# Still Coffee P.K.E. Meter ## Description Welcome to your new project. Imagine what you can build here. ## Project Details - **Owner:** petros1 - **Created:** 5/27/2025 - **Last Updated:** 5/27/2025 - **Visibility:** Public ## Key Components ### — [BQ29723DSER](https://www.flux.ai/cam16/3e5578cc-65b6-4153-b128-8a2ec644e0cb.md) - Manufacturer Name: Texas Instruments **Pins:** - BAT [pin 5] - COUT [pin 2] - DOUT [pin 3] - NC [pin 1] - V- [pin 6] - VSS [pin 4] ### 5V — [Pin Header 01x10 2.54mm Vertical](https://www.flux.ai/vasy_skral/pin-header-01x10-254mm-vertical.md) - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_10 [pin 10] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] - Pin_7 [pin 7] - Pin_8 [pin 8] - Pin_9 [pin 9] ### BMP280 — [AHT20+BMP280 Module](https://www.flux.ai/vasyl/aht20plusbmp280-module.md) - Part Type: Module - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://files.seeedstudio.com/wiki/Grove-AHT20_I2C_Industrial_Grade_Temperature_and_Humidity_Sensor/AHT20-datasheet-2020-4-16.pdf **Pins:** - GND [pin 2] - SCL [pin 1] - SDA [pin 3] - VDD [pin 4] ### ESP32 S3 — [DFR0478](https://www.flux.ai/jecstronic/dfr0478.md) - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/2268/DFR0478_Web.pdf - Part Type: Evaluation Board - Manufacturer Name: DFRobot - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: DFR0478 **Pins:** - 3V3 [pin 17] - A0/IO36 [pin 19] - A1/IO39 [pin 20] - A2/IO34 [pin 21] - A3/IO35 [pin 22] - A4/IO15 [pin 23] - AREF [pin 16] - BCLK/IO14 [pin 31] - DI/IO16 [pin 34] - DO/IO4 [pin 33] - GND [pin 15] - IO0 [pin 25] - IO1/TXD [pin 2] - IO10/D6 [pin 7] - IO11/CMD [pin 14] - IO13/D7 [pin 8] - IO2/D9 [pin 10] - IO25/D2 [pin 3] - IO26/D3 [pin 4] - IO27/D4 [pin 5] - IO3/RXD [pin 1] - IO5/D8 [pin 9] - IO6/CLK [pin 11] - IO7/SD0 [pin 12] - IO8/SD1 [pin 13] - IO9/D5 [pin 6] - LRCK/IO17 [pin 35] - MCLK/IO12 [pin 32] - MH1 [pin MH1] - MH2 [pin MH2] - MH3 [pin MH3] - MH4 [pin MH4] - MISO/IO19 [pin 28] - MOSI/IO23 [pin 27] - NC [pin 24] - RST [pin 36] - SCK/IO18 [pin 26] - SCL/IO22 [pin 30] - SDA/IO21 [pin 29] - VCC [pin 18] ### Fuel Gauge — [LC709203FQH-01TWG](https://www.flux.ai/kicad-part-library/lc709203fqh-01twg.md) - Package or Case Code: WDFN-8-1EP_4x3mm_P0.65mm_EP2.4x1.8mm - Datasheet URL: https://www.onsemi.com/download/data-sheet/pdf/lc709203f-d.pdf - Manufacturer Part Number: LC709203FQH-01TWG **Pins:** - ~{ALARMB} [pin 4] - EP [pin 9] - SCL [pin 8] - SDA [pin 7] - T_{SENSE} [pin 6] - T_{SW} [pin 5] - TEST [pin 1] - V_{DD} [pin 3] - V_{SS} [pin 2] ### Geiger — [BQ24075RGTT](https://www.flux.ai/jecstronic/bq24075rgtt.md) - Manufacturer Part Number: BQ24075RGTT - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.ti.com/lit/ds/symlink/bq24075.pdf - Manufacturer Name: Texas Instruments - 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] ### GND — [Pin Header 01x10 2.54mm Vertical](https://www.flux.ai/vasy_skral/pin-header-01x10-254mm-vertical.md) - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_10 [pin 10] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] - Pin_7 [pin 7] - Pin_8 [pin 8] - Pin_9 [pin 9] ### GNSS — [TESEO-LIV3F](https://www.flux.ai/mvniekerk/teseo-liv3f.md) - Max Input Voltage: 4.2V - Package or Case Code: 18-LCC - Manufacturer Part Number: TESEO-LIV3F - Datasheet URL: https://www.st.com/resource/en/datasheet/teseo-liv3f.pdf - Manufacturer Name: STMicroelectronics - Part Type: Integrated Circuit - Voltage: 2.3V **Pins:** - 1PPS [pin 4] - ANT_OFF [pin 13] - GND [pin 1] - GND_RF_1 [pin 10] - GND_RF_2 [pin 12] - RESERVED_1 [pin 15] - RESERVED_2 [pin 18] - RF_IN [pin 11] - RX [pin 3] - SCL [pin 17] - SDA [pin 16] - SYS_RSTN [pin 9] - TX [pin 2] - VBATT [pin 6] - VCC [pin 8] - VCC_IO [pin 7] - VCC_RF [pin 14] - WAKE-UP [pin 5] ### I2C hub — [TCA9544A](https://www.flux.ai/kicad-part-library/tca9544a.md) - Package or Case Code: TSSOP-20_4.4x6.5mm_P0.65mm - Manufacturer Name: Texas Instruments Inc. - Manufacturer Part Number: TCA9544A - Datasheet URL: http://www.ti.com/lit/ds/symlink/tca9544a.pdf **Pins:** - ~{INT} [pin 17] - ~{INT0} [pin 4] - ~{INT1} [pin 7] - ~{INT2} [pin 11] - ~{INT3} [pin 14] - A0 [pin 1] - A1 [pin 2] - A2 [pin 3] - GND [pin 10] - SC0 [pin 6] - SC1 [pin 9] - SC2 [pin 13] - SC3 [pin 16] - SCL [pin 18] - SD0 [pin 5] - SD1 [pin 8] - SD2 [pin 12] - SD3 [pin 15] - SDA [pin 19] - VCC [pin 20] ### J1 — [XY301V-A-5.0-2P](https://www.flux.ai/jharwinbarrozo/xy301v-a-50-2p.md) - Manufacturer Name: Ningbo Xinlaiya Elec. - Manufacturer Part Number: XY301V-A-5.0-2P **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] ### J2 — [XY301V-A-5.0-2P](https://www.flux.ai/jharwinbarrozo/xy301v-a-50-2p.md) - Manufacturer Part Number: XY301V-A-5.0-2P - Manufacturer Name: Ningbo Xinlaiya Elec. **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] ### Q1 — [TIC106](https://www.flux.ai/kicad-part-library/tic106.md) - Datasheet URL: http://pdf.datasheetcatalog.com/datasheet/PowerInnovations/mXyzrtvs.pdf - Manufacturer Part Number: TIC106 - Package or Case Code: TO-220-3_Vertical - Manufacturer Name: Texas Instruments Inc. **Pins:** - A [pin 2] - G [pin 3] - K [pin 1] ### SD card reader — [CR2013-MI2120](https://www.flux.ai/kicad-part-library/cr2013-mi2120.md) - Manufacturer Part Number: CR2013-MI2120 - Part Type: Display - Datasheet URL: http://pan.baidu.com/s/11Y990 - Package or Case Code: CR2013-MI2120 **Pins:** - ~{CS} [pin 3] - D/~{C} [pin 5] - FLASH_CD [pin 14] - GND [pin 2] - LED [pin 8] - MISO [pin 9] - MOSI [pin 6] - RESET [pin 4] - SCK [pin 7] - SD_CS [pin 10] - SD_MISO [pin 12] - SD_MOSI [pin 11] - SD_SCK [pin 13] - VCC [pin 1] ### Sound Sensor — [BOB-12758](https://www.flux.ai/adrian95/bob-12758.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: http://cdn.sparkfun.com/datasheets/Sensors/Sound/CEM-C9745JAD462P2.54R.pdf - Part Type: Module - Manufacturer Part Number: BOB-12758 - Manufacturer Name: SparkFun Electronics **Pins:** - AUD [pin 3] - GND [pin 2] - VCC [pin 1] ### SW1 — [EG1218](https://www.flux.ai/adrian95/eg1218.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://sten-eswitch-13110800-production.s3.amazonaws.com/system/asset/product_line/data_sheet/119/EG.pdf - Part Type: Switch - Manufacturer Part Number: EG1218 - Manufacturer Name: E-Switch **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### TP4056X — [TP4056_Module](https://www.flux.ai/wolfxpac/tp4056module.md) - Manufacturer Name: Generic - Datasheet URL: https://robocraze.com/products/tp4056-lithium-battery-charging-board - Part Type: Module - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - BAT- [pin 5] - BAT+ [pin 6] - IN- [pin 1] - IN+ [pin 2] - OUT- [pin 3] - OUT+ [pin 4] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/petros1/still-coffee-ppkpep-meter](https://www.flux.ai/petros1/still-coffee-ppkpep-meter).* --- *Generated from [https://www.flux.ai/petros1/still-coffee-ppkpep-meter](https://www.flux.ai/petros1/still-coffee-ppkpep-meter)*