2 layers41.5 × 44 mm
2 layers38.5 × 32 mm
Murmur
dazed-16/MurmurAn AI powered device that holds recording as your second brain.
- Size
- 38.5 × 32 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 31
- Nets
- 67
- Pads
- 218
- Tracks, vias
- 0, 0
- Routed
- Not yet
- 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 38.5 × 32 mm with 31 parts on 67 nets.
It is built around the ESP32-S3-MINI-1-N8, BQ25120AYFPR and MAX17048G+T10, with the CSD16301Q2 and SPH0645LM4H-B among its other parts. Its parts include 11 resistors, 7 capacitors, 5 ICs, 2 transistors and 2 switches. It belongs with the ESP32 boards of this library.
Main components
5
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
BQ25120AYFPR
DSBGA-25-40℃~+125℃ 1 300mA 4.2V 5.5V 700nA Charging IC I2C Support DSBGA-25 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
CSD16301Q2
WSON-6(2x2)-55℃~+150℃ 1 N-channel 1.55V 15W 17pF 2.8nC@4.5V 20A 215pF 25V 340pF 34mΩ@3V N-Channel WSON-6(2x2) MOSFETs ROHSTexas InstrumentsMOSFETs
SPH0645LM4H-B
SMDSMD Sourcing Parts ROHSKnowlesMEMS Microphones
README
PCB/Mic/README.mdMurmur
An AI powered device that holds recording as your second brain.
Parts
31| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 100kOhm | Resistor_SMD:R_0603_1608Metric | R7, R12 |
| 2 | 1nf | Capacitor_SMD:C_0603_1608Metric | C5, C7 |
| 2 | 4.7 kOhm | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | 5.1 mOhm | Resistor_SMD:R_0603_1608Metric | R9, R11 |
| 2 | CSD16301Q2 | Package_SON:Texas_DQK | Q1, Q2 |
| 1 | 10 nf | Capacitor_SMD:C_0603_1608Metric | C4 |
| 1 | 100nf | Capacitor_SMD:C_0603_1608Metric | C6 |
| 1 | 10kOhm | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 10nf | Capacitor_SMD:C_0603_1608Metric | C3 |
| 1 | 1kOhm | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | 2.2 kOhm | Resistor_SMD:R_0603_1608Metric | R8 |
| 1 | 2.2 nH | Inductor_SMD:L_0402_1005Metric | L1 |
| 1 | 2kOhm | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | 330 Ohm | Resistor_SMD:R_0603_1608Metric | R10 |
| 1 | 4.7 nf | Capacitor_SMD:C_0603_1608Metric | C2 |
| 1 | BQ25120AYFPR | BQ25120AYFPR:YFP0025BABD_TEX | U2 |
| 1 | BQ29700DSET | BQ29700DSET:DSE0006A | U3 |
| 1 | C | Capacitor_SMD:C_0603_1608Metric | C1 |
| 1 | Conn_01x02_Socket | Connector:Tag-Connect_TC2030-IDC-FP_2x03_P1.27mm_Vertical | J1 |
| 1 | ESP32-S3-MINI-1 | RF_Module:ESP32-S2-MINI-1 | U1 |
| 1 | LED | Package_SON:Texas_DQK | D1 |
| 1 | MAX17048G+T10 | MAX17048G-T10:21-0168E_T822-3_MXM | U4 |
| 1 | SPH0645LM4H | Sensor_Audio:Knowles_SPH0645LM4H-6_3.5x2.65mm | MK1 |
| 1 | SW_DPDT_x2 | Button_Switch_THT:SW_PUSH_1P1T_6x3.5mm_H5.0_APEM_MJTP1250 | SW1 |
| 1 | SW_MEC_5G | Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK | SW2 |
| 1 | TPS7A20xxxDQN | Package_SON:Texas_X2SON-4_1x1mm_P0.65mm | U5 |
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Questions
How big is the Murmur PCB?
It measures 38.5 × 32 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Murmur use?
31 parts, built around the ESP32-S3-MINI-1-N8, BQ25120AYFPR, MAX17048G+T10 and CSD16301Q2. 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/Mic/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.