# EchoGlass ## Description Welcome to your new project. Imagine what you can build here. ## Project Details - **Owner:** smonzon - **Created:** 7/6/2026 - **Last Updated:** 7/7/2026 - **Visibility:** Public ## Key Components ### J1 — [FH12-12S-0.5SH(55)](https://www.flux.ai/adrian95/fh12-12s-0p5sh55~vdd.md) - Part Type: Connector - Manufacturer Name: Hirose Electric Co Ltd - License: https://creativecommons.org/licenses/by/4.0/ - Connector Type: FFC/FPC - Manufacturer Part Number: FH12-12S-0.5SH(55) - Connector Pitch: 0.5mm - Connector Positions: 12 - Role Details: Left half interface: power, GND returns, PDM_CLK, PDM_DATA_A/B, left SPI DAC signals - Package or Case Code: HIROSE_FH12-12S-0.5SH_55_ - Datasheet URL: https://www.hirose.com/product/document?clcode=&productname=&series=FH12&documenttype=Catalog&lang=en&documentid=D31648_en **Pins:** - 1 [pin 1] - 10 [pin 10] - 11 [pin 11] - 12 [pin 12] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] - 8 [pin 8] - 9 [pin 9] - SHIELD [pin S1] - SHIELD__1 [pin S2] ### J2 — [FH12-12S-0.5SH(55)](https://www.flux.ai/adrian95/fh12-12s-0p5sh55~vdd.md) - Manufacturer Name: Hirose Electric Co Ltd - Part Type: Connector - Connector Positions: 12 - Manufacturer Part Number: FH12-12S-0.5SH(55) - License: https://creativecommons.org/licenses/by/4.0/ - Connector Type: FFC/FPC - Datasheet URL: https://www.hirose.com/product/document?clcode=&productname=&series=FH12&documenttype=Catalog&lang=en&documentid=D31648_en - Connector Pitch: 0.5mm - Role Details: Right half interface: power, GND returns, PDM_CLK, PDM_DATA_C/D, right SPI DAC signals - Package or Case Code: HIROSE_FH12-12S-0.5SH_55_ **Pins:** - 1 [pin 1] - 10 [pin 10] - 11 [pin 11] - 12 [pin 12] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] - 8 [pin 8] - 9 [pin 9] - SHIELD [pin S1] - SHIELD__1 [pin S2] ### LS1 — [SMS-1308MS-2-R](https://www.flux.ai/cherepanyadima/sms-1308ms-2-r.md) - Role Details: Placeholder only: library part is audio-range; final BOM must use user-selected broadband dynamic speaker/transducer - Datasheet URL: https://puiaudio.com/file/specs-SMS-1308MS-2-R.pdf - Manufacturer Name: Pui Audio - Role: Signal Generation - Part Type: SPEAKER - Manufacturer Part Number: SMS-1308MS-2-R **Pins:** - ~ [pin LEAD] - ~ [pin LEAD+] ### LS2 — [SMS-1308MS-2-R](https://www.flux.ai/cherepanyadima/sms-1308ms-2-r.md) - Manufacturer Part Number: SMS-1308MS-2-R - Role: Signal Generation - Part Type: SPEAKER - Manufacturer Name: Pui Audio - Role Details: Placeholder only: library part is audio-range; final BOM must use user-selected broadband dynamic speaker/transducer - Datasheet URL: https://puiaudio.com/file/specs-SMS-1308MS-2-R.pdf **Pins:** - ~ [pin LEAD] - ~ [pin LEAD+] ### U1 — [SPH0641LU4H-1](https://www.flux.ai/vasy_skral/sph0641lu4h-1~6ha.md) - Manufacturer Part Number: SPH0641LU4H-1 - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Knowles%20Acoustics%20PDFs/SPH0641LU4H-1.PDF - Role Details: SELECT=GND: asserts DATA on falling clock edge; FPGA latches on rising edge - Manufacturer Name: Knowles - Role: PDM MEMS microphone - Part Type: RF Filter **Pins:** - CLOCK [pin 4] - DATA [pin 1] - GND [pin 3] - SEL [pin 2] - VDD [pin 5] ### U10 — [MCP4922T-E/SL](https://www.flux.ai/adrian95/mcp4922t-esl.md) - Manufacturer Part Number: MCP4922T-E/SL - Symbol Style: parametric-v1 - Role Details: Right TX SPI DAC; use channel A output, 3.3 V supply/reference; ~4.5 us settling is practical but not ideal for high-fidelity 100 kHz arbitrary waveforms - Part Type: Integrated Circuit - Role: Signal Generation - Manufacturer Name: Microchip Technology - Package or Case Code: TO - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/477179c4144575cc57d98b162cbc9d5b2b76e8cd015e085b7274ec82fd884696.pdf **Pins:** - ~CS [pin 3] - ~LDAC [pin 8] - ~SHDN [pin 9] - NC [pin 2] - NC_2 [pin 6] - NC_3 [pin 7] - SCK [pin 4] - SDI [pin 5] - VDD [pin 1] - VOUTA [pin 14] - VOUTB [pin 10] - VREFA [pin 13] - VREFB [pin 11] - VSS [pin 12] ### U11 — [AD8397ARZ-REEL](https://www.flux.ai/lcsc/ad8397arz-reel~67kb.md) - Package or Case Code: SOIC-8_L5.0-W4.0-P1.27-LS6.0-BL - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2008201810_Analog-Devices-AD8397ARZ-REEL_C652765.pdf - Manufacturer Name: ADI(亚德诺) - Part Type: Operational Amplifier - LCSC Part Number: C652765 - Manufacturer Part Number: AD8397ARZ-REEL - Role Details: Left speaker linear driver on 5 V rail; wideband alternative to audio Class-D, validate thermal/current with final 4-8 ohm transducer - JLCPCB Part Class: Extended Part - Role: Amplification - Product Info Url: https://lcsc.com/product-detail/Pre-ordered-Products_Analog-Devices_AD8397ARZ-REEL_Analog-Devices-ADI-LINEAR-AD8397ARZ-REEL_C652765.html **Pins:** - –IN1 [pin 2] - –IN2 [pin 6] - –VS [pin 4] - +IN1 [pin 3] - +IN2 [pin 5] - +VS [pin 8] - OUT1 [pin 1] - OUT2 [pin 7] ### U12 — [AD8397ARZ-REEL](https://www.flux.ai/lcsc/ad8397arz-reel~67kb.md) - Product Info Url: https://lcsc.com/product-detail/Pre-ordered-Products_Analog-Devices_AD8397ARZ-REEL_Analog-Devices-ADI-LINEAR-AD8397ARZ-REEL_C652765.html - JLCPCB Part Class: Extended Part - Package or Case Code: SOIC-8_L5.0-W4.0-P1.27-LS6.0-BL - Manufacturer Name: ADI(亚德诺) - Role Details: Right speaker linear driver on 5 V rail; wideband alternative to audio Class-D, validate thermal/current with final 4-8 ohm transducer - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2008201810_Analog-Devices-AD8397ARZ-REEL_C652765.pdf - Role: Amplification - LCSC Part Number: C652765 - Manufacturer Part Number: AD8397ARZ-REEL - Part Type: Operational Amplifier **Pins:** - –IN1 [pin 2] - –IN2 [pin 6] - –VS [pin 4] - +IN1 [pin 3] - +IN2 [pin 5] - +VS [pin 8] - OUT1 [pin 1] - OUT2 [pin 7] ### U2 — [SPH0641LU4H-1](https://www.flux.ai/vasy_skral/sph0641lu4h-1~6ha.md) - Part Type: RF Filter - Role: PDM MEMS microphone - Role Details: SELECT=VDD: asserts DATA on rising clock edge; FPGA latches on falling edge - Manufacturer Part Number: SPH0641LU4H-1 - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Knowles%20Acoustics%20PDFs/SPH0641LU4H-1.PDF - Manufacturer Name: Knowles **Pins:** - CLOCK [pin 4] - DATA [pin 1] - GND [pin 3] - SEL [pin 2] - VDD [pin 5] ### U3 — [SPH0641LU4H-1](https://www.flux.ai/vasy_skral/sph0641lu4h-1~6ha.md) - Role: PDM MEMS microphone - Role Details: SELECT=GND: asserts DATA on falling clock edge; FPGA latches on rising edge - Part Type: RF Filter - Manufacturer Part Number: SPH0641LU4H-1 - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Knowles%20Acoustics%20PDFs/SPH0641LU4H-1.PDF - Manufacturer Name: Knowles **Pins:** - CLOCK [pin 4] - DATA [pin 1] - GND [pin 3] - SEL [pin 2] - VDD [pin 5] ### U4 — [SPH0641LU4H-1](https://www.flux.ai/vasy_skral/sph0641lu4h-1~6ha.md) - Role Details: SELECT=VDD: asserts DATA on rising clock edge; FPGA latches on falling edge - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Knowles%20Acoustics%20PDFs/SPH0641LU4H-1.PDF - Manufacturer Part Number: SPH0641LU4H-1 - Manufacturer Name: Knowles - Part Type: RF Filter - Role: PDM MEMS microphone **Pins:** - CLOCK [pin 4] - DATA [pin 1] - GND [pin 3] - SEL [pin 2] - VDD [pin 5] ### U5 — [SPH0641LU4H-1](https://www.flux.ai/vasy_skral/sph0641lu4h-1~6ha.md) - Role: PDM MEMS microphone - Part Type: RF Filter - Manufacturer Name: Knowles - Manufacturer Part Number: SPH0641LU4H-1 - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Knowles%20Acoustics%20PDFs/SPH0641LU4H-1.PDF - Role Details: SELECT=GND: asserts DATA on falling clock edge; FPGA latches on rising edge **Pins:** - CLOCK [pin 4] - DATA [pin 1] - GND [pin 3] - SEL [pin 2] - VDD [pin 5] ### U6 — [SPH0641LU4H-1](https://www.flux.ai/vasy_skral/sph0641lu4h-1~6ha.md) - Manufacturer Name: Knowles - Role: PDM MEMS microphone - Manufacturer Part Number: SPH0641LU4H-1 - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Knowles%20Acoustics%20PDFs/SPH0641LU4H-1.PDF - Part Type: RF Filter - Role Details: SELECT=VDD: asserts DATA on rising clock edge; FPGA latches on falling edge **Pins:** - CLOCK [pin 4] - DATA [pin 1] - GND [pin 3] - SEL [pin 2] - VDD [pin 5] ### U7 — [SPH0641LU4H-1](https://www.flux.ai/vasy_skral/sph0641lu4h-1~6ha.md) - Part Type: RF Filter - Manufacturer Name: Knowles - Manufacturer Part Number: SPH0641LU4H-1 - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Knowles%20Acoustics%20PDFs/SPH0641LU4H-1.PDF - Role: PDM MEMS microphone - Role Details: SELECT=GND: asserts DATA on falling clock edge; FPGA latches on rising edge **Pins:** - CLOCK [pin 4] - DATA [pin 1] - GND [pin 3] - SEL [pin 2] - VDD [pin 5] ### U8 — [SPH0641LU4H-1](https://www.flux.ai/vasy_skral/sph0641lu4h-1~6ha.md) - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Knowles%20Acoustics%20PDFs/SPH0641LU4H-1.PDF - Manufacturer Part Number: SPH0641LU4H-1 - Role: PDM MEMS microphone - Manufacturer Name: Knowles - Part Type: RF Filter - Role Details: SELECT=VDD: asserts DATA on rising clock edge; FPGA latches on falling edge **Pins:** - CLOCK [pin 4] - DATA [pin 1] - GND [pin 3] - SEL [pin 2] - VDD [pin 5] ### U9 — [MCP4922T-E/SL](https://www.flux.ai/adrian95/mcp4922t-esl.md) - Role: Signal Generation - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/477179c4144575cc57d98b162cbc9d5b2b76e8cd015e085b7274ec82fd884696.pdf - Package or Case Code: TO - Manufacturer Name: Microchip Technology - Part Type: Integrated Circuit - Role Details: Left TX SPI DAC; use channel A output, 3.3 V supply/reference; ~4.5 us settling is practical but not ideal for high-fidelity 100 kHz arbitrary waveforms - Symbol Style: parametric-v1 - Manufacturer Part Number: MCP4922T-E/SL **Pins:** - ~CS [pin 3] - ~LDAC [pin 8] - ~SHDN [pin 9] - NC [pin 2] - NC_2 [pin 6] - NC_3 [pin 7] - SCK [pin 4] - SDI [pin 5] - VDD [pin 1] - VOUTA [pin 14] - VOUTB [pin 10] - VREFA [pin 13] - VREFB [pin 11] - VSS [pin 12] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/smonzon/echoglass~6z](https://www.flux.ai/smonzon/echoglass~6z).* --- *Generated from [https://www.flux.ai/smonzon/echoglass~6z](https://www.flux.ai/smonzon/echoglass~6z)*