2 layers114.3 × 106.7 mm
STM32F303-RIR4
RobertPHeller/STM32F303-RIR4
STM32F303 Nucleo Baseboard for Aztrax RIR4 shield
47 partsBSD-2-Clause
4 layers77 × 83 mm
GeoMCU
NohPei/GeoMCU2Integrated Geophone Boards with programmable gain and an onboard MCU. Can be used over WiFi or wired with an external ADC.
- Size
- 77 × 83 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 80
- Nets
- 47
- Pads
- 200
- Tracks, vias
- 483, 261
- Pours
- 26
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 2 Jun 2021
- Updated
- 2 Nov 2026
Overview
GeoMCU is an open-source printed circuit board by NohPei, from the NohPei/GeoMCU repository on GitHub, published under the CERN-OHL-P-2.0 licence. It is a 4-layer board of 77 × 83 mm with 80 parts on 47 nets, routed with 483 tracks and 261 vias.
It is built around the ESP-12S, AP1509-50SG and LMV324, with the MCP3201-CI/P, MCP41010-E/P and TLV1117-33DCY among its other parts. Its parts include 22 capacitors, 17 resistors, 7 ICs, 4 connectors and 2 switches. It belongs with the radio and wireless boards and the ESP8266 boards of this library.
Main components
7
ESP-12S
SMD,24x16mm-20℃~+85℃ -90dBm 16dBm 170mA 2.4GHz 3.3V 56mA 802.11b/g/n、TCP、IP ESP8266 Chip On-board PCB Antenna Over-the-air (OTA) update UART SMD,24x16mm WiFi Modules ROHSAi-ThinkerWiFi Modules
AP1509-50SG
SOP-8-40℃~+85℃ 1 150kHz 150uA 2A 4.5V~22V 5V Buck Buck Built-in Fixed No SOP-8 DC-DC Converters ROHSDiodes IncorporatedDC-DC Converters
LMV324
SOP-14-40℃~+85℃ 1MHz 2.8dB 250nA 3V~5.5V 4 400V/ms 40mA 40uV/√Hz@1kHz 430uA 5nA 7mV Built-in compensation、ESD protection SOP-14 Operational Amplifier ROHSIDCHIPOperational Amplifier
MCP3201-CI/P
PDIP-8-40℃~+85℃ 0.5LSB 1 100kHz 12 2.7V~5.5V 2LSB 500nA 800kHz、1.6MHz External External SAR SPI Yes PDIP-8 Analog to Digital Converters (ADC) ROHSMicrochip TechnologyAnalog To Digital Converters (ADC)MCP41010-E/P
PDIP-8-40℃~+125℃ 1 10kΩ 1LSB 1MHz 1uA 2.7V~5.5V 256 52Ω、73Ω 800ppm/℃ Linear SPI Soft reset、Power-on reset、Mute function ±20% PDIP-8 Digital Potentiometers ROHSMicrochip TechnologyDigital PotentiometersTLV1117-33DCY
UncategorisedTexas Instruments
SS32
SMA(DO-214AC)-55℃~+125℃ 20V 3A 500uA@20V 550mV@3A Independent SMA(DO-214AC) Schottky Diodes ROHSMDDSchottky Diodes
README
README.md
GeoMCU Board
Interface board for Structure-as-Sensor Geophones with embedded Microcontroller.
Firmware
- Firmware Files (buildable with PlatformIO) at NohPei/geoscope-sensor
Deployment
- Boards are designed to fit a Bud Industries PN-1323 enclosure for harsh environment deployments.
Specialty BOM Parts
- 1 ESP-12S Microcontroller Module
- 1 AP1509 (or equivalent) Switching Power Supply
- 1 TI INA333 input amp
- 1 MCP6001T-E/OT filtering op-amp
- 1 TI REF2033AIDCCT Voltage Reference
- 1 TLV1117 (or equivalent) Linear Regulator
- 1 AD5270BRMZ Digital POT for programmable gain
- 2 Molex SL-compatible 2-pin header connectors (1 for Geophone connection, 1 for power connection)
- Optional: 1 Vertical-Launch BNC connector for wired data collection
Copyright © 2024 The Regents of the University of Michigan, PEI Lab
Parts
80| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | 0.1u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C5, C9, C12, C13, C14, C18, C19, C20, C22, C23 |
| 6 | 10u | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C6, C7, C8, C10, C11, C17 |
| 6 | TP-Thru | TestPoint:TestPoint_Keystone_5000-5004_Miniature | TP1, TP2, TP3, TP6, TP7, TP8 |
| 4 | 0 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3, R14, R16, R17 |
| 4 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R8, R9, R10, R12 |
| 4 | 470 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R7, R11, R13, R15 |
| 4 | M3 | MountingHole:MountingHole_3.2mm_M3_ISO7380 | H1, H2, H3, H4 |
| 4 | TP-Flat | TestPoint:TestPoint_Pad_D1.0mm | TP4, TP5, TP9, TP10 |
| 3 | GND-TIE | GeoMCU:NetTie-2_SMD_Pad2.0mm | NT1, NT2, NT3 |
| 3 | Tooling | GeoMCU:ToolingHole_JLCPCB_1.152mm | H5, H6, H7 |
| 2 | 12k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R5 |
| 2 | 180u/35V | Capacitor_SMD:CP_Elec_8x6.9 | C3, C4 |
| 2 | BTN_SPST_NO | Button_Switch_SMD:SW_SPST_CK_RS282G05A3 | SW1, SW2 |
| 2 | Molex_SL_1x02_P2.54mm | Connector_Molex:Molex_SL_171971-0002_1x02_P2.54mm_Vertical | J1, J3 |
| 1 | 100k | Resistor_SMD:R_Array_Convex_4x0603 | RN1 |
| 1 | 10n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C16 |
| 1 | 33n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C15 |
| 1 | 36k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R6 |
| 1 | 36k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R4 |
| 1 | 3u/2A | Inductor_SMD:L_Taiyo-Yuden_NR-60xx_HandSoldering | L1 |
| 1 | 470u/35V | Capacitor_SMD:CP_Elec_10x12.6 | C2 |
| 1 | 5.1k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2 |
| 1 | 68u/2A | Inductor_SMD:L_12x12mm_H6mm | L2 |
| 1 | AP1509-5 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | BNC_Vertical | GeoMCU:BNC_Vertical | J4 |
| 1 | Conn_01x06_Pin | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J2 |
| 1 | ESP-12S | GeoMCU:ESP-12S | U7 |
| 1 | LMV324 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U4 |
| 1 | LOGO | GeoMCU:Polarity | G*** |
| 1 | MCP3201 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U6 |
| 1 | MCP41010 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U5 |
| 1 | REF3133 | Package_TO_SOT_SMD:SOT-23 | U3 |
| 1 | SS32 | GeoMCU:D_SMB_Handsoldering_Silk | D1 |
| 1 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_Pad1.0x1.5mm | JP2 |
| 1 | SolderJumper_2_Open_PWR | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP1 |
| 1 | TLV1117-33 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
The 79 most common of 80 parts.
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Questions
How big is the GeoMCU PCB?
It measures 77 × 83 mm and has 4 copper layers, 1.6 mm thick.
What parts does the GeoMCU use?
80 parts, built around the ESP-12S, AP1509-50SG, LMV324 and MCP3201-CI/P. 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 GeoMCU KiCad files?
From the NohPei/GeoMCU repository on GitHub, at the commit this page was made from: the board is GeoMCU.kicad_pcb and its schematic GeoMCU.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the GeoMCU design in my own project?
Its repository publishes it under the CERN-OHL-P-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).