# BarbellAI Clip V1 ## Description BarbellAI Clip V1 BLE IMU clip using Raytac MDBT50Q-1MV2 (nRF52840) MCU/radio with external 32.768 kHz LFXO, ICM-42688-P IMU, USB-C protected power entry, and 3.3 V AP2112K-class regulator rail. ## Project Details - **Owner:** mowens96531 - **Created:** 4/22/2026 - **Last Updated:** 5/3/2026 - **Visibility:** Public - **Copies:** 1 ## Key Components ### CL1 — [Generic Capacitor](https://www.flux.ai/jharwinbarrozo/generic-capacitor~1d.md) - Role Details: Initial LFXO load capacitor on XL1 for 32.768 kHz crystal; value to be tuned against stray capacitance if needed. - Capacitance: 12pF - Part Type: Non-Polarized Capacitor - Package: SMD_0402_1005Metric - Role: Crystal Load **Pins:** - P1 [pin 1] - P2 [pin 2] ### CL2 — [Generic Capacitor](https://www.flux.ai/jharwinbarrozo/generic-capacitor~1d.md) - Role Details: Initial LFXO load capacitor on XL2 for 32.768 kHz crystal; value to be tuned against stray capacitance if needed. - Capacitance: 12pF - Role: Crystal Load - Part Type: Non-Polarized Capacitor - Package: SMD_0402_1005Metric **Pins:** - P1 [pin 1] - P2 [pin 2] ### D_LED — [150080M153000](https://www.flux.ai/adrian95/150080m153000~ipz.md) - License: https://creativecommons.org/licenses/by/4.0/ - Implementation Details: Fallback library implementation. Intended production binding is locked to Inolux IN-S63ASURGB, LCSC C72037, per project requirement. - Role Details: RGB status LED, common-anode, placed as a tight cluster with its current-limit resistors - Manufacturer Part Number: 150080M153000 - Datasheet URL: https://www.we-online.com/components/products/datasheet/150080M153000.pdf - Manufacturer Name: Würth Elektronik - Role: Status Indicator - Part Type: LED **Pins:** - + [pin 4] - B [pin 3] - G [pin 2] - R [pin 1] ### D_POGO_TVS — [TPD1E10B06](https://www.flux.ai/corvus96/tpd1e10b06~4p.md) - Manufacturer Name: Texas Instruments - Datasheet URL: https://www.ti.com/lit/ds/symlink/tpd1e10b06.pdf?ts=1690493161581&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FTPD1E10B06%253Futm_source%253Dgoogle%2526utm_medium%253Dcpc%2526utm_campaign%253Dapp-null-null-GPN_EN-cpc-pf-google-wwe%2526utm_content%253DTPD1E10B06%2526ds_k%253DTPD1E10B06%2526DCM%253Dyes%2526gclid%253DCjwKCAjwq4imBhBQEiwA9Nx1Bsfn8ZKclLcMuED4bfyu6jK78uCuHzNdbMFQHGUeHLyEtuIUot6IuxoCYJIQAvD_BwE%2526gclsrc%253Daw.ds - Role: Input Protection - Role Details: TI TPD1E10B06 bidirectional TVS from POGO_RAW_5V to GND for pogo charging input ESD/transient protection. - Manufacturer Part Number: TPD1E10B06DPYR **Pins:** - 1 [pin 1] - 2 [pin 2] ### D_REV — [PMEG2005AEA,115](https://www.flux.ai/lcsc/pmeg2005aeac115~8pcf.md) - JLCPCB Part Class: Extended Part - Manufacturer Name: Nexperia - Package or Case Code: SOD-323_L1.7-W1.3-LS2.5-RD - Role: Reverse Protection - Part Type: Schottky Barrier Diodes (SBD) - Manufacturer Part Number: PMEG2005AEA,115 - LCSC Part Number: C179428 - Role Details: Nexperia PMEG2005AEA family Schottky reverse-protection diode; requested PMEG2005AEA-Q, closest exact library match PMEG2005AEA,115. Anode to POGO_FUSED_5V, cathode to POGO_5V. **Pins:** - A [pin 2] - K [pin 1] ### F_POGO — [0603L035YR](https://www.flux.ai/lcsc/0603l035yr~feg2.md) - Role: Overcurrent Protection - Package or Case Code: F0603 - Manufacturer Name: Littelfuse - Datasheet URL: https://lcsc.com/product-detail/Others_Littelfuse_0603L035YR_Littelfuse-0603L035YR_C207013.html - JLCPCB Part Class: Extended Part - Role Details: Littelfuse 0603L035YR resettable fuse from POGO_RAW_5V to POGO_FUSED_5V. - LCSC Part Number: C207013 - Manufacturer Part Number: 0603L035YR - Product Info Url: https://lcsc.com/product-detail/Others_Littelfuse_0603L035YR_Littelfuse-0603L035YR_C207013.html - Part Type: Resettable Fuses **Pins:** - 1 [pin 1] - 2 [pin 2] ### IC2 — [TLV75533PDBVR](https://www.flux.ai/adrian95/tlv75533pdbvr~jy8.md) - Role Details: 3.3V LDO regulator for BarbellAI Clip V1 MCU and IMU rail from protected 5V input; valid for MDBT50Q-1MV2 supply range 1.7V to 3.6V. - Package: SOT-23-5 - Part Type: Integrated Circuit - License: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Ftlv755p - Package or Case Code: SOT95P280X145-5N - Manufacturer Name: Texas Instruments - Role: Regulation - Manufacturer Part Number: TLV75533PDBVR - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Ftlv733p **Pins:** - BP [pin 4] - EN [pin 3] - GND [pin 2] - VIN [pin 1] - VOUT [pin 5] ### J_BAT — [532610271](https://www.flux.ai/lcsc/532610271~gscu.md) - Manufacturer Part Number: 532610271 - Part Type: Wire To Board / Wire To Wire Connector - Package or Case Code: CONN-SMD_532610271 - JLCPCB Part Class: Extended Part - Operating Temperature: -40~+105℃ - Connector Pitch: 1.25mm - Connector Positions: 2 - Current Rating: 1A - Role Details: PicoBlade 1.25 mm 2-circuit right-angle SMT LiPo attachment; pin 1 VBAT, pin 2 GND - Role: Battery connector - LCSC Part Number: C189700 - Manufacturer Name: MOLEX - Voltage Rating: 125V **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### J_POGO — [2336713-2](https://www.flux.ai/adrian95/2336713-2~ixo.md) - Package or Case Code: 23367132 - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: TE Connectivity - Connector Type: Pogo / spring contact charging input - Datasheet URL: https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=2336713&DocType=Customer+Drawing&DocLang=English - Manufacturer Part Number: 2336713-2 - Role: Magnetic Pogo Charging Input - Part Type: Connector - Connector Positions: 2 - Mount: PCB - Role Details: Two-terminal PCB spring/contact style connector used as external magnetic dock charging input; connect pin 1 to protected 5V input and pin 2 to ground. **Pins:** - 1 [pin 1] - 2 [pin 2] ### J_POGO_GND — [2336713-2](https://www.flux.ai/adrian95/2336713-2~ixo.md) - Mount: PCB - Part Type: Connector - Manufacturer Part Number: 2336713-2 - Connector Positions: 2 - Connector Type: Pogo / spring contact charging ground - Datasheet URL: https://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=2336713&DocType=Customer+Drawing&DocLang=English - Manufacturer Name: TE Connectivity - License: https://creativecommons.org/licenses/by/4.0/ - Role: Magnetic Pogo Charging Ground Contact - Package or Case Code: 23367132 - Role Details: Independent TE Connectivity 2336713-2 spring contact for magnetic charging dock ground; both terminals/pads are tied only to GND. **Pins:** - 1 [pin 1] - 2 [pin 2] ### J2 — [TC2030-IDC-NL](https://www.flux.ai/cherepanyadima/tc2030-idc-nl~kv.md) - Datasheet URL: https://www.tag-connect.com/wp-content/uploads/bsk-pdf-manager/TC2070-IDC-NL_Datasheet_12.pdf - Manufacturer Name: Tag-Connect LLC - Role Details: SWD debug/programming interface for nRF52840: SWDIO SWDCLK VDD GND RESET. - Part Type: Connector - Manufacturer Part Number: TC2030-IDC-NL - Role: Programming Header - Package: Tag-Connect TC2030-IDC-NL **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] ### Q_BV — [DMP2305UQ-7](https://www.flux.ai/lcsc/dmp2305uq-7~fedw.md) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2007271834_Diodes-Incorporated-DMP2305UQ-7_C674399.pdf - Package or Case Code: SOT-23-3_L2.9-W1.3-P1.90-LS2.4-BR - LCSC Part Number: C674399 - Manufacturer Name: DIODES(美台) - Role Details: High-side PMOS sleep-gate for battery measurement divider - Product Info Url: https://lcsc.com/product-detail/MOSFET_Diodes-Incorporated-DMP2305UQ-7_C674399.html - Role: Load Switch - JLCPCB Part Class: Extended Part - Part Type: MOSFETs - Manufacturer Part Number: DMP2305UQ-7 **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### U_CHG — [MCP73831T-2ACI/OT](https://www.flux.ai/acolborn/mcp73831t-2aciot~h8.md) - Datasheet URL: https://ww1.microchip.com/downloads/en/DeviceDoc/MCP73831-Family-Data-Sheet-DS20001984H.pdf - Part Type: Integrated Circuit - Manufacturer Name: Microchip - Manufacturer Part Number: MCP73831T-2ACI/OT - Role Details: Single-cell LiPo charge management from VPROT_5V to VBAT with status output CHG_STAT - Role: Battery Charger - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - PROG [pin 5] - STAT [pin 1] - VBAT [pin 3] - VIN [pin 4] - VSS [pin 2] ### U1 — MDBT50Q-1MV2 9wDd - Manufacturer Name: Raytac - Role Details: Main BLE MCU/radio for BarbellAI Clip V1 using Raytac MDBT50Q-1MV2 (nRF52840), integrated chip antenna, pre-certified module. Keep antenna no-ground keepout under antenna on all layers and place module at board edge. - Datasheet URL: https://www.raytac.com/download/index.php?index_id=43 - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Module - Role: Wireless MCU - Package: Raytac_MDBT50Q - Manufacturer Part Number: MDBT50Q-1MV2 **Pins:** - D- [pin 34] - D+ [pin 35] - DCCH [pin 31] - GND [pin 55] - GND [pin 33] - GND [pin 1] - GND [pin 2] - GND [pin 15] - P0.00/XL1 [pin 17] - P0.01/XL2 [pin 18] - P0.02/AIN0 [pin 11] - P0.03/AIN1 [pin 9] - P0.04/AIN2 [pin 20] - P0.05/AIN3 [pin 21] - P0.06 [pin 22] - P0.07/TRACECLK [pin 23] - P0.08 [pin 24] - P0.09/NFC1 [pin 52] - P0.10/NFC2 [pin 54] - P0.11/TRACEDATA2 [pin 27] - P0.12/TRACEDATA1 [pin 29] - P0.13 [pin 37] - P0.14 [pin 36] - P0.15 [pin 39] - P0.16 [pin 38] - P0.17 [pin 41] - P0.18/~RESET [pin 40] - P0.19 [pin 42] - P0.20 [pin 44] - P0.21 [pin 43] - P0.22 [pin 46] - P0.23 [pin 45] - P0.24 [pin 48] - P0.25 [pin 49] - P0.26 [pin 19] - P0.27 [pin 16] - P0.28/AIN4 [pin 13] - P0.29/AIN5 [pin 10] - P0.30/AIN6 [pin 14] - P0.31/AIN7 [pin 12] - P1.00/TRACEDATA0 [pin 47] - P1.01 [pin 61] - P1.02 [pin 50] - P1.03 [pin 60] - P1.04 [pin 56] - P1.05 [pin 59] - P1.06 [pin 57] - P1.07 [pin 58] - P1.08 [pin 25] - P1.09/TRACEDATA3 [pin 26] - P1.10 [pin 3] - P1.11 [pin 4] - P1.12 [pin 5] - P1.13 [pin 6] - P1.14 [pin 7] - P1.15 [pin 8] - SWDCLK [pin 53] - SWDIO [pin 51] - VBUS [pin 32] - VDD [pin 28] - VDDH [pin 30] ### U2 — [ICM-42688-P](https://www.flux.ai/lcsc/icm-42688-p~k6r7.md) - Manufacturer Part Number: ICM-42688-P - Package or Case Code: LGA-14_L3.0-W2.5-P0.50-TL - Implementation Details: Pins 2, 3, 10, and 11 marked NC per datasheet allowance; pin 7 tied to GND (required); pin 9 tied to GND because FSYNC/CLKIN are unused and INT2 must be disabled in firmware; SPI 4-wire mode to nRF52840 on non-NFC GPIOs; INT1 routed to non-NFC GPIO; place on rigid section near clamp centerline with axes aligned to barbell sleeve. - Manufacturer Name: TDK InvenSense(应美盛) - Datasheet URL: https://www.snapeda.com/parts/ICM-42688-P/TDK%20InvenSense/datasheet/ - Operating Voltage: 1.71 to 3.6V - Role Details: 6-axis IMU on rigid section near clamp centerline; orient axes to align with barbell sleeve reference frame - Role: IMU - LCSC Part Number: C1850418 - Part Type: Attitude Sensors - JLCPCB Part Class: Extended Part - Package: LGA-14_L3.0-W2.5-P0.50-TL **Pins:** - AP_CS [pin 12] - AP_SCL/AP_SCLK [pin 13] - AP_SDA/AP_SDIO/AP_SDI [pin 14] - AP_SDO/AP_AD0 [pin 1] - GND [pin 6] - INT1/INT [pin 4] - INT2/FSYNC/CLKIN [pin 9] - RESV [pin 3] - RESV [pin 7] - RESV [pin 11] - RESV [pin 10] - RESV [pin 2] - VDD [pin 8] - VDDIO [pin 5] ### Y1 — [ABS07-32.768KHZ-T](https://www.flux.ai/adrian95/abs07-32768khz-t~822.md) - Manufacturer Part Number: ABS07-32.768KHZ-T - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://abracon.com/Resonators/ABS07.pdf - Role: LFXO Crystal - Part Type: Oscillator - Role Details: 32.768 kHz external low-frequency crystal for MDBT50Q-1MV2 XL1/XL2. CL target 12.5 pF. Chosen ABS07-32.768KHZ-T from library. - Manufacturer Name: Abracon LLC **Pins:** - P1 [pin 1] - P2 [pin 2] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/mowens96531/barbellai-clip-v1~p3](https://www.flux.ai/mowens96531/barbellai-clip-v1~p3).* --- *Generated from [https://www.flux.ai/mowens96531/barbellai-clip-v1~p3](https://www.flux.ai/mowens96531/barbellai-clip-v1~p3)*