# Resulting Jade Electromagnetic Shrinking Machine ## Description ESP32-C3FH4 Smart Coffee Scale with Advanced Connectivity and Power Management ## Project Details - **Owner:** ryanf - **Created:** 10/15/2025 - **Last Updated:** 10/15/2025 - **Visibility:** Public - **Role:** Impedance Matching - **Power Requirements:** USB - **Operating Voltage:** 3.3V - **Manufacturer Name:** Espressif - **Role:** RF Tuning / Matching - **Operating Voltage:** 12V - **Domain:** Consumer Electronics - **Role:** Power Conversion - **Role:** Sensing (Shunt) - **Software:** Arduino - **Connectivity:** WiFi - **Operating Voltage:** 5V - **Connectivity:** Bluetooth - **Forks:** 1 ## Key Components ### ANT1 — [2450AT18B100E](https://www.flux.ai/lcsc/2450at18b100e~hwl1.md) - Role: Antenna - Package or Case Code: ANT-SMD_L3.2-W1.6 - Part Type: Pre-ordered Products - JLCPCB Part Class: Extended Part - Manufacturer Name: JOHANSON(约翰逊) - LCSC Part Number: C2917717 - Manufacturer Part Number: 2450AT18B100E - Role Details: 2.4 GHz chip antenna — place at board edge, reserve RF keep-out, add matching network **Pins:** - 1 [pin 1] - 2 [pin 2] ### J1 — MSD-4-A - Datasheet URL: https://www.cuidevices.com/product/resource/msd-4-a.pdf - Role Details: microSD card connector for SPI interface - Manufacturer Part Number: MSD-4-A - Manufacturer Name: CUI Devices - Role: Connector - Part Type: Connector **Pins:** - CD [pin CD1] - CD/DAT3 [pin 2] - CLX [pin 5] - CMD [pin 3] - DAT0 [pin 7] - DAT1 [pin 8] - DAT2 [pin 1] - G1 [pin G1] - G2 [pin G2] - G3 [pin G3] - G4 [pin G4] - VDD [pin 4] - VSS [pin 6] ### J2 — [694101308002](https://www.flux.ai/jecstronic/694101308002~8fo.md) - Datasheet URL: https://www.we-online.com/katalog/datasheet/694101308002.pdf - Part Type: Connector - Manufacturer Name: Würth Elektronik - Role: Power Connector - Role Details: USB‑C / power entry (12V) receptacle - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 694101308002 **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### U1 — [ESP32-C3FH4](https://www.flux.ai/lcsc/esp32-c3fh4~6nyv.md) - JLCPCB Part Class: Extended Part - LCSC Part Number: C2858491 - Operating Voltage: 3.0V–3.6V - Part Type: RF Transceiver ICs - Operating Temperature: -40°C to +85°C - Package or Case Code: QFN-32_L5.0-W5.0-P0.50-TL-EP3.7 - Role Details: Wi‑Fi/BLE MCU; provide UART programming pads, EN pull-up/RC network, and power pins - Manufacturer Name: ESPRESSIF(乐鑫) - Frequency: 160MHz - Role: Main MCU - Manufacturer Part Number: ESP32-C3FH4 **Pins:** - CHIP_EN [pin 7] - EP [pin 33] - GPIO10 [pin 16] - GPIO18 [pin 25] - GPIO19 [pin 26] - GPIO2 [pin 6] - GPIO3 [pin 8] - GPIO8 [pin 14] - GPIO9 [pin 15] - LNA_IN [pin 1] - MTCK [pin 12] - MTDI [pin 10] - MTDO [pin 13] - MTMS [pin 9] - SPICLK [pin 22] - SPICS0 [pin 21] - SPID [pin 23] - SPIHD [pin 19] - SPIQ [pin 24] - SPIWP [pin 20] - U0RXD [pin 27] - U0TXD [pin 28] - VDD_SPI [pin 18] - VDD3P3 [pin 2] - VDD3P3 [pin 3] - VDD3P3_CPU [pin 17] - VDD3P3_RTC [pin 11] - VDDA [pin 31] - VDDA [pin 32] - XTAL_32K_N [pin 5] - XTAL_32K_P [pin 4] - XTAL_N [pin 29] - XTAL_P [pin 30] ### U2 — [NAU7802SGI](https://www.flux.ai/lcsc/nau7802sgi~xwtu.md) - JLCPCB Part Class: Extended Part - Manufacturer Name: NUVOTON(新唐) - Role: ADC - Package or Case Code: SOP-16_L9.9-W3.9-P1.27-LS6.0-BL - Role Details: 24-bit load-cell ADC; I2C interface and differential inputs for load cell - Part Type: Analog To Digital Converters (ADCs) - Manufacturer Part Number: NAU7802SGI - LCSC Part Number: C2614351 **Pins:** - AVDD/LDO [pin 16] - AVSS [pin 8] - DRDY [pin 12] - DVDD [pin 15] - DVSS [pin 9] - REFN [pin 7] - REFP [pin 1] - SCLK [pin 13] - SDIO [pin 14] - VBG [pin 6] - VIN1N [pin 2] - VIN1P [pin 3] - VIN2N [pin 4] - VIN2P [pin 5] - XIN [pin 10] - XOUT [pin 11] ### U4 — [NCP176BMX330TCG](https://www.flux.ai/ryanf/ncp176bmx330tcg~l72.md) - Manufacturer Part Number: NCP176BMX330TCG - Package or Case Code: XDFN6 - Role Details: 5V-to-3.3V LDO for MCU and peripherals; include datasheet-specified CIN/COUT - Part Type: Linear Voltage Regulator - Manufacturer Name: onsemi - Datasheet URL: https://www.mouser.com/datasheet/2/308/1/NCP176_D-2316728.pdf - Role: LDO **Pins:** - EN [pin 4] - FB [pin 2] - GND [pin 3] - IN [pin 6] - N/C [pin 5] - OUT [pin 1] ### Y1 — RH100-40.000-18-F-2030-EXT-TR-NS1 - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/6146/RH100-40.000-18-F-2030-EXT-TR-NS1.pdf - Part Type: Oscillator - Manufacturer Name: Raltron Electronics - Frequency: 40MHz - Role: Timing - Manufacturer Part Number: RH100-40.000-18-F-2030-EXT-TR-NS1 - Role Details: Clock source for ESP32-C3FH4 MCU **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/ryanf/resulting-jade-electromagnetic-shrinking-machine~y7i](https://www.flux.ai/ryanf/resulting-jade-electromagnetic-shrinking-machine~y7i).* --- *Generated from [https://www.flux.ai/ryanf/resulting-jade-electromagnetic-shrinking-machine~y7i](https://www.flux.ai/ryanf/resulting-jade-electromagnetic-shrinking-machine~y7i)*