4 layers120 × 70.2 mm
4 layers120 × 70.2 mm
WallNet Main
Jvillaso/WallNet1The WallNet
- Size
- 120 × 70.2 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 90
- Nets
- 74
- Pads
- 288
- Tracks, vias
- 453, 119
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 26 Jan 2026
- Updated
- 24 Apr 2026
Overview
WallNet Main is an open-source printed circuit board by Jvillaso, from the Jvillaso/WallNet repository on GitHub. It is a 4-layer board of 120 × 70.2 mm with 90 parts on 74 nets, routed with 453 tracks and 119 vias.
It is built around the BT832, SAM-M10Q-00B and CPT-9019B-SMT-TR, with the MBR0530 and BSS138 among its other parts. Its parts include 22 capacitors, 20 resistors, 6 diodes, 6 connectors and 4 ICs.
Main components
5
BT832
SMD-16PSMD-16P Bluetooth Modules ROHSFanstelBluetooth Modules
SAM-M10Q-00B
LGA-20Hot start acceleration LGA-20 GNSS Modules ROHSu-bloxGNSS Modules
CPT-9019B-SMT-TR
SMD,9.0x9.0mmSMD,9.0x9.0mm Buzzers ROHSCUIBuzzers
MBR0530
SOD-1231 Independent 30V 5.5A 500mA 550mV@500mA 80uA@30V SOD-123 Schottky Diodes ROHSJiangsu Changjing Electronics Technology (CJ)Schottky Diodes
BSS138
SOT-23-55℃~+150℃ 1 N-channel 1.1Ω@10V、1.2Ω@4.5V 1.2V 1.7nC@10V 17.5pF 340mA 350mW 50V 6.5pF N-Channel SOT-23 MOSFETs ROHShongjiachengMOSFETs
README
PCB/Components/Adafruit-ST25DV16-PCB-main/README.mdAdafruit Adafruit ST25DV16K I2C RFID EEPROM Breakout - STEMMA QT / Qwiic PCB
Click here to purchase one from the Adafruit shop
PCB files for the Adafruit Adafruit ST25DV16K I2C RFID EEPROM Breakout - STEMMA QT / Qwiic.
Format is EagleCAD schematic and board layout
Description
This RFID tag is really unique: it works with mobile phones just like other RFID tags, but you can reprogram it over I2C. The tag shows up as an ISO/IEC 15693 (13.56MHz) chip which is readable by phones and tablets. This could be interesting in situations where you want a tag that can be re-written dynamically when connected to a controller. For example, we did a test where we had a microcontroller write different URLs a few seconds apart, and the mobile phone detected the different URLs one after the other.
License
Adafruit invests time and resources providing this open source design, please support Adafruit and open-source hardware by purchasing products from Adafruit!
Designed by Kattni Rembor for Adafruit Industries.
Creative Commons Attribution/Share-Alike, all text above must be included in any redistribution. See license.txt for additional details.
Parts
90| Qty | Value | Footprint | References |
|---|---|---|---|
| 13 | 10k | Resistor_SMD:R_0603_1608Metric | R1, R3, R5, R104, R105, R106, R107, R108, R201, R203, R204, R205, R206 |
| 10 | 1uF | Capacitor_SMD:C_0603_1608Metric | C104, C202, C203, C204, C205, C206, C207, C208, C209, C210 |
| 4 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C101, C201, C211, C212 |
| 4 | MountingHole | MountingHole:MountingHole_4.3mm_M4 | H1, H2, H3, H4 |
| 4 | Pad | TestPoint:TestPoint_Pad_1.0x1.0mm | TP16, TP17, TP18, TP19 |
| 3 | 240 | Resistor_SMD:R_0603_1608Metric | R2, R4, R109 |
| 3 | LED | Diode_SMD:D_0603_1608Metric | D1, D2, D101 |
| 3 | MBR0530 | Diode_SMD:D_SOD-123 | D201, D202, D203 |
| 2 | 01x04 Molex | Connector_Molex:Molex_PicoBlade_53261-0471_1x04-1MP_P1.25mm_Horizontal | J102, J201 |
| 2 | 100nF | Capacitor_SMD:C_0603_1608Metric | C1, C2 |
| 2 | 10uF | Capacitor_SMD:C_0603_1608Metric | C106, C107 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R101, R102 |
| 2 | Conn_01x05_Pin | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J1, J202 |
| 2 | GND | 5001:KEYSTONE_5001 | TP2, TP15 |
| 1 | 02x12 Connector | Connector_FFC-FPC:Amphenol_F32Q-1A7x1-11024_1x24-1MP_P0.5mm_Horizontal | J203 |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric | C103 |
| 1 | 1k | Resistor_SMD:R_0603_1608Metric | R103 |
| 1 | 2.2 | Resistor_SMD:R_0603_1608Metric | R202 |
| 1 | 2.2uH | ISMC:IND_IMSC1008AZER_VIS | L101 |
| 1 | 4.7uF | Capacitor_SMD:C_0805_2012Metric | C3 |
| 1 | 436331045822 | 436331045822:4363X10458XX | S201 |
| 1 | 47nF | Capacitor_SMD:C_0603_1608Metric | C105 |
| 1 | 68uH | VLS3015CX_680M_H:IND_VLS3015CX-680M-H | L201 |
| 1 | 8.2uF | Capacitor_SMD:C_0805_2012Metric | C102 |
| 1 | BQ25895RTWT | Package_DFN_QFN:Texas_RTW_WQFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm | U101 |
| 1 | BSS138 | Package_TO_SOT_SMD:SOT-23 | Q201 |
| 1 | BT832 | BT832:BLEMODULE_BT832 | U1 |
| 1 | CPT-9019B-SMT-TR | CPT_9019B_SMT_TR:XDCR_CPT-9019B-SMT-TR | U201 |
| 1 | EP_BUSY | 5001:KEYSTONE_5001 | TP9 |
| 1 | EP_CSB | 5001:KEYSTONE_5001 | TP14 |
| 1 | EP_DC | 5001:KEYSTONE_5001 | TP11 |
| 1 | EP_DIN | 5001:KEYSTONE_5001 | TP12 |
| 1 | EP_RESET | 5001:KEYSTONE_5001 | TP10 |
| 1 | EP_SCL | 5001:KEYSTONE_5001 | TP13 |
| 1 | GND | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | GPS_INT | 5001:KEYSTONE_5001 | TP3 |
| 1 | GPS_TP | 5001:KEYSTONE_5001 | TP4 |
| 1 | RX | 5001:KEYSTONE_5001 | TP7 |
| 1 | SAM-M10Q-00B | SAM_M10Q_00B:XCVR_SAM-M10Q-00B | U202 |
| 1 | SCL | 5001:KEYSTONE_5001 | TP5 |
| 1 | SDA | 5001:KEYSTONE_5001 | TP6 |
| 1 | SW | Button_Switch_SMD:SW_Push_1P1T_NO_E-Switch_TL3301NxxxxxG | SW1 |
| 1 | TX | 5001:KEYSTONE_5001 | TP8 |
| 1 | USB_C_Receptacle_PowerOnly_6P | Connector_USB:USB_C_Receptacle_GCT_USB4125-xx-x-0190_6P_TopMnt_Horizontal | J101 |
| 1 | VBat | TestPoint:TestPoint_Pad_D1.0mm | TP101 |
| 1 | VSys | TestPoint:TestPoint_Pad_D1.0mm | TP103 |
| 1 | VUSB | TestPoint:TestPoint_Pad_D1.0mm | TP102 |
The 89 most common of 90 parts.
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Questions
How big is the WallNet Main PCB?
It measures 120 × 70.2 mm and has 4 copper layers, 1.6 mm thick.
What parts does the WallNet Main use?
90 parts, built around the BT832, SAM-M10Q-00B, CPT-9019B-SMT-TR and MBR0530. 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 WallNet Main KiCad files?
From the Jvillaso/WallNet repository on GitHub, at the commit this page was made from: the board is PCB/WallNet_Main/WallNet_Main.kicad_pcb and its schematic PCB/Components/Adafruit-ST25DV16-PCB-main/Adafruit ST25DV16.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the WallNet Main design in my own project?
Its repository states no licence, so its author keeps all rights: ask Jvillaso before reusing the design.