2 layers
LED ring
ChangliangGuo2/COMET
This repository includes files for COMET (Cortex-wide Observational Miniature Epifluorescence Technique)
13 parts1
4 layers34.9 × 13.2 mm
CM2 MesoScope
ChangliangGuo2/COMET1This repository includes files for COMET (Cortex-wide Observational Miniature Epifluorescence Technique)
- Size
- 34.9 × 13.2 mm
- Copper layers
- 4
- Thickness
- 0.79 mm
- Parts
- 97
- Nets
- 76
- Pads
- 368
- Tracks, vias
- 600, 136
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 5 Aug 2025
- Updated
- 11 Aug 2025
Overview
CM2 MesoScope is an open-source printed circuit board by ChangliangGuo2, from the ChangliangGuo2/COMET repository on GitHub. It is a 4-layer board of 34.9 × 13.2 mm with 97 parts on 76 nets, routed with 600 tracks and 136 vias.
It is built around the MAX14574EWL+, MT9P031I12STM-DP and SC189ZULTRT, with the BNO055, DS90UB913ATRTVTQ1 and TPL0102-100RUCR among its other parts. Its parts include 52 capacitors, 18 resistors, 9 ICs, 6 inductors and 4 connectors.
Main components
12
MAX14574EWL+
-- LED Drivers ROHSMaxim Integrated (Analog Devices)LED Drivers
MT9P031I12STM-DP
LCC-48(10x10)Global shutter、Regional image control LCC-48(10x10) Image Sensors ROHSonsemiImage Sensors
SC189ZULTRT
MLPD-6-UT(2x2)-40℃~+125℃@(TJ) 1 1.5A 2.5MHz 2.9V~5.5V 3.3V Buck Buck Built-in Fixed Yes MLPD-6-UT(2x2) DC-DC Converters ROHSSEMTECHDC-DC Converters
BNO055
LGA-28(3.8x5.2)-40℃~+85℃ 2.4V~3.6V 40uA I2C、UART IMU X,Y,Z X,Y,Z ±16g ±2000dps LGA-28(3.8x5.2) Accelerometers ROHSBosch SensortecAccelerometers
DS90UB913ATRTVTQ1
WQFN-32-EP(5x5)-40℃~+105℃ 1.8V 100MHz Serializer WQFN-32-EP(5x5) Serializers, Deserializers ROHSTexas InstrumentsSerializers, Deserializers
TPL0102-100RUCR
QFN-14(2x2)-40℃~+85℃ 0.5LSB 100kΩ 1uA 2 2.7V~5.5V 229kHz 256 25Ω、100Ω 92ppm/℃ EEPROM I2C Linear Non-volatile storage ±20% QFN-14(2x2) Digital Potentiometers ROHSTexas InstrumentsDigital Potentiometers
GRM033R61A104ME15D
0201100nF 10V X5R ±20% 0201 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSMurataMultilayer Ceramic Capacitors MLCC - SMD/SMTERJ-1GNF1022C
0201-55℃~+125℃ 10.2kΩ 50mW Thick Film Resistor ±1% ±200ppm/℃ 0201 Chip Resistor - Surface Mount ROHSPanasonicChip Resistor - Surface MountGRM033R61A225ME47D
020110V 2.2uF X5R ±20% 0201 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSMurataMultilayer Ceramic Capacitors MLCC - SMD/SMTERJ-1GNF3321C
0201-55℃~+125℃ 3.32kΩ 50mW Thick Film Resistor ±1% ±200ppm/℃ 0201 Chip Resistor - Surface Mount ROHSPanasonicChip Resistor - Surface MountERJ-1GNF3741C
0201-55℃~+125℃ 3.74kΩ 50mW Thick Film Resistor ±1% ±200ppm/℃ 0201 Chip Resistor - Surface Mount ROHSPanasonicChip Resistor - Surface MountERJ-1GNJ622C
0201-55℃~+125℃ 50mW 6.2kΩ Thick Film Resistor ±200ppm/℃ ±5% 0201 Chip Resistor - Surface Mount ROHSPanasonicChip Resistor - Surface Mount
README
README.mdCOMET
This repository includes files for COMET (Cortex-wide Observational Miniature Epifluorescence Technique) [COMET Wiki] [Miniscope DAQ Software Wiki] [Miniscope DAQ Firmware Wiki]
Overview of COMET
Components
Specfications
- Field of View: up to 10-mm in diameter
- Resolution: single cell_ resolution
- Working Distance: ~5mm working distance
- Illumination: Optimized led ring excitation for even illuminiation across the field of view
- Optics: customized optical system for miniature abberations across the field of view
- Photo-Bleaching: Low photo-bleaching even after two hours of continuous imaging
- Weight: 3.75 grams
- Impact on Subjects: Combined with intergrated active commutator(Torque-free),essentially there is no impact on the free behavior of mice even during two hours of continuous imaging
- Orientation Sensor: Absolute head orientation sensor
- Focal Adjustment: electronic focal adjustment(optional)
- Imaging Performance: stable imaging performance even in the electroshock paradigm and two hours of continuous imaging paradigm
All information, guides, and tutorials can be found on the COMET Wiki Page.
Parts
97| Qty | Value | Footprint | References |
|---|---|---|---|
| 21 | GRM033R61A104ME15D | .Capacitor:C_0201_0603Metric_L | C3, C11, C15, C17, C22, C27, C29, C30, C31, C32, C33, C35, C36, C37, C39, C41 +5 |
| 7 | GRM033R61A105ME15D | .Capacitor:C_0201_0603Metric_L | C13, C24, C25, C26, C28, C38, C45 |
| 7 | GRM033R71A103KA01D | .Capacitor:C_0201_0603Metric_L | C9, C12, C16, C18, C23, C42, C44 |
| 6 | GRM155R60J106ME15D | .Capacitor:C_0402_1005Metric_L | C1, C2, C14, C20, C34, C40 |
| 4 | ERJ-1GNF1022C | .Resistor:R_0201_0603Metric_ERJ_L | R3, R7, R9, R10 |
| 4 | GRM033R61A225ME47D | .Capacitor:C_0201_0603Metric_L | C5, C6, C47, C48 |
| 4 | MountingHole | Connector:Conn_1x1_700_Circular_Pad_mountinghole | H3, H3, H3, H3 |
| 3 | BLM15HD102SN1D | Inductor_SMD:L_0402_1005Metric | L1, L4, L5 |
| 3 | GRM155R60J475ME87D | .Capacitor:C_0402_1005Metric_L | C7, C10, C46 |
| 2 | Conn_01x01 | .Connector:Conn_1x1_750x750_Pad | J5, J6 |
| 2 | ERJ-1GNF3321C | .Resistor:R_0201_0603Metric_ERJ_L | R14, R15 |
| 2 | ERJ-1GNF3741C | .Resistor:R_0201_0603Metric_ERJ_L | R20, R22 |
| 2 | ERJ-1GNJ622C | .Resistor:R_0201_0603Metric_ERJ_L | R19, R21 |
| 1 | 0402WGF1962TCE | .Resistor:R_0201_0603Metric_ERJ_L | R18 |
| 1 | 0402WGF6491TCE | .Resistor:R_0201_0603Metric_ERJ_L | R5 |
| 1 | 1k | .Resistor:R_0201_0603Metric_ERJ_L | R12 |
| 1 | 500 | .Resistor:R_0201_0603Metric_ERJ_L | R13 |
| 1 | ADL3225V-470MT-TL000 | .Inductor:L_1210_3225Metric_L | L2 |
| 1 | BAS316-TP | .Diode:SOD_323_250X125X110L30X32L | D18 |
| 1 | BNO055 | Package_LGA:LGA-28_5.2x3.8mm_P0.5mm | U5 |
| 1 | Conn_01x01 | .Connector:Conn_1x1_2500x2500_Pad | J_coax_gnd1 |
| 1 | Conn_01x05 | .FH19C-4S-0.5SH(10):FH19C-5S-0.5SH(10) | J1 |
| 1 | DNL | .Resistor:R_0201_0603Metric_ERJ_L | R11 |
| 1 | DS90UB913ATRTVTQ1 | .Package_QFN:QFN_33_P50_500X500X80L40X24T310L | U1 |
| 1 | ERJ-1GNF1003C | .Resistor:R_0201_0603Metric_ERJ_L | R4 |
| 1 | ERJ-1GNF1801C | .Resistor:R_0201_0603Metric_ERJ_L | R1 |
| 1 | ERJ-1GNF49R9C | .Resistor:R_0201_0603Metric_ERJ_L | R2 |
| 1 | FH19C-4S-0.5SH(10) | .FH19C-4S-0.5SH(10):FH19C-4S-0.5SH(10) | J4 |
| 1 | GRJ188R72A104KE11D | .Capacitor:C_0603_1608Metric_L | C50 |
| 1 | GRM033R61C473KE84D | .Capacitor:C_0201_0603Metric_L | C4 |
| 1 | GRM158C80G226ME01J | .Capacitor:C_0402_1005Metric_L | C21 |
| 1 | GRM21BR61A476ME15L | .Capacitor:C_0805_2012Metric_L | C19 |
| 1 | LED 0402 | LED_SMD:LED_0402_1005Metric | D19 |
| 1 | LQM18PN3R3MGHD | .Inductor:L_0603_1608Metric_L | L3 |
| 1 | LQM2HPN1R0MG0 | .Inductor:L_1008_2520Metric_L | L6 |
| 1 | LTC3217EUD_TRPBF | Package_DFN_QFN:HVQFN-16-1EP_3x3mm_P0.5mm_EP1.5x1.5mm | U2 |
| 1 | MAX14574EWL+ | .Package_BGA:BGA_15_NP50_3X5_155X255X69B31N | U7 |
| 1 | MT9P031I12STM-DP | .Package_LCC:iLCC48P70_1000X1000X135L80X40N | U8 |
| 1 | NCV8154MW180280TBG | .Package_QFN:DFN10_3x3_11P50_300X300X100L40X24T250X180N | U4 |
| 1 | SC189ZULTRT | .Package_SON:SON_7P50_200X200X57L35X24T170X80N | U3 |
| 1 | SG-210STF 66.6667ML3 | .Oscillator:OSC_CC250X200X80L70X75L | U6 |
| 1 | TPL0102-100RUCR | .Package_QFN:QFN_14_P40_200X200X40L40X20L | U9 |
| 1 | U.FL-R-SMT-1(10) | .Connector:Coax_Conn_U.FL | J_coax1 |
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Questions
How big is the CM2 MesoScope PCB?
It measures 34.9 × 13.2 mm and has 4 copper layers, 0.79 mm thick.
What parts does the CM2 MesoScope use?
97 parts, built around the MAX14574EWL+, MT9P031I12STM-DP, SC189ZULTRT and BNO055. 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 CM2 MesoScope KiCad files?
From the ChangliangGuo2/COMET repository on GitHub, at the commit this page was made from: the board is Kicad PCBs/COMET main/CM2_MesoScope.kicad_pcb and its schematic Kicad PCBs/COMET main/CM2_MesoScope.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the CM2 MesoScope design in my own project?
Its repository states no licence, so its author keeps all rights: ask ChangliangGuo2 before reusing the design.