# FLUX-3308 - routing touchpoints rotation ## Description Small, inexpensive AI pendant. Records sound after user presses a button. Indicate behavior with RGB LED. Onboard processing and cloud connectivity through mobile phone tethering. ## Project Details - **Owner:** dacre - **Created:** 12/18/2024 - **Last Updated:** 12/18/2024 - **Visibility:** Public - **Form Factor:** Wearables - **Operating Humidity:** 10 to 90% - **Antenna:** PCB Trace - **Operating Temperature Range:** -10°C to 70°C - **Wireless Protocol:** Wi-Fi, Bluetooth - **Life Cycle Expectancy:** 5 years - **Compliance:** RoHS, FCC, CE - **Operating Voltage:** 1.8V to 5V - **Connectivity:** USB, WiFi, Bluetooth - **Reliability:** 20,000 hrs - **Domain Application:** Consumer Electronics - **Human Interface:** RGB Led, microphone, push button ## Key Components ### LED1 — [WS2812B-B](https://www.flux.ai/vasyl/ws2812b-b.md) - Part Type: LED - Datasheet URL: https://datasheet.lcsc.com/lcsc/2006151006_Worldsemi-WS2812B-B_C114586.pdf - Manufacturer Part Number: WS2812B-B - Manufacturer Name: Worldsemi **Pins:** - DIN [pin 4] - DOUT [pin 2] - VDD [pin 1] - VSS [pin 3] ### MK1 — [SPH0645LM4H-B](https://www.flux.ai/vasy_skral/sph0645lm4h-b.md) - Part Type: Sensor - Symbol Style: Parametric - Manufacturer Name: Knowles - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Knowles%20Acoustics%20PDFs/SPH0645LM4H-B.pdf - Manufacturer Part Number: SPH0645LM4H-B - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - BCLK [pin 4] - DATA_OUT [pin 6] - GND [pin 3] - SELECT [pin 2] - VDD [pin 5] - WS [pin 1] ### MK2 — SPH0645LM4H-B - Manufacturer Name: Knowles - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Knowles%20Acoustics%20PDFs/SPH0645LM4H-B.pdf - Manufacturer Part Number: SPH0645LM4H-B - Part Type: Sensor **Pins:** - BCLK [pin 4] - DATA_OUT [pin 6] - GND [pin 3] - SELECT [pin 2] - VDD [pin 5] - WS [pin 1] ### U1 — [ESP32-S2-MINI-1U](https://www.flux.ai/vasy_skral/esp32-s2-mini-1u.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Integrated Circuit - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32-s2-mini-1_esp32-s2-mini-1u_datasheet_en.pdf - Manufacturer Part Number: ESP32-S2-MINI-1U-N4 - Manufacturer Name: Espressif Systems **Pins:** - <-GND [pin 30] - 3V3 [pin 3] - EN [pin 45] - GND [pin 59] - GND [pin 65] - GND [pin 64] - GND [pin 50] - GND [pin 61_6] - GND [pin 57] - GND [pin 58] - GND [pin 42] - GND [pin 60] - GND [pin 52] - GND [pin 43] - GND [pin 61_8] - GND [pin 63] - GND [pin 61_0] - GND [pin 55] - GND [pin 61_7] - GND [pin 51] - GND [pin 54] - GND [pin 49] - GND [pin 61_5] - GND [pin 2] - GND [pin 61_1] - GND [pin 56] - GND [pin 47] - GND [pin 62] - GND [pin 48] - GND [pin 53] - GND [pin 46] - GND [pin 1] - GND [pin 61_2] - GND [pin 61_3] - GND [pin 61_4] - IO0 [pin 4] - IO1 [pin 5] - IO10 [pin 14] - IO11 [pin 15] - IO12 [pin 16] - IO13 [pin 17] - IO14 [pin 18] - IO15 [pin 19] - IO16 [pin 20] - IO17 [pin 21] - IO18 [pin 22] - IO19 [pin 23] - IO2 [pin 6] - IO20 [pin 24] - IO21 [pin 25] - IO26 [pin 26] - IO3 [pin 7] - IO33 [pin 28] - IO34 [pin 29] - IO35 [pin 31] - IO36 [pin 32] - IO37 [pin 33] - IO38 [pin 34] - IO39 [pin 35] - IO4 [pin 8] - IO40 [pin 36] - IO41 [pin 37] - IO42 [pin 38] - IO45 [pin 41] - IO46 [pin 44] - IO5 [pin 9] - IO6 [pin 10] - IO7 [pin 11] - IO8 [pin 12] - IO9 [pin 13] - NC [pin 27] - RXD0 [pin 40] - TXD0 [pin 39] ### U2 — [BQ24075RGTT](https://www.flux.ai/jecstronic/bq24075rgtt.md) - Manufacturer Name: Texas Instruments - Manufacturer Part Number: BQ24075RGTT - Datasheet URL: https://www.ti.com/lit/ds/symlink/bq24075.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Power Management **Pins:** - ~CE [pin 4] - ~CHG [pin 9] - ~PGOOD [pin 7] - BAT_1 [pin 2] - BAT_2 [pin 3] - EN1 [pin 6] - EN2 [pin 5] - ILIM [pin 12] - IN [pin 13] - ISET [pin 16] - OUT_1 [pin 10] - OUT_2 [pin 11] - SYSOFF [pin 15] - TMR [pin 14] - TS [pin 1] - VSS [pin 8] - VSS_THERMAL_PAD [pin 17] ### U3 — [W25Q128JVSIQ](https://www.flux.ai/jecstronic/w25q128jvsiq.md) - Datasheet URL: https://www.winbond.com/resource-files/W25Q128JV%20RevI%2008232021%20Plus.pdf - Manufacturer Name: Winbond Electronics - Part Type: Integrated Circuit - Manufacturer Part Number: W25Q128JVSIQ **Pins:** - ~CS [pin 1] - CLK [pin 6] - DI(IO0) [pin 5] - DO(IO1) [pin 2] - GND [pin 4] - IO2 [pin 3] - IO3 [pin 7] - VCC [pin 8] ### U4 — [MT25QU01GBBB8ESF-0SIT](https://www.flux.ai/jecstronic/mt25qu01gbbb8esf-0sit.md) - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/2293/MT25QU01GBBB_DS.pdf - Manufacturer Name: Micron Technology Inc. - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Integrated Circuit - Manufacturer Part Number: MT25QU01GBBB8ESF-0SIT **Pins:** - C [pin 16] - DNU_1 [pin 4] - DNU_2 [pin 5] - DNU_3 [pin 6] - DNU_4 [pin 11] - DNU_5 [pin 12] - DNU_6 [pin 13] - DNU_7 [pin 14] - DQ0 [pin 15] - DQ1 [pin 8] - DQ3/HOLD# [pin 1] - RESET# [pin 3] - S# [pin 7] - V_SS [pin 10] - VCC [pin 2] - W#/DQ2 [pin 9] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/dacre/flux-3308-routing-touchpoints-rotation](https://www.flux.ai/dacre/flux-3308-routing-touchpoints-rotation).* --- *Generated from [https://www.flux.ai/dacre/flux-3308-routing-touchpoints-rotation](https://www.flux.ai/dacre/flux-3308-routing-touchpoints-rotation)*