# NeuroVox-v2 77e4 ## Description NeuroVox-v2 — 200mm × 50mm two-layer mixed-signal PCB with split analog/digital zones, defined power rails, and ESP32-S3 antenna clearance. ## Project Details - **Owner:** markusjames - **Created:** 6/13/2026 - **Last Updated:** 6/13/2026 - **Visibility:** Public - **Operating Voltage:** 3.7V - **Domain:** Mixed-signal audio - **Power Requirements:** Li-ion battery - **Connectivity:** ESP32-S3 - **Implementation Details:** 2-layer 200mm x 50mm PCB with Power, Analog, and Digital placement zones - **Stars:** 2 ## Key Components ### BZ1 — [CMT-1203-SMT-TR](https://www.flux.ai/adrian95/cmt-1203-smt-tr~ys2.md) - Manufacturer Part Number: CMT-1203-SMT-TR - Datasheet URL: https://www.cuidevices.com/product/resource/cmt-1203-smt-tr.pdf - Manufacturer Name: Same Sky (Formerly CUI Devices) - Part Type: Buzzer - Role: Piezo buzzer / transducer - Role Details: Closest available SMD 5V piezo is externally driven; GPIO48 provides buzzer waveform through R_BZ. - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - - [pin 2] - + [pin 1] ### D1 — [SS14](https://www.flux.ai/lcsc/ss14~t679.md) - Part Type: Schottky Barrier Diodes (SBD) - Max Reverse Voltage: 40V - Forward Voltage: 0.45V-0.50V - JLCPCB Part Class: Extended Part - Role: Reverse Polarity Protection - Datasheet URL: https://www.lcsc.com/datasheet/C2766061.pdf?spm=wm.sxq.inf.ggs&lcsc_vid=FlkNBAIDRQULVABfFAVZBgZVFVZYBgZSQ1NeBVIFQlExVlNeR1JfUFRQQFlfUzsOAxUeFF5JWBYZEEoKFBINSQcJGk4dAgUUFAk%3D - Diode Type: Schottky Diode - License: https://creativecommons.org/licenses/by/4.0/ - LCSC Part Number: C2766061 - Role Details: SS14 SMA: anode at VBAT_SW, cathode at 5V per user request. - Package or Case Code: SMA_L4.3-W2.7-LS5.1-RD - Manufacturer Name: WPMtek(维攀) - Manufacturer Part Number: SS14 **Pins:** - A [pin 2] - K [pin 1] ### FB1 — [BLM18AG601SN1D](https://www.flux.ai/adrian95/blm18ag601sn1d~k47.md) - Role Details: Requested exact bead BLM18PG601SN1D; library closest available is Murata 0603 600 ohm bead. Replace with exact MPN before production if required. - Datasheet URL: https://www.murata.com/en-us/products/productdata/8796738650142/ENFA0003.pdf - Manufacturer Part Number: BLM18AG601SN1D - License: https://creativecommons.org/licenses/by/4.0/ - Substitute Manufacturer Part Number: BLM18PG601SN1D - Part Type: Ferrite Bead - Role: AGND-DGND single-point ferrite bead - Manufacturer Name: Murata Electronics **Pins:** - 1 [pin 1] - 2 [pin 2] ### J_EMG1 — [BM03B-SRSS-TB(LF)(SN)](https://www.flux.ai/lcsc/bm03b-srss-tblfsn~a391.md) - Product Info Url: https://lcsc.com/product-detail/Others_JST-Sales-America__JST-Sales-America-BM03B-SRSS-TB-LF-SN_C160389.html - Role Details: JST-SH 1.0mm 3-pin electrode input: Pin 1 IN+, Pin 2 IN-, Pin 3 AGND reference. - Part Type: Wire To Board / Wire To Wire Connector - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_JST-BM03B-SRSS-TB-LF-SN_C160389.pdf - Manufacturer Part Number: BM03B-SRSS-TB(LF)(SN) - Role: Sensing (Shunt) - Manufacturer Name: JST - JLCPCB Part Class: Extended Part - Package or Case Code: CONN-SMD-3P-P1.00_BM03B-SRSS-TB-LF-SN - LCSC Part Number: C160389 **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] ### J_EMG2 — [BM03B-SRSS-TB(LF)(SN)](https://www.flux.ai/lcsc/bm03b-srss-tblfsn~a391.md) - Role Details: JST-SH 1.0mm 3-pin electrode input: Pin 1 IN+, Pin 2 IN-, Pin 3 AGND reference. - Product Info Url: https://lcsc.com/product-detail/Others_JST-Sales-America__JST-Sales-America-BM03B-SRSS-TB-LF-SN_C160389.html - Role: Sensing (Shunt) - Part Type: Wire To Board / Wire To Wire Connector - Manufacturer Part Number: BM03B-SRSS-TB(LF)(SN) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_JST-BM03B-SRSS-TB-LF-SN_C160389.pdf - Package or Case Code: CONN-SMD-3P-P1.00_BM03B-SRSS-TB-LF-SN - JLCPCB Part Class: Extended Part - LCSC Part Number: C160389 - Manufacturer Name: JST **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] ### J_EMG3 — [BM03B-SRSS-TB(LF)(SN)](https://www.flux.ai/lcsc/bm03b-srss-tblfsn~a391.md) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_JST-BM03B-SRSS-TB-LF-SN_C160389.pdf - Role Details: JST-SH 1.0mm 3-pin electrode input: Pin 1 IN+, Pin 2 IN-, Pin 3 AGND reference. - Manufacturer Part Number: BM03B-SRSS-TB(LF)(SN) - Manufacturer Name: JST - JLCPCB Part Class: Extended Part - Package or Case Code: CONN-SMD-3P-P1.00_BM03B-SRSS-TB-LF-SN - LCSC Part Number: C160389 - Product Info Url: https://lcsc.com/product-detail/Others_JST-Sales-America__JST-Sales-America-BM03B-SRSS-TB-LF-SN_C160389.html - Role: Sensing (Shunt) - Part Type: Wire To Board / Wire To Wire Connector **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] ### J_EMG4 — [BM03B-SRSS-TB(LF)(SN)](https://www.flux.ai/lcsc/bm03b-srss-tblfsn~a391.md) - Part Type: Wire To Board / Wire To Wire Connector - Product Info Url: https://lcsc.com/product-detail/Others_JST-Sales-America__JST-Sales-America-BM03B-SRSS-TB-LF-SN_C160389.html - LCSC Part Number: C160389 - Package or Case Code: CONN-SMD-3P-P1.00_BM03B-SRSS-TB-LF-SN - JLCPCB Part Class: Extended Part - Manufacturer Name: JST - Role Details: JST-SH 1.0mm 3-pin electrode input: Pin 1 IN+, Pin 2 IN-, Pin 3 AGND reference. - Manufacturer Part Number: BM03B-SRSS-TB(LF)(SN) - Role: Sensing (Shunt) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_JST-BM03B-SRSS-TB-LF-SN_C160389.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] ### J_HAP — [61300211121](https://www.flux.ai/adrian95/61300211121~11.md) - Role: Power Input - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Manufacturer Name: Würth Elektronik - Role Details: Through-hole motor wire pads labeled HAP_MOTOR+ and HAP_MOTOR- at top edge near user x=150mm. - Datasheet URL: https://www.we-online.com/components/products/datasheet/61300211121.pdf - Manufacturer Part Number: 61300211121 **Pins:** - P1 [pin 1] - P2 [pin 2] ### J_PROG — [TSW-106-06-T-S](https://www.flux.ai/adrian95/tsw-106-06-t-s.md) - Part Type: Connectors - Role Details: 1x6 programming header: 3V3, DGND, TX0, RX0, EN through 10k, IO0. - Manufacturer Part Number: TSW-106-06-T-S - Role: Logic-level Shifting - Manufacturer Name: Samtec - License: https://creativecommons.org/licenses/by/4.0/ - Mount: PCB - Datasheet URL: http://suddendocs.samtec.com/prints/tsw-xxx-xx-xxx-x-xx-xxx-mkt.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] ### J_SPK — [61300211121](https://www.flux.ai/adrian95/61300211121~11.md) - Manufacturer Name: Würth Elektronik - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Role: Speaker output connector - Role Details: 2-pin 2.54mm through-hole header used as SPK+/SPK- pads at x=165mm top edge; OUTP/OUTN connect directly with 1.0mm traces. - Datasheet URL: https://www.we-online.com/components/products/datasheet/61300211121.pdf - Manufacturer Part Number: 61300211121 **Pins:** - P1 [pin 1] - P2 [pin 2] ### J1 — [USB4215-03-A](https://www.flux.ai/adrian95/usb4215-03-a~kg3.md) - Role Details: USB-C input at left board edge centered vertically. VBUS=5V charging input, GND=AGND, CC1/CC2 each pulled down with 5.1kΩ to AGND. - Part Type: USB C - Manufacturer Name: GCT - License: https://creativecommons.org/licenses/by/4.0/ - Package or Case Code: GCT_USB4215-03-A_REVA - Symbol Style: parametric-v1 - Datasheet URL: https://gct.co/files/specs/usb4215-spec.pdf - Role: Power Input - Manufacturer Part Number: USB4215-03-A **Pins:** - CC1 [pin A5] - CC2 [pin B5] - DN1 [pin A7] - DN2 [pin B7] - DP1 [pin A6] - DP2 [pin B6] - GND_A [pin A1_B12] - GND_B [pin B1_A12] - SBU1 [pin A8] - SBU2 [pin B8] - SHIELD [pin SH1] - SHIELD [pin SH4] - SHIELD [pin SH2] - SHIELD [pin SH3] - VBUS_A [pin A4_B9] - VBUS_B [pin B4_A9] ### J2 — [S2B-PH-K-S(LF)(SN)](https://www.flux.ai/adrian95/s2b-ph-k-slfsn~brb.md) - Manufacturer Part Number: S2B-PH-K-S(LF)(SN) - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/ePH.pdf - Manufacturer Name: JST Sales America Inc. - Role: Power Input - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Battery input at Zone A bottom edge centered at user x=10mm; Pin 1=VBAT, Pin 2=AGND. **Pins:** - P1 [pin 1] - P2 [pin 2] ### LED_CHG — [BZ-C0603-G3-F1](https://www.flux.ai/lcsc/bz-c0603-g3-f1~v6dg.md) - Part Type: Light Emitting Diodes (LED) - Role: Human Interface - JLCPCB Part Class: Extended Part - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: BZ-C0603-G3-F1 - LCSC Part Number: C2833058 - Manufacturer Name: baizou(百洲) - Role Details: Green charge-status LED in series with 1kΩ from MCP73831 STAT to AGND per user request. - Datasheet URL: https://www.lcsc.com/datasheet/C2833058.pdf - Package or Case Code: LED0603-R-RD_GREEN **Pins:** - A [pin 1] - K [pin 2] ### LED1 — [MHPC3528CRGBCT](https://www.flux.ai/jharwinbarrozo/mhpc3528crgbct~r7t.md) - Manufacturer Part Number: MHPC3528CRGBCT - Part Type: LED - Manufacturer Name: MEIHUA - Role: Red status LED - Role Details: Requested 0402 common-cathode RGB; closest library part is common-cathode SMD RGB. Red anode via 1k to GPIO4. - Datasheet URL: https://datasheet.lcsc.com/lcsc/2202141600_MEIHUA-MHPC3528CRGBCT_C2962096.pdf - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - P1 [pin 1] - P2 [pin 2] - P3 [pin 3] - P4 [pin 4] ### LED2 — [MHPC3528CRGBCT](https://www.flux.ai/jharwinbarrozo/mhpc3528crgbct~r7t.md) - Manufacturer Part Number: MHPC3528CRGBCT - Part Type: LED - Role: Green status LED - Role Details: Requested 0402 common-cathode RGB; closest library part is common-cathode SMD RGB. Green anode via 1k to GPIO2. - Manufacturer Name: MEIHUA - Datasheet URL: https://datasheet.lcsc.com/lcsc/2202141600_MEIHUA-MHPC3528CRGBCT_C2962096.pdf - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - P1 [pin 1] - P2 [pin 2] - P3 [pin 3] - P4 [pin 4] ### LED3 — [MHPC3528CRGBCT](https://www.flux.ai/jharwinbarrozo/mhpc3528crgbct~r7t.md) - Role Details: Requested 0402 common-cathode RGB; closest library part is common-cathode SMD RGB. Blue anode remapped from GPIO25 to GPIO47. - Role: Blue status LED - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://datasheet.lcsc.com/lcsc/2202141600_MEIHUA-MHPC3528CRGBCT_C2962096.pdf - Manufacturer Name: MEIHUA - Part Type: LED - Manufacturer Part Number: MHPC3528CRGBCT **Pins:** - P1 [pin 1] - P2 [pin 2] - P3 [pin 3] - P4 [pin 4] ### Q1 — [SI2301CDS-T1-E3](https://www.flux.ai/lcsc/si2301cds-t1-e3~ziyx.md) - LCSC Part Number: C145226 - JLCPCB Part Class: Extended Part - Part Type: MOSFETs - Manufacturer Part Number: SI2301CDS-T1-E3 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1811091923_Vishay-Intertech-SI2301CDS-T1-E3_C145226.pdf - Package or Case Code: SOT-23_L2.9-W1.3-P1.90-LS2.4-BR - Role Details: P-channel battery input switch: source=VBAT, drain=VBAT_SW, gate pulled to VBAT and driven low by MCP73831 STAT net per user request. - Manufacturer Name: VISHAY(威世) - Role: Switching - Product Info Url: https://lcsc.com/product-detail/MOSFET_VISHAY_SI2301CDS-T1-E3_SI2301CDS-T1-E3_C145226.html **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### U_ADC — [ADS1299IPAGR](https://www.flux.ai/adrian95/ads1299ipagr~gsz.md) - Datasheet URL: https://www.ti.com/lit/ds/symlink/ads1299.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Texas Instruments - Part Type: Integrated Circuit - Manufacturer Part Number: ADS1299IPAGR - Role: Sensing (Shunt) - Role Details: ADS1299 TQFP-64 at Zone C; SPI to ESP32-S3, analog inputs from Zone B EMG outputs, analog ground on AGND side of FB1. **Pins:** - ~CS [pin 39] - ~DRDY [pin 47] - ~PWDN [pin 35] - ~RESET [pin 36] - AVDD_1 [pin 19] - AVDD_2 [pin 22] - AVDD_3 [pin 23] - AVDD_4 [pin 56] - AVDD_5 [pin 59] - AVDD1 [pin 54] - AVSS_1 [pin 20] - AVSS_2 [pin 21] - AVSS_3 [pin 32] - AVSS_4 [pin 57] - AVSS_5 [pin 58] - AVSS1 [pin 53] - BIASIN [pin 62] - BIASINV [pin 61] - BIASOUT [pin 63] - BIASREF [pin 60] - CLK [pin 37] - CLKSEL [pin 52] - DAISY_IN [pin 41] - DGND_1 [pin 33] - DGND_2 [pin 49] - DGND_3 [pin 51] - DIN [pin 34] - DOUT [pin 43] - DVDD_1 [pin 48] - DVDD_2 [pin 50] - GPIO1 [pin 42] - GPIO2 [pin 44] - GPIO3 [pin 45] - GPIO4 [pin 46] - IN1N [pin 15] - IN1P [pin 16] - IN2N [pin 13] - IN2P [pin 14] - IN3N [pin 11] - IN3P [pin 12] - IN4N [pin 9] - IN4P [pin 10] - IN5N [pin 7] - IN5P [pin 8] - IN6N [pin 5] - IN6P [pin 6] - IN7N [pin 3] - IN7P [pin 4] - IN8N [pin 1] - IN8P [pin 2] - NC_1 [pin 27] - NC_2 [pin 29] - RESERVED [pin 64] - RESV1 [pin 31] - SCLK [pin 40] - SRB1 [pin 17] - SRB2 [pin 18] - START [pin 38] - VCAP1 [pin 28] - VCAP2 [pin 30] - VCAP3 [pin 55] - VCAP4 [pin 26] - VREFN [pin 25] - VREFP [pin 24] ### U_AMP — [MAX98357AEWL+T](https://www.flux.ai/adrian95/max98357aewlplust~m5s.md) - Part Type: Integrated Circuit - Manufacturer Part Number: MAX98357AEWL+T - Datasheet URL: https://www.analog.com/media/en/technical-documentation/data-sheets/max98357a-max98357b.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Analog Devices Inc./Maxim Integrated - Role Details: MAX98357A WLCSP-9, BTL output. VDD on 5V, I2S from ESP32-S3 GPIO16/17/15, no series speaker capacitor. - Role: I2S Class-D audio amplifier **Pins:** - ~SD_MODE [pin A1] - BCLK [pin C1] - DIN [pin B1] - GAIN_SLOT [pin B2] - GND [pin C2] - LRCLK [pin C3] - OUTN [pin B3] - OUTP [pin A3] - VDD [pin A2] ### U_BOOST — [TPS61023DRLR](https://www.flux.ai/adrian95/tps61023drlr~z3.md) - Part Type: Integrated Circuit - Role Details: Boost converter in TI DRL/SOT-563-6 package; VIN=VBAT_SW, VOUT=5V, GND=AGND, FB divider 10k/20k per user request. - Role: Power Conversion - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Ftps61023 - Manufacturer Name: Texas Instruments - Manufacturer Part Number: TPS61023DRLR **Pins:** - EN [pin 2] - FB [pin 1] - GND [pin 4] - SW [pin 5] - VIN [pin 3] - VOUT [pin 6] ### U_CHG — [MCP73831T-2ATI/OT](https://www.flux.ai/adrian95/mcp73831t-2atiot~46p.md) - Role: Power Conversion - Role Details: LiPo charger: VDD=5V USB input, VBAT=VBAT, VSS=AGND, PROG through 10k to AGND for 100mA, STAT drives charge LED and Q1 gate control. - Datasheet URL: https://ww1.microchip.com/downloads/en/DeviceDoc/MCP73831-Family-Data-Sheet-DS20001984H.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Integrated Circuit - Manufacturer Name: Microchip Technology - Manufacturer Part Number: MCP73831T-2ATI/OT **Pins:** - PROG [pin 5] - STAT [pin 1] - VBAT [pin 3] - VDD [pin 4] - VSS [pin 2] ### U_EMG1 — [AD8232ACPZ-R7](https://www.flux.ai/adrian95/ad8232acpz-r7~egm.md) - Manufacturer Part Number: AD8232ACPZ-R7 - Part Type: Integrated Circuit - Role: Amplification - Datasheet URL: https://www.analog.com/media/en/technical-documentation/data-sheets/AD8232.pdf - Manufacturer Name: Analog Devices Inc. - Role Details: AD8232 channel 1, exact MPN is 20-LFCSP package; powered from 3V3 and AGND. - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - -IN [pin 3] - +IN [pin 2] - +VS [pin 17] - ~SDN [pin 13] - AC/~DC [pin 14] - FR [pin 15] - GND_1 [pin 16] - GND_2 [pin 21] - HPDRIVE [pin 1] - HPSENSE [pin 20] - IAOUT [pin 19] - LOD- [pin 11] - LOD+ [pin 12] - OPAMP- [pin 9] - OPAMP+ [pin 7] - OUT [pin 10] - REFIN [pin 18] - REFOUT [pin 8] - RLD [pin 5] - RLDFB [pin 4] - SW [pin 6] ### U_EMG2 — [AD8232ACPZ-R7](https://www.flux.ai/adrian95/ad8232acpz-r7~egm.md) - Manufacturer Name: Analog Devices Inc. - License: https://creativecommons.org/licenses/by/4.0/ - Role: Amplification - Role Details: AD8232 channel 2, exact MPN is 20-LFCSP package; powered from 3V3 and AGND. - Part Type: Integrated Circuit - Manufacturer Part Number: AD8232ACPZ-R7 - Datasheet URL: https://www.analog.com/media/en/technical-documentation/data-sheets/AD8232.pdf **Pins:** - -IN [pin 3] - +IN [pin 2] - +VS [pin 17] - ~SDN [pin 13] - AC/~DC [pin 14] - FR [pin 15] - GND_1 [pin 16] - GND_2 [pin 21] - HPDRIVE [pin 1] - HPSENSE [pin 20] - IAOUT [pin 19] - LOD- [pin 11] - LOD+ [pin 12] - OPAMP- [pin 9] - OPAMP+ [pin 7] - OUT [pin 10] - REFIN [pin 18] - REFOUT [pin 8] - RLD [pin 5] - RLDFB [pin 4] - SW [pin 6] ### U_EMG3 — [AD8232ACPZ-R7](https://www.flux.ai/adrian95/ad8232acpz-r7~egm.md) - Role: Amplification - Manufacturer Part Number: AD8232ACPZ-R7 - Part Type: Integrated Circuit - Datasheet URL: https://www.analog.com/media/en/technical-documentation/data-sheets/AD8232.pdf - Manufacturer Name: Analog Devices Inc. - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: AD8232 channel 3, exact MPN is 20-LFCSP package; powered from 3V3 and AGND. **Pins:** - -IN [pin 3] - +IN [pin 2] - +VS [pin 17] - ~SDN [pin 13] - AC/~DC [pin 14] - FR [pin 15] - GND_1 [pin 16] - GND_2 [pin 21] - HPDRIVE [pin 1] - HPSENSE [pin 20] - IAOUT [pin 19] - LOD- [pin 11] - LOD+ [pin 12] - OPAMP- [pin 9] - OPAMP+ [pin 7] - OUT [pin 10] - REFIN [pin 18] - REFOUT [pin 8] - RLD [pin 5] - RLDFB [pin 4] - SW [pin 6] ### U_EMG4 — [AD8232ACPZ-R7](https://www.flux.ai/adrian95/ad8232acpz-r7~egm.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Analog Devices Inc. - Role Details: AD8232 channel 4, exact MPN is 20-LFCSP package; powered from 3V3 and AGND. - Datasheet URL: https://www.analog.com/media/en/technical-documentation/data-sheets/AD8232.pdf - Part Type: Integrated Circuit - Manufacturer Part Number: AD8232ACPZ-R7 - Role: Amplification **Pins:** - -IN [pin 3] - +IN [pin 2] - +VS [pin 17] - ~SDN [pin 13] - AC/~DC [pin 14] - FR [pin 15] - GND_1 [pin 16] - GND_2 [pin 21] - HPDRIVE [pin 1] - HPSENSE [pin 20] - IAOUT [pin 19] - LOD- [pin 11] - LOD+ [pin 12] - OPAMP- [pin 9] - OPAMP+ [pin 7] - OUT [pin 10] - REFIN [pin 18] - REFOUT [pin 8] - RLD [pin 5] - RLDFB [pin 4] - SW [pin 6] ### U_HAP — [DRV2605LYZFR](https://www.flux.ai/jecstronic/drv2605lyzfr~jad.md) - Role Details: DRV2605LYZFR haptic driver; exact MPN is 9-ball DSBGA, not DSBGA-12. I2C plus EN from ESP32 GPIO26; OUT+/OUT- to motor pads. - Part Type: Integrated Circuit - Manufacturer Name: Texas Instruments Inc. - License: https://creativecommons.org/licenses/by/4.0/ - Role: Power Conversion - Datasheet URL: https://www.ti.com/lit/ds/symlink/drv2605l.pdf - Manufacturer Part Number: DRV2605LYZFR **Pins:** - EN [pin A1] - GND [pin B3] - IN/TRIG [pin B1] - OUT- [pin C3] - OUT+ [pin A3] - REG [pin A2] - SCL [pin C1] - SDA [pin B2] - VDD [pin C2] ### U_IMU — [BNO055](https://www.flux.ai/kicad-part-library/bno055~v1.md) - Package or Case Code: LGA-28_5.2x3.8mm_P0.5mm - Role: Sensing (Shunt) - Role Details: Closest library BNO055 LGA-28 family part used; requested exact ordering suffix BNO055BST must be verified before release. I2C address 0x28 via ADR=DGND. - Manufacturer Name: Texas Instruments Inc. - Manufacturer Part Number: BNO055BST - Datasheet URL: https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bno055-ds000.pdf **Pins:** - ~{BOOT_LOAD_PIN} [pin 4] - ~{RESET} [pin 11] - BL_IND [pin 10] - CAP [pin 9] - COM0 [pin 20] - COM1 [pin 19] - COM2 [pin 18] - COM3 [pin 17] - GND [pin 2] - GNDIO [pin 25] - GNDIO [pin 16] - GNDIO [pin 15] - INT [pin 14] - PIN1 [pin 1] - PIN12 [pin 12] - PIN13 [pin 13] - PIN21 [pin 21] - PIN22 [pin 22] - PIN23 [pin 23] - PIN24 [pin 24] - PIN7 [pin 7] - PIN8 [pin 8] - PS0 [pin 6] - PS1 [pin 5] - VDD [pin 3] - VDDIO [pin 28] - XIN32 [pin 27] - XOUT32 [pin 26] ### U_INA — [INA333AIDGKR](https://www.flux.ai/adrian95/ina333aidgkr~t0s.md) - Role: Amplification - Manufacturer Part Number: INA333AIDGKR - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: INA333AIDGKR instrumentation amplifier; exact MPN package is VSSOP-8/MSOP-8, not SOIC-8. IN+=EMG_OUT3, IN-=EMG_OUT4, RG=100kΩ, OUT=INA_OUT. - Manufacturer Name: Texas Instruments - Part Type: Operational Amplifier (OP-AMP) - Package or Case Code: SOP65P490X110-8N - Datasheet URL: http://www.ti.com/lit/ds/symlink/ina333.pdf **Pins:** - REF [pin 5] - RG_1 [pin 1] - RG_2 [pin 8] - V- [pin 4] - V+ [pin 7] - VIN- [pin 2] - VIN+ [pin 3] - VOUT [pin 6] ### U_LDO — [AMS1117-3.3](https://www.flux.ai/vasy_skral/ams1117-33~34.md) - Part Type: Integrated Circuit - Role Details: AMS1117-3.3 SOT-223: VIN=5V, VOUT=3V3, GND=DGND. Thermal budget depends on later 3V3 load current. - Symbol Style: Parametric - Manufacturer Name: AMS - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: http://www.advanced-monolithic.com/pdf/ds1117.pdf - Role: Power Conversion - Manufacturer Part Number: AMS1117-3.3 **Pins:** - GND [pin 1] - TAB(VOUT) [pin 4] - VIN [pin 3] - VOUT [pin 2] ### U_MCU — [ESP32-S3-WROOM-1U-N16R8](https://www.flux.ai/adrian95/esp32-s3-wroom-1u-n16r8~1pb.md) - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32-s3-wroom-1_wroom-1u_datasheet_en.pdf - Role: Logic-level Shifting - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Espressif Systems - Part Type: Module - Symbol Style: parametric-v1 - Manufacturer Part Number: ESP32-S3-WROOM-1U-N16R8 - Role Details: ESP32-S3-WROOM-1U MCU at Zone C; external antenna/U.FL variant. User-requested antenna keepout still preserved at right edge; verify RF integration before release. **Pins:** - 3V3 [pin 2] - EN [pin 3] - GND [pin 41_3] - GND [pin 41_6] - GND [pin 41_7] - GND [pin 41_5] - GND [pin 41_2] - GND [pin 40] - GND [pin 41_1] - GND [pin 1] - GND [pin 41_9] - GND [pin 41_8] - GND [pin 41_4] - IO0 [pin 27] - IO1 [pin 39] - IO10 [pin 18] - IO11 [pin 19] - IO12 [pin 20] - IO13 [pin 21] - IO14 [pin 22] - IO15 [pin 8] - IO16 [pin 9] - IO17 [pin 10] - IO18 [pin 11] - IO19 [pin 13] - IO2 [pin 38] - IO20 [pin 14] - IO21 [pin 23] - IO3 [pin 15] - IO35 [pin 28] - IO36 [pin 29] - IO37 [pin 30] - IO38 [pin 31] - IO39 [pin 32] - IO4 [pin 4] - IO40 [pin 33] - IO41 [pin 34] - IO42 [pin 35] - IO45 [pin 26] - IO46 [pin 16] - IO47 [pin 24] - IO48 [pin 25] - IO5 [pin 5] - IO6 [pin 6] - IO7 [pin 7] - IO8 [pin 12] - IO9 [pin 17] - RXD0 [pin 36] - TXD0 [pin 37] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/markusjames/neurovox-v2-77e4~jz](https://www.flux.ai/markusjames/neurovox-v2-77e4~jz).* --- *Generated from [https://www.flux.ai/markusjames/neurovox-v2-77e4~jz](https://www.flux.ai/markusjames/neurovox-v2-77e4~jz)*