,2nF | Capacitor_SMD:C_0201_0603Metric | C6 |
| 1 | 2,2μF | Capacitor_SMD:C_0402_1005Metric | C8 |
| 1 | 2,2μF | Capacitor_SMD:C_0201_0603Metric | C9 |
| 1 | 2,7nH | Inductor_SMD:L_0201_0603Metric | L2 |
| 1 | 2pF | Capacitor_SMD:C_0201_0603Metric | C11 |
| 1 | 3,3k | Resistor_SMD:R_0402_1005Metric | R3 |
| 1 | 3,9pF | Capacitor_SMD:C_0201_0603Metric | C14 |
| 1 | 32.768kHz | Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm | Y2 |
| 1 | 32MHz | Crystal:Crystal_SMD_2016-4Pin_2.0x1.6mm | Y1 |
| 1 | 4,7μH | Inductor_SMD:L_0603_1608Metric | L1 |
| 1 | Antenna | RF_Antenna:Texas_SWRA117D_2.4GHz_Left | AE1 |
| 1 | BMI270 | Package_LGA:Bosch_LGA-14_3x2.5mm_P0.5mm | U2 |
| 1 | CR2032 | Library:CR2032holder | BT1 |
| 1 | Conn_01x02_MountingPin | Library:2035580207 | J1 |
| 1 | Conn_01x05_MountingPin | Library:59453051110ECHLF | J5 |
| 1 | Conn_ARM_JTAG_SWD_10 | Connector_PinHeader_1.27mm:PinHeader_2x05_P1.27mm_Vertical | J3 |
| 1 | D_Schottky | Diode_SMD:D_SOD-523 | D1 |
| 1 | LED | LED_SMD:LED_0603_1608Metric | D2 |
| 1 | LOGO | LOGO | G*** |
| 1 | LTR-329ALS-01 | Library:Lite-On_LTR-329ALS-01 | U4 |
| 1 | STS4X | Library:STS4X | U3 |
| 1 | SW_SPDT | Library:SSSS810701 | SW1 |
| 1 | SW_SPST | Library:SW_TS-1088-AR02016 | SW2 |
| 1 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm | JP1 |
| 1 | nRF54L15-QFXX | Package_DFN_QFN:QFN-48-1EP_6x6mm_P0.4mm_EP4.6x4.6mm | U1 |
Questions
How big is the BTZ EndDevice PCB?
It measures 35 × 35 mm and has 4 copper layers, 1.66 mm thick.
What parts does the BTZ EndDevice use?
56 parts, built around the LTR-329ALS-01, BMI270, AO3401A and BAT-HLD-001-TR. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the BTZ EndDevice KiCad files?
From the GoodByte-Hardware/BTZ-EndDevice repository on GitHub, at the commit this page was made from: the board is BTZ-EndDevice.kicad_pcb and its schematic BTZ-EndDevice.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the BTZ EndDevice design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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