4 layers21 × 19 mm
4 layers91 × 22 mm
LC PAMV4b
WMXZ-EU/LC-MARE8low-cost marine acoustic recorder
- Size
- 91 × 22 mm
- Copper layers
- 4
- Thickness
- 1.59 mm
- Parts
- 74
- Nets
- 66
- Pads
- 250
- Tracks, vias
- 473, 31
- Pours
- 12
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 26 Jul 2024
- Updated
- 7 Nov 2026
Overview
LC PAMV4b is an open-source printed circuit board by WMXZ-EU, from the WMXZ-EU/LC-MARE repository on GitHub, published under the MIT licence. It is a 4-layer board of 91 × 22 mm with 74 parts on 66 nets, routed with 473 tracks and 31 vias.
It is built around the AD8656AR, DS3232MZ+ and MIC5219-3.3YM5. Its parts include 31 capacitors, 22 resistors, 15 connectors and 6 ICs.
Main components
3
AD8656AR
SOIC8Low Noise, Precision CMOS AmplifierAnalog DevicesUncategorisedDS3232MZ+
SO-8-40℃~+85℃ 100nA 125uA 2.3V~4.5V Built-in I2C Temperature compensation、Backup power management and battery charging、InsideSRAM/NVRAM、Alarm function、Periodic interrupt output Yes SO-8 Real Time Clocks ROHSMaxim Integrated (Analog Devices)Real Time Clocks
MIC5219-3.3YM5
SOT23-53.3V 500mA Peak Output Low Drop-Out (LDO) RegulatorMicrochip TechnologyUncategorised
README
README.mdLC-MARE
Low-Cost Marine Acoustic REcorder. See detailed info in different folders
Actual preferred firmware verson is adalogger_V3
Content
3D-models
contains some stl files for 3D printing
adalogger_V2
first LC-Mare firmware uses only adalogger RP2040. Suitable for single hydrophone and sampling frequency up to 96 kHz
adalogger_V3
improved LC-Mare firmware
- for adalogger RP2040 (single hydrophone up to 96 kHz sampling frequency)
- for rp2350 based adafruit feather (stereo and up to 384 kHz sampling frequency)
microPAM_V3
improved version of adalogger_V3 for three MCU types (RP2040, RP2350, Teensy4.1) all for sampling frequency up to 384 kHz
microPAM_V4
development version for three MCU types (RP2040, RP2350, Teensy4.1) Work in Progress
Documents
different files describing project and hardware construction
KICAD
hardware desigh files for
- ADC (ADC_V2)
- preamp (PreampV5-mare)
- Base board (LC_PAMV4b)
- Libraries (for KICAD)
Python
contains python based setup and analysis scripts
Of importance is a GUI (LC_Mare.py) that provides access to basic operations, like inspecting LC_mare file parameters, visualizing time series and spectra, to configure the firmware, to convert compressed to wav files, and to upload latest firmware
An compiled version (.exe) with supporting libraries may be found in
https://github.com/WMXZ-EU/LC-MARE/releases/download/LC_Mare_v1.0.0/LC_Mare.zip
Parts
74| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 1u | Capacitor_SMD:C_0603_1608Metric | C1, C2, C7, C8, C11, C12, C18, C19, C24, C28 |
| 9 | 0.1u | Capacitor_SMD:C_0603_1608Metric | C5, C6, C15, C16, C20, C23, C27, C29, C101 |
| 5 | 10k | Resistor_SMD:R_0603_1608Metric | R1, R7, R8, R14, R16 |
| 5 | 4.7k | Resistor_SMD:R_0603_1608Metric | R15, R18, R101, R102, R103 |
| 4 | 15p | Capacitor_SMD:C_0603_1608Metric | C3, C4, C9, C10 |
| 4 | 2M | Resistor_SMD:R_0603_1608Metric | R2, R3, R9, R10 |
| 4 | 49R | Resistor_SMD:R_0603_1608Metric | R5, R6, R12, R13 |
| 4 | Conn_01x01_Pin | Connector_PinHeader_1.27mm:PinHeader_1x01_P1.27mm_Vertical | J3, J4, J5, J11 |
| 3 | 10u | Capacitor_SMD:C_0805_2012Metric | C13, C14, C30 |
| 2 | 100k | Resistor_SMD:R_0603_1608Metric | R17, R19 |
| 2 | 1k | Resistor_SMD:R_0603_1608Metric | R4, R11 |
| 2 | 2700p | Capacitor_SMD:C_0603_1608Metric | C17, C22 |
| 2 | 47u | Capacitor_SMD:C_1206_3216Metric | C25, C26 |
| 2 | AD8656 | Package_SO:MSOP-8_3x3mm_P0.65mm | U1, U2 |
| 2 | Conn_01x02_Male | Connector_Molex:Molex_PicoBlade_53048-0210_1x02_P1.25mm_Horizontal | J1, J2 |
| 2 | Conn_01x02_Pin | Connector_PinHeader_1.27mm:PinHeader_1x02_P1.27mm_Vertical | J9, J10 |
| 2 | Conn_01x04 | Connector_PinHeader_1.27mm:PinHeader_1x04_P1.27mm_Vertical | J6, J7 |
| 2 | Conn_01x06_Pin | Connector_PinHeader_1.27mm:PinHeader_1x06_P1.27mm_Vertical | J14, J18 |
| 1 | 1u | Capacitor_SMD:C_0805_2012Metric | C21 |
| 1 | Conn_01x02 | Connector_PinHeader_1.27mm:PinHeader_1x02_P1.27mm_Vertical | J8 |
| 1 | Conn_01x02_Pin | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J15 |
| 1 | DS3232M | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U102 |
| 1 | MIC5219-3.3YM5 | Package_TO_SOT_SMD:SOT-23-5 | U4 |
| 1 | Micro_SD_Card_Det_Hirose_DM3AT | myLibrary:microSD_HC_Hirose_DM3AT-SF-PEJM5 | J16 |
| 1 | TLV320ADC6140 | Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm_ThermalVias | U3 |
| 1 | kb2040 | kb2040:kb2040 | U51 |
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Questions
How big is the LC PAMV4b PCB?
It measures 91 × 22 mm and has 4 copper layers, 1.59 mm thick.
What parts does the LC PAMV4b use?
74 parts, built around the AD8656AR, DS3232MZ+ and MIC5219-3.3YM5. 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 LC PAMV4b KiCad files?
From the WMXZ-EU/LC-MARE repository on GitHub, at the commit this page was made from: the board is KICAD/LC_PAMV4b/microPAM-mare-2024-01-18_134022/LC_PAMV4b.kicad_pcb and its schematic KICAD/ADC_V2/ADC_V2.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the LC PAMV4b design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).