4 layers38.5 × 20 mm
Display module
pulseopen/PulsePhone
An almost fully modular open source phone running off of the DART-MX8M-MINI SoM.
14 parts2GPL-3.0
4 layers70.5 × 128.5 mm
Pulsephone main board
pulseopen/PulsePhone2An almost fully modular open source phone running off of the DART-MX8M-MINI SoM.
- Size
- 70.5 × 128.5 mm
- Copper layers
- 4
- Thickness
- 1.58 mm
- Parts
- 94
- Nets
- 217
- Pads
- 545
- Tracks, vias
- 1,829, 322
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 28 Sep 2025
- Updated
- 4 Oct 2026
Overview
Pulsephone main board is an open-source printed circuit board by pulseopen, from the pulseopen/PulsePhone repository on GitHub, published under the GPL-3.0 licence. It is a 4-layer board of 70.5 × 128.5 mm with 94 parts on 217 nets, routed with 1,829 tracks and 322 vias.
It is built around the XL1509-3.3 and TP4056-42-ESOP8. Its parts include 38 capacitors, 11 resistors, 6 connectors, 5 ICs and 3 diodes. It belongs with the computers and single-board computers boards of this library.
Main components
2README
README.md
PulsePhone — Pulse Modular Phone (MCM-iMX93 SoM)
A modular, open-source smartphone built for repairability, upgradability, and hardware freedom.
Built around the MCM-iMX93 System-on-Module, PulsePhone uses Hirose DF40 board-to-board connectors across all subsystems — keeping modules isolated, swappable, and independently developable.
System Architecture
The Main Board is the hub of the system, hosting the MCM-iMX93 SoM, an onboard DAC, and all signal routing. Every peripheral connects to it via DF40 connectors.
| Module | Interface | Role |
|---|---|---|
| Main Board | DF40 (host) | MCM-iMX93 SoM, DAC, signal routing |
| Display Module | MIPI/LVDS + Touch | Adapter for wide MIPI-DSI display compatability. |
| Camera Module | MIPI CSI-2 | Adapter for wide MIPI-CSI camera compatability. |
| Audio Module | Analog | Amp, speaker, headphone, mic |
Full connector pinout in MBI-Lite Specification.
Project Goals
- One connector standard (DF40) across every module
- Linux (Debian + Phosh), Android, and Ubuntu Touch compatible
- Fully open: KiCad source + mechanical files under GNU GPL-V3.0
Development Notes
Main Board
First prototype! Revamping design. PCB Design in final polishing and bug fix stages!
Wi-Fi / Bluetooth (Former Module)
Deffered to embedded inclusion on main board.
Display Module
PCB Design DONE! This module acts like an adapter, so PulsePhone can have a wide range of MIPI-DSI displays to be compatible with.
Camera Module
Design TBD
Audio Module
Design Started
Mod Extension
Planned inclusion. This extension will include an additional DF40 on the main board for community mods to the phone, like additional features.
Current Project Status
- Almost ready to boot something.
- Working on wrapping up design for main board.
Documentation
- Check out the Wiki
- MBI-Lite Module Connector Specification
- Contributing
- License
License
Hardware released under GNU GPL-V3.0.
Parts
94| Qty | Value | Footprint | References |
|---|---|---|---|
| 28 | 22uF | Capacitor_SMD:C_0805_2012Metric | C1, C10, C11, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23, C24, C25, C26 +12 |
| 16 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | 3.3V1, 5V1, CLK-N1, CLK-P1, D0-N1, D0-P1, D1-N1, D1-P1, D2-N1, D2-P1, D3-N1, D3-P1, GND1, I2C3-SCL1, I2C3-SDA1, VBAT1 |
| 7 | 10uF | Capacitor_SMD:C_0603_1608Metric | C2, C3, C6, C12, C13, C33, C34 |
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2_DIN965_Pad | H1, H2, H3, H4 |
| 3 | Conn_2Rows-35Pins_MountingPin | DF40-34P:HIROSE_DF40C-34DS-0.4V_58_ | J3, J4, J5 |
| 2 | 10 kΩ | Resistor_SMD:R_0805_2012Metric | R5, R6 |
| 2 | 2.2uF | Capacitor_SMD:C_0603_1608Metric | C4, C5 |
| 2 | 5.1 kΩ | Resistor_SMD:R_0805_2012Metric | R2, R3 |
| 2 | D_Schottky | Diode_SMD:D_SMA | D1, D4 |
| 2 | LOGO | LOGO | G***, G*** |
| 2 | TestPoint | TestPoint:TestPoint_Pad_1.0x1.0mm | AUD-L1, AUD-R1 |
| 1 | 1 MΩ | Resistor_SMD:R_0805_2012Metric | R10 |
| 1 | 1.1 MΩ | Resistor_SMD:R_0805_2012Metric | R7 |
| 1 | 1.2 kΩ | Resistor_SMD:R_0805_2012Metric | R4 |
| 1 | 1.5uH | Inductor_SMD_Wurth:L_Wurth_WE-LQSH-4020 | L3 |
| 1 | 100nF | Capacitor_SMD:C_0603_1608Metric | C43 |
| 1 | 174 kΩ | Resistor_SMD:R_0805_2012Metric | R9 |
| 1 | 1Mega Ohm | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1 |
| 1 | 1kΩ | Resistor_SMD:R_0805_2012Metric | R8 |
| 1 | 1uH | Inductor_SMD_Wurth:L_Wurth_WE-LQSH-4020 | L2 |
| 1 | 47uh | Inductor_SMD:L_KOHERelec_MDA7030 | L1 |
| 1 | 51 kΩ | Resistor_SMD:R_0805_2012Metric | R11 |
| 1 | Battery | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Horizontal | BT1 |
| 1 | Conn_01x05 | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Horizontal | J2 |
| 1 | LED | LED_SMD:LED_0805_2012Metric | D5 |
| 1 | MCM93_MOD | mcm-imx93_footprint:LGA-140-080-30x30-iMX93 | MCM93_MOD1 |
| 1 | Micro_SD_Card_Det1 | Connector_Card:microSD_HC_Hirose_DM3AT-SF-PEJM5 | J7 |
| 1 | PCM5102APWR | PCM5102-DAC:SOP65P640X120-20N | U2 |
| 1 | SW_Push | Button_Switch_SMD:SW_Push_1P1T-SH_NO_CK_KMR2xxG | RESET1 |
| 1 | SW_Push | SSSS810701:SSSS810701 | ON/OFF1 |
| 1 | TP4056-42-ESOP8 | Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm_ThermalVias | U5 |
| 1 | TPS63020DSJR/3.7V Reg | TPS63020:IC_TPS63020DSJR | U4 |
| 1 | USB_C_Receptacle_USB2.0_14P | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
| 1 | XL1509-3.3 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | ~ | MIC2877-5.0YFT-TR:VREG_MIC2877-AYFT-TR | U3 |
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Questions
How big is the Pulsephone main board PCB?
It measures 70.5 × 128.5 mm and has 4 copper layers, 1.58 mm thick.
What parts does the Pulsephone main board use?
94 parts, built around the XL1509-3.3 and TP4056-42-ESOP8. 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 Pulsephone main board KiCad files?
From the pulseopen/PulsePhone repository on GitHub, at the commit this page was made from: the board is main_board/pulsephone_main_board.kicad_pcb and its schematic audio/audio.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Pulsephone main board design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).