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Custom ESP32 IoT PCB Design

Freelancer

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placeCH home_workリモート assignment契約社員 public集約求人 · CH

event2026年9月20日に公開 · verified2026年9月20日時点で募集中であることを確認済みです

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US$ 30 – US$ 250 /案件

求人について

I'm looking for a PCB designer to create a KiCad PCB for a custom ESP32-based IoT device. The device will need to connect via Wi-Fi and will be powered through a mains connection. Key Requirements: - KiCad PCB design - Integration of ESP32 with Wi-Fi connectivity - USB connection - I2S microphone INMP441 (on board, careful with the recording opening) - TFT screen (2.4-inch SPI TFT module with ILI9341, not onboard, connected by cable ) - I2S speaker NS4168 (on board, screw terminal for speakers) - 1 rotary encoder (not onboard, connections to solder) - 2 buttons (not onboard, connections to solder) - 1 status LED WS2812B - Mains power source design Pin map: | Device signal | ESP32-S2 GPIO | Notes | |---|---:|---| | TFT SCLK | GPIO7 | SPI clock | | TFT MOSI/SDA | GPIO11 | SPI data to TFT | | TFT MISO/SDO | GPIO9 | Optional for display reads/touch/SD | | TFT CS | GPIO10 | Display chip select | | TFT DC/RS | GPIO12 | Data/command | | TFT RESET | GPIO13 | Display reset | | TFT LED/BL | GPIO14 | Use a transistor if the TFT backlight current is high | | Encoder A | GPIO4 | `INPUT_PULLUP` | | Encoder B | GPIO5 | `INPUT_PULLUP` | | Encoder switch | GPIO6 | Switch to GND | | Record button | GPIO15 | Button to GND | | Play button | GPIO16 | Button to GND | | Status NeoPixel DIN | GPIO17 | Use a 330-470 ohm series resistor | | I2S BCLK | GPIO18 | Shared by mic and amplifier | | I2S LRCLK/WS | GPIO8 | Shared by mic and amplifier | | NS4168 DIN | GPIO21 | ESP32 I2S DOUT | | INMP441 SD | GPIO3 | ESP32 I2S DIN | Ideal Skills and Experience: - Proficiency in KiCad - Experience with ESP32 and IoT devices Looking for reliable work and adivce for a hobby project. My prototype works well but I need a PCB

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