8 layers75 × 79 mm
6 layers75 × 78.4 mm
Poe backplate
dotstartech/wall-panel445Wall mounted 4 inch touch display panel with CM4 inside
- Size
- 75 × 78.4 mm
- Copper layers
- 6
- Thickness
- 1.6 mm
- Parts
- 125
- Nets
- 95
- Pads
- 321
- Tracks, vias
- 602, 111
- Pours
- 12
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 9 Jan 2026
- Updated
- 24 Aug 2026
Overview
Poe backplate is an open-source printed circuit board by dotstartech, from the dotstartech/wall-panel repository on GitHub. It is a 6-layer board of 75 × 78.4 mm with 125 parts on 95 nets, routed with 602 tracks and 111 vias.
It is built around the LAN9500A-ABZJ, HY931147C and LP38693MP-3.3, with the USBLC6-2SC6, BLM21PG221SN1D and 218-2LPSTRF among its other parts. Its parts include 26 capacitors, 19 resistors, 5 ICs, 4 diodes and 3 connectors. It belongs with the computers and single-board computers and lEDs and displays boards of this library.
Main components
12
LAN9500A-ABZJ
QFN-56-EP(8x8)0℃~+70℃ 1.2V、2.5V、3.3V 480Mbps USB 2.0 USB to Ethernet QFN-56-EP(8x8) USB Converters ROHSMicrochip TechnologyUSB Converters
HY931147C
插件1 RJ45 Jack Right Angle Shielded With Contact Spring With LED With PoE 插件 Ethernet Connectors / Modular Connectors (RJ45 RJ11) ROHSHANRUNEthernet Connectors / Modular Connectors (RJ45 RJ11)
LP38693MP-3.3
SOT-223-5-40℃~+125℃@(Tj) 1 10V 3.3V 500mA 550mV@(0.5A) 55dB@(120Hz) 55uA Fixed Positive Under Voltage Lockout、Over Current Protection、Over Temperature Protection、Enable SOT-223-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
BLM21PG221SN1D
08051 220Ω@100MHz 2A 45mΩ ±25% 0805 Ferrite Beads ROHSMurataFerrite Beads
218-2LPSTRF
SMD,P=1.27mm-55℃~+85℃ 1.27mm 2 24V 25mA Black SPST Slide, Recessed SMD,P=1.27mm DIP Switches ROHSCTS Electronic ComponentsDIP SwitchesAG5405
Through hole- New Arrivals ROHSSilver TelecomUncategorised
B0540WS
SOD-323Schottky Diodeshongjiacheng
CBM453215U101T
1812-55℃~+125℃ 1 100Ω@100MHz 20mΩ 6A ±25% 1812 Ferrite Beads ROHSGuangdong Fenghua Advanced Tech (FH)Ferrite Beads
ECS-250-18-36B2-CTY-TR
SMD2520-4P-30℃~+85℃ 18pF 25MHz 50Ω ±10ppm ±20ppm SMD2520-4P Crystals ROHSECSCrystals
RCLAMP0524PATCT
DFN-10(1x2.5)-55℃~+125℃ 0.3pF 150W 15V 1uA 5A@8/20us 5V 6V ESD Four channels IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 DFN-10(1x2.5) ESD and Surge Protection (TVS/ESD) ROHSSEMTECHESD And Surge Protection (TVS/ESD)
SS54F
SMAF-50℃~+125℃ 1 Independent 150A 40V 500uA@40V 550mV@5A 5A SMAF Schottky Diodes ROHSMDDSchottky Diodes
README
README.mdWall Panel
Wall Panel is a 4-inch wall-mounted touch display panel powered by Raspberry Pi Compute Module 4 (CM4). It features a 720x720 IPS multitouch display and can be used as a Home Assistant dashboard or any other embedded display application.
Display
We use this display, but touch variant. It is 4 lane MIPI with i2c touch controller.
- Display driver: ST7703
- Touch driver: FT6336U
Possible use cases
- Home Assistant Dashboard. Perfect for wall-mounted smart home control panels with full touch interaction and high-resolution display.
- Information Display. Show weather, calendar, news, or any other dynamic content in your home or office.
- Control Panel. Use as a centralized control interface for IoT devices, lighting, or home automation systems.
- Embedded Display. Build custom applications using the full power of Raspberry Pi OS or any Linux distribution on the CM4.
List of features
- 720x720 IPS Display with multitouch support
- Raspberry Pi Compute Module 4 as the main brain
- External RTC for accurate timekeeping
- USB-C for data and power
- USB-OTG support for device mode
- Action Button for user interaction
- WiFi connectivity
- 40-pin GPIO Header for Raspberry Pi compatibility
- SD Card slot for storage expansion
- Micro HDMI output for external displays
- EEPROM Flashing capability for firmware updates
- Backplane Connector for power and data from the wall and future PoE backplate support
Parts
125| Qty | Value | Footprint | References |
|---|---|---|---|
| 22 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP1, TP2, TP3, TP10, TP11, TP12, TP13, TP14, TP15, TP16, TP17, TP18, TP19, TP20, TP21, TP22 +6 |
| 17 | 100nF | Capacitor_SMD:C_0402_1005Metric | C1, C2, C3, C4, C5, C6, C7, C8, C11, C12, C13, C14, C16, C20, C22, C26 +1 |
| 4 | 49.9 | Resistor_SMD:R_0402_1005Metric | R15, R16, R17, R18 |
| 4 | MountingHole_Pad | 9774030151R:9774030151R | H1, H2, H3, H4 |
| 3 | 3.3K | Resistor_SMD:R_0402_1005Metric | R6, R12, R13 |
| 3 | BLM21PG221SN1D | Resistor_SMD:R_0805_2012Metric | FB1, FB2, FB3 |
| 2 | 0 | Resistor_SMD:R_0402_1005Metric | R3, R5 |
| 2 | 12K | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 2 | 1uF | Capacitor_SMD:C_0805_2012Metric | C17, C19 |
| 2 | 24pF | Capacitor_SMD:C_0402_1005Metric | C15, C18 |
| 2 | 5.1K | Resistor_SMD:R_0402_1005Metric | R9, R11 |
| 2 | 56K | Resistor_SMD:R_0402_1005Metric | R8, R10 |
| 2 | USB_C_Receptacle_USB2.0_14P | Connector_USB:USB_C_Receptacle_G-Switch_GT-USB-7051x | J3, J4 |
| 1 | 10 | Resistor_SMD:R_0402_1005Metric | R14 |
| 1 | 10K | Resistor_SMD:R_0402_1005Metric | R7 |
| 1 | 10nF | Capacitor_SMD:C_0805_2012Metric | C24 |
| 1 | 1M | Resistor_SMD:R_0402_1005Metric | R4 |
| 1 | 1uF | Capacitor_SMD:C_0402_1005Metric | C10 |
| 1 | 1uF | Capacitor_SMD:C_0603_1608Metric | C21 |
| 1 | 218-2LPSTRF | 218-2LPSTRF:2182LPSTRF | S6 |
| 1 | 22nF | Capacitor_SMD:C_0603_1608Metric | C23 |
| 1 | 470µF | Capacitor_SMD:CP_Elec_6.3x7.7 | C25 |
| 1 | 50K | Resistor_SMD:R_0402_1005Metric | R19 |
| 1 | 93LC66AT-I_OT | 93LC66AT-I_OT:SOT95P270X145-6N | IC2 |
| 1 | AG5405 | AG5405:AG5405 | POE1 |
| 1 | B0540WS | Diode_SMD:D_SOD-323 | D2 |
| 1 | CBM453215U101T | Resistor_SMD:R_1812_4532Metric | FB4 |
| 1 | Conn_02x12_Counter_Clockwise | Connector_PinHeader_2.54mm:PinHeader_2x12_P2.54mm_Vertical | J5 |
| 1 | ECS-250-18-36B2-CTY-TR | ECS-250-18-36B2-CTY-TR:ECS2501836B2CTYTR | Y1 |
| 1 | G*** | kibuzzard-68DA50CF | kibuzzard-68DA50CF |
| 1 | G*** | kibuzzard-68DA5448 | kibuzzard-68DA5448 |
| 1 | G*** | kibuzzard-68D6D564 | kibuzzard-68D6D564 |
| 1 | G*** | kibuzzard-697B6E24 | kibuzzard-697B6E24 |
| 1 | G*** | kibuzzard-6A7327CD | kibuzzard-6A7327CD |
| 1 | G*** | kibuzzard-6978AB6C | kibuzzard-6978AB6C |
| 1 | G*** | kibuzzard-6A416FFB | kibuzzard-6A416FFB |
| 1 | G*** | kibuzzard-68DA50D5 | kibuzzard-68DA50D5 |
| 1 | G*** | kibuzzard-697B6E2E | kibuzzard-697B6E2E |
| 1 | G*** | kibuzzard-6A7327D6 | kibuzzard-6A7327D6 |
| 1 | G*** | kibuzzard-68DA54A3 | kibuzzard-68DA54A3 |
| 1 | G*** | kibuzzard-68DA50DD | kibuzzard-68DA50DD |
| 1 | G*** | kibuzzard-68D6D404 | kibuzzard-68D6D404 |
| 1 | G*** | kibuzzard-6985C4FD | kibuzzard-6985C4FD |
| 1 | G*** | kibuzzard-68DA6D8B | kibuzzard-68DA6D8B |
| 1 | G*** | kibuzzard-697F8524 | kibuzzard-697F8524 |
| 1 | G*** | kibuzzard-6A58C49B | kibuzzard-6A58C49B |
| 1 | G*** | kibuzzard-68DAA144 | kibuzzard-68DAA144 |
| 1 | G*** | kibuzzard-68DA5225 | kibuzzard-68DA5225 |
| 1 | G*** | kibuzzard-68DA50C8 | kibuzzard-68DA50C8 |
| 1 | G*** | kibuzzard-6A58C460 | kibuzzard-6A58C460 |
| 1 | G*** | kibuzzard-6978AB59 | kibuzzard-6978AB59 |
| 1 | G*** | kibuzzard-6A416FC5 | kibuzzard-6A416FC5 |
| 1 | G*** | kibuzzard-68DA5505 | kibuzzard-68DA5505 |
| 1 | G*** | kibuzzard-6985C516 | kibuzzard-6985C516 |
| 1 | G*** | kibuzzard-6978AB9F | kibuzzard-6978AB9F |
| 1 | G*** | kibuzzard-68DA512A | kibuzzard-68DA512A |
| 1 | G*** | kibuzzard-6A266BBE | kibuzzard-6A266BBE |
| 1 | G*** | kibuzzard-6A58C4AC | kibuzzard-6A58C4AC |
| 1 | G*** | kibuzzard-6A58C3F0 | kibuzzard-6A58C3F0 |
| 1 | G*** | kibuzzard-68DA5440 | kibuzzard-68DA5440 |
| 1 | G*** | kibuzzard-697F85B0 | kibuzzard-697F85B0 |
| 1 | G*** | kibuzzard-6A266BA6 | kibuzzard-6A266BA6 |
| 1 | GREEN | LED_SMD:LED_0402_1005Metric | D1 |
| 1 | HY931147C | HY931147C:HY931147C | U2 |
| 1 | LAN9500A-ABZJ | LAN9500A-ABZJ:QFN50P800X800X100-57N-D | IC1 |
| 1 | LP38693MP-3.3 | Package_TO_SOT_SMD:SOT-223-5 | U1 |
| 1 | RCLAMP0524PATCT | RCLAMP0524PATCT:RCLAMP0524PATCT | D4 |
| 1 | SS54F | SS54F-HF:SODFL4626X120N | D3 |
| 1 | SolderJumper_3_Open | Jumper:SolderJumper-3_P1.3mm_Open_RoundedPad1.0x1.5mm_NumberLabels | JP1 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U5 |
| 1 | power reset | Button_Switch_SMD:SW_SPST_PTS810 | SW1 |
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Add on template
dotstartech/wall-panel
Wall mounted 4 inch touch display panel with CM4 inside
4 parts445
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Questions
How big is the Poe backplate PCB?
It measures 75 × 78.4 mm and has 6 copper layers, 1.6 mm thick.
What parts does the Poe backplate use?
125 parts, built around the LAN9500A-ABZJ, HY931147C, LP38693MP-3.3 and USBLC6-2SC6. 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 Poe backplate KiCad files?
From the dotstartech/wall-panel repository on GitHub, at the commit this page was made from: the board is pcb/poe-backplate/poe-backplate.kicad_pcb and its schematic pcb/add-on-nfc/add-on-nfc.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Poe backplate design in my own project?
Its repository states no licence, so its author keeps all rights: ask dotstartech before reusing the design.