2 layers38.5 × 32 mm
2 layers41.5 × 44 mm
Murmur
dazed-16/MurmurAn AI powered device that holds recording as your second brain.
- Size
- 41.5 × 44 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 20
- Nets
- 73
- Pads
- 205
- Tracks, vias
- 238, 34
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 1 Oct 2026
- Updated
- 5 Oct 2026
Overview
Murmur is an open-source printed circuit board by dazed-16, from the dazed-16/Murmur repository on GitHub. It is a 2-layer board of 41.5 × 44 mm with 20 parts on 73 nets, routed with 238 tracks and 34 vias.
It is built around the ESP32-S3-MINI-1-N8, BQ24074RGTR and MAX17048G+T10, with the TPS63031DSK, USBLC6-2SC6 and USB4105-GF-A among its other parts. Its parts include 6 ICs, 5 resistors, 4 connectors, 2 capacitors and 2 inductors. It belongs with the ESP32 boards of this library.
Main components
6
ESP32-S3-MINI-1-N8
SMD-104.5dBm -40℃~+85℃ 2.4GHz 20.5dBm 330mA 3V~3.6V 97mA Bluetooth5.0 ESP32-S3FN8 Chip On-board PCB Antenna UART、SPI、I2C、I2S、USB SMD WiFi Modules ROHSEspressif SystemsWiFi Modules
BQ24074RGTR
QFN-16-EP(3x3)-40℃~+125℃ 1 1.5A 4.2V 4.35V~10.2V 6.5uA Charging IC Lithium Battery Not supported Support QFN-16-EP(3x3) Battery Management ROHSTexas InstrumentsBattery Management
MAX17048G+T10
DFN-8-EP(2x2)-40℃~+85℃ 1 2.5V~4.5V 3uA I2C Lithium Battery Not supported Not supported DFN-8-EP(2x2) Battery Management ROHSMaxim Integrated (Analog Devices)Battery Management
TPS63031DSK
UncategorisedTexas Instruments
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)
USB4105-GF-A
SMD-40℃~+85℃ 1 12P 48V 5A Black Female Surface Mount, Right Angle Type-C USB 2.0 SMD USB Connectors ROHSGlobal Connector Technology (GCT)USB Connectors
README
PCB/Mic/README.mdMurmur
An AI powered device that holds recording as your second brain.
Parts
20| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 22nf | Capacitor_SMD:C_0603_1608Metric | C1, C2 |
| 1 | 1.5kOhm | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | 1.5nh | Inductor_SMD:L_0603_1608Metric | L1 |
| 1 | 1.78kOhm | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 100kOhm | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | 1nh | Inductor_SMD:L_0603_1608Metric | L2 |
| 1 | 5.1kOhm | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 732kOhm | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | BQ24074RGT | Package_DFN_QFN:VQFN-16-1EP_3x3mm_P0.5mm_EP1.6x1.6mm | U6 |
| 1 | Conn_01x04_Pin | Connector:Tag-Connect_TC2030-IDC-FP_2x03_P1.27mm_Vertical | J3 |
| 1 | ESP32-S3-MINI-1 | RF_Module:ESP32-S2-MINI-1 | U1 |
| 1 | I2C OLED | Connector_PinHeader_1.00mm:PinHeader_1x04_P1.00mm_Vertical | J4 |
| 1 | MAX17048G+T10 | MAX17048G-T10:21-0168E_T822-3_MXM | U2 |
| 1 | Molex 104031-0811 | Connector_Card:microSD_HC_Molex_104031-0811 | J1 |
| 1 | SW_Push | Button_Switch_SMD:SW_Push_1P1T_NO_E-Switch_TL3301NxxxxxG | SW1 |
| 1 | TPS61023DRLR | TPS61023DRLR:DRL0006A | U3 |
| 1 | TPS63031DSK | Package_SON:WSON-10-1EP_2.5x2.5mm_P0.5mm_EP1.2x2mm | U4 |
| 1 | USB4105-GF-A | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J2 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U5 |
Questions
How big is the Murmur PCB?
It measures 41.5 × 44 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Murmur use?
20 parts, built around the ESP32-S3-MINI-1-N8, BQ24074RGTR, MAX17048G+T10 and TPS63031DSK. 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 Murmur KiCad files?
From the dazed-16/Murmur repository on GitHub, at the commit this page was made from: the board is PCB/Charger.dock/Murmur.kicad_pcb and its schematic Murmur.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Murmur design in my own project?
Its repository states no licence, so its author keeps all rights: ask dazed-16 before reusing the design.
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