# Handheld Lymphatic Pressure Device ## Description Dispositivo de Masaje Linfático ## Project Details - **Owner:** lauragutierrez - **Created:** 4/16/2026 - **Last Updated:** 4/20/2026 - **Visibility:** Public ## Key Components ### BZ1 — [CPT-9019S-SMT-TR](https://www.flux.ai/jecstronic/cpt-9019s-smt-tr~c1x.md) - Role: Alarm Buzzer - Package: SMD Buzzer - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: CPT-9019S-SMT-TR - Role Details: Externally driven piezo buzzer for fault/alarm indication under MCU control - Manufacturer Name: CUI Devices - Part Type: Buzzer - Datasheet URL: https://www.cuidevices.com/product/resource/cpt-9019s-smt-tr.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] ### D1 — [SP0504BAHT](https://www.flux.ai/kicad-part-library/sp0504baht~aw7.md) - Package: SOT-23-5 - Package or Case Code: SOT-23-5 - Role Details: Protect USB-C VBUS and CC lines against ESD/transients - Manufacturer Part Number: SP0504BAHT - Role: ESD Protection - Datasheet URL: http://www.littelfuse.com//media/files/littelfuse/technical%20resources/documents/data%20sheets/sp05xxba.pdf - Manufacturer Name: Texas Instruments Inc. **Pins:** - A [pin 2] - K [pin 1] - K [pin 4] - K [pin 3] - K [pin 5] ### D2 — [NRVB130T1G](https://www.flux.ai/lcsc/nrvb130t1g~q43l.md) - Product Info Url: https://lcsc.com/product-detail/Schottky-Barrier-Diodes-SBD_ON-Semicon_NRVB130T1G_ON-Semicon-ON-NRVB130T1G_C223580.html - Manufacturer Part Number: NRVB130T1G - Role Details: Clamps voltage transients from ERM motor switching - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2410010333_onsemi-NRVB130T1G_C223580.pdf - Reverse Voltage: 30V - Role: Flyback Protection - Manufacturer Name: onsemi(安森美) - Package or Case Code: SOD-123_L2.7-W1.6-LS3.7-RD-1 - LCSC Part Number: C223580 - JLCPCB Part Class: Extended Part - Part Type: Schottky Barrier Diodes (SBD) - Package: SOD-123 - Forward Voltage: 0.45V - Diode Type: Schottky Diode **Pins:** - 1 [pin 1] - 2 [pin 2] ### IC1 — [MCP73833T-AMI/MF](https://www.flux.ai/jecstronic/mcp73833t-amimf~x9.md) - Package: DFN-10-EP - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Microchip Technology - Part Type: Integrated Circuit - Manufacturer Part Number: MCP73833T-AMI/MF - Datasheet URL: https://ww1.microchip.com/downloads/en/DeviceDoc/22005b.pdf - Role Details: USB-C powered single-cell Li-ion charger with status outputs and THERM input - Role: Battery Charger **Pins:** - ~PG(~TE) [pin 7] - EP [pin 11] - PROG [pin 6] - STAT1 [pin 3] - STAT2 [pin 4] - THERM [pin 8] - VBAT_1 [pin 9] - VBAT_2 [pin 10] - VDD_1 [pin 1] - VDD_2 [pin 2] - VSS [pin 5] ### J1 — [USB4235-03-C](https://www.flux.ai/cherepanyadima/usb4235-03-c~sn.md) - Manufacturer Part Number: USB4235-03-C_REVA - Role Details: USB-C 5V sink-only connector with CC pins for charging input - Datasheet URL: https://gct.co/files/specs/usb4235-spec.pdf - Manufacturer Name: GST - Part Type: Connectors - Role: Power Input Connector - Package: USB-C SMT **Pins:** - CC1 [pin A5] - CC2 [pin B5] - DN1 [pin A7] - DN2 [pin B7] - DP1 [pin A6] - DP2 [pin B6] - GND_A [pin A1] - GND_A__1 [pin A12] - GND_B [pin B1] - GND_B__1 [pin B12] - SBU1 [pin A8] - SBU2 [pin B8] - SHIELD [pin SH1] - SHIELD__1 [pin SH2] - VBUS_A [pin A4] - VBUS_A__1 [pin A9] - VBUS_B [pin B4] - VBUS_B__1 [pin B9] ### LED1 — [0603GBD0790S01](https://www.flux.ai/adrian95/0603gbd0790s01~iak.md) - Part Type: LED - Role Details: Green LED for normal or in-range status indication - Manufacturer Part Number: 0603GBD0790S01 - Manufacturer Name: ORIENTAL TECHNOLOGY - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/4336/0603GBD0790S01.pdf - Role: Status LED - Package: 0603 - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - A [pin 2] - K [pin 1] ### LED2 — [KT-0603R](https://www.flux.ai/adrian95/kt-0603r~7c.md) - Role Details: Red LED for charging fault, overpressure, or protection status indication - Package: 0603 - Datasheet URL: https://www.lcsc.com/datasheet/lcsc_datasheet_1810231112_Hubei-KENTO-Elec-KT-0603R_C2286.pdf - Part Type: LED - Manufacturer Part Number: KT-0603R - Role: Fault LED - Manufacturer Name: Hubei KENTO Elec - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - A [pin 2] - K [pin 1] ### MOT1 — [LCM1027A2445F](https://www.flux.ai/lcsc/lcm1027a2445f~bqgp.md) - Package: SMD Motor - Role: Haptic Motor - Manufacturer Name: LEADER(立得) - Package or Case Code: VIBRATING-MOTOR-SMD_WELDING - JLCPCB Part Class: Extended Part - Role Details: 2-wire ERM vibration motor used as implementation placeholder for selected C1234BE03L27-3.7V - LCSC Part Number: C2759984 - Part Type: Micro Motor & Motor - Manufacturer Part Number: LCM1027A2445F **Pins:** - - [pin 1] - + [pin 2] ### Q1 — [2N7002K](https://www.flux.ai/jecstronic/2n7002k~8y.md) - Role: Motor Switch - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Transistor - Role Details: Logic-driven low-side NMOS for ERM haptic motor switching - Package: SOT-23 - Manufacturer Part Number: 2N7002K - Datasheet URL: https://www.infineon.com/dgdl/Infineon-2N7002-DS-v02_04-en.pdf - Manufacturer Name: MDD **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### Q2 — [2N7002K](https://www.flux.ai/jecstronic/2n7002k~8y.md) - Role Details: Logic-driven low-side NMOS for piezo buzzer actuation - Manufacturer Name: MDD - Datasheet URL: https://www.infineon.com/dgdl/Infineon-2N7002-DS-v02_04-en.pdf - Role: Buzzer Switch - Manufacturer Part Number: 2N7002K - Package: SOT-23 - Part Type: Transistor - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### RT1 — [NTCS0805E3103FMT](https://www.flux.ai/adrian95/ntcs0805e3103fmt~zas.md) - Manufacturer Name: Vishay Beyschlag/Draloric/BC Components - Datasheet URL: https://www.vishay.com/docs/29044/ntcs0805e3t.pdf - Role: Thermal Sensor - License: https://creativecommons.org/licenses/by/4.0/ - Package: 0805 - Role Details: 10k NTC used for thermal interlock and charger THERM monitoring - Manufacturer Part Number: NTCS0805E3103FMT - Part Type: Thermistor **Pins:** - 1 [pin 1] - 2 [pin 2] ### U1 — [ABX00083](https://www.flux.ai/adrian95/abx00083~mdb.md) - Role Details: ESP32 Nano S3 main controller with ADC input, PWM outputs, USB, and wireless connectivity - Datasheet URL: https://docs.arduino.cc/resources/datasheets/ABX00083-datasheet.pdf - Manufacturer Part Number: ABX00083 - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Arduino - Package: Module - Role: MCU - Part Type: Development Board **Pins:** - +3V3_ [pin 2] - A0 [pin 4] - A1 [pin 5] - A2 [pin 6] - A3 [pin 7] - A4 [pin 8] - A5 [pin 9] - A6 [pin 10] - A7 [pin 11] - BOOT0 [pin 3] - BOOT1 [pin 13] - D0/TX [pin 16] - D1/RX [pin 17] - D10_/_CS [pin 28] - D11_/_COPI [pin 29] - D12_/_CIPO [pin 30] - D13_/_SCK_ [pin 1] - D2 [pin 20] - D3 [pin 21] - D4 [pin 22] - D5 [pin 23] - D6 [pin 24] - D7 [pin 25] - D8 [pin 26] - D9 [pin 27] - GND_1 [pin 14] - GND_2 [pin 19] - RST [pin 18] - VBUS [pin 12] - VIN [pin 15] ### U2 — [MAX40200AUK+T](https://www.flux.ai/jecstronic/max40200aukplust~uqg.md) - License: https://creativecommons.org/licenses/by/4.0/ - Role: Power Path - Manufacturer Name: Analog Devices Inc./Maxim Integrated - Manufacturer Part Number: MAX40200AUK+T - Role Details: Ideal diode for battery-to-system low-loss power path isolation - Package: SOT-23-5 - Datasheet URL: https://datasheets.maximintegrated.com/en/ds/MAX40200.pdf - Part Type: Integrated Circuit **Pins:** - EN [pin 3] - GND [pin 2] - NC [pin 4] - OUT [pin 5] - VDD [pin 1] ### U3 — [MIC5504-3.3YM5](https://www.flux.ai/kicad-part-library/mic5504-3p3ym5~ud0.md) - Datasheet URL: http://ww1.microchip.com/downloads/en/DeviceDoc/MIC550X.pdf - Role: Voltage Regulator - Package: SOT-23-5 - Role Details: 3.3V LDO creating quiet rail for MCU, sensor divider, buzzer control, and indicators - Manufacturer Name: Microchip Technology Inc. - Manufacturer Part Number: MIC5504-3.3YM5 - Package or Case Code: SOT-23-5 **Pins:** - EN [pin 3] - GND [pin 2] - NC [pin 4] - VIN [pin 1] - VOUT [pin 5] ### U4 — [S2B-PH-K-S(LF)(SN)](https://www.flux.ai/lcsc/s2b-ph-k-slfsn~vk6f.md) - Package or Case Code: CONN-TH_S2B-PH-K-S-LF-SN - Manufacturer Name: JST - Product Info Url: https://lcsc.com/product-detail/PH-Connectors_JST-Sales-America_S2B-PH-K-S-LF-SN_JST-Sales-America-S2B-PH-K-S-LF-SN_C173752.html - LCSC Part Number: C173752 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_JST-S2B-PH-K-S-LF-SN_C173752.pdf - Role: Battery Connector - JLCPCB Part Class: Extended Part - Part Type: Wire To Board / Wire To Wire Connector - Role Details: Connector for single-cell Li-ion battery pack - Package: JST-PH-2 - Manufacturer Part Number: S2B-PH-K-S(LF)(SN) **Pins:** - 1 [pin 1] - 2 [pin 2] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/lauragutierrez/handheld-lymphatic-pressure-device~gc](https://www.flux.ai/lauragutierrez/handheld-lymphatic-pressure-device~gc).* --- *Generated from [https://www.flux.ai/lauragutierrez/handheld-lymphatic-pressure-device~gc](https://www.flux.ai/lauragutierrez/handheld-lymphatic-pressure-device~gc)*