Wearable haptic glove main PCB with ESP32-S3 control, DRV2605L LRA haptic driver, modular TCS34725 ring-sensor connector, fingertip LRA connector, USB-C/LiPo power, and native USB programming.

DeskNeuron V0.1 — USB-C ESP32-S3 6-key macro pad with dual EC11 encoders and SPI TFT header.

4-layer ESP32-S3 controller for a dual V-mount battery-powered film fog generator with 200 W heater PWM, pump/fan outputs, K-type thermocouple sensing, battery monitoring, and DMX-512 control.

4-layer ESP32-S3 controller for a dual V-mount battery-powered film fog generator with 200 W heater PWM, pump/fan outputs, K-type thermocouple sensing, battery monitoring, and DMX-512 control.

Industrial ESP32-S3 master gateway with Ethernet (W5500), LoRa 433 MHz, microSD storage, RTC, USB-UART console/debug interface (CP2102N), and isolated RS485 ports using ADM2587 transceivers. The design includes ESP32-S3-WROOM-1-N16R2 as the main controller, W5500 Ethernet, LoRa antenna interface, microSD connector, RTC circuitry, CP2102N USB-to-UART programming/debug console, SC16IS752 UART expanders, isolated RS485 channels, power regulation, ESD/surge protection, connectors, and mounting holes. Cellular/BG95/SIM functionality and true RS232 console hardware are not included; J1 is used only as the microSD card connector.

USB-C powered ESP32-S3 Wi-Fi voice assistant hub with MEMS microphone, I2S class-D speaker output, protected USB, and manufacturing-focused PCB.

Multi-subsystem ESP32-S3 coffee maker/alarm controller board for a Coffee Waker appliance. The design uses an ESP32-S3-WROOM-1-N8R8 module as the main Wi-Fi/Bluetooth MCU, with USB-C 2.0 device connectivity through a USB4105-GF-A connector, 5.1 kΩ CC pull-downs, and USBLC6-2SC6 ESD protection on the USB D+/D− pair. Power architecture includes a 12 V input on a JST VH B4P connector, a TPS62932 buck regulator generating the 5 V rail, a TLV1117LV33 3.3 V LDO for MCU/logic power, and TPS22919 load switches for controlled 3.3 V/5 V peripheral rails. Functional blocks include an NAU7802 load-cell ADC on I2C with two differential load-cell channels, a MAX98357A I2S audio amplifier/DAC with speaker/output filtering, a microSD socket on SDIO, I2C/test headers, UART/programming header, and auxiliary JST VH connectors for wake-light or external loads. The high-voltage section includes 120 VAC input/output screw terminals, a 5 V SPST-NO relay rated 15 A / 240 VAC max, a 1 A fuse, MOV surge suppression, diode snubber, and a dedicated heater output terminal.

Custom base PCB for a Blue AI figurine with ESP32-S3 Wi‑Fi/BLE, I2S microphone and speaker audio, LiPo battery charging, eye LEDs, and expansion wiring into the figure.

Single-board ESP32-S3 desktop robot cat companion with ST7789 display, touch pads, IMU, MicroSD, and USB-C Li-Po charging.

Portable ESP32-S3 smart hardware companion with USB Audio microphone, display, alerts, and LiPo power

48V tether-powered Ethernet-to-WiFi bridge using Blue Robotics Fathom-X style tether interface and ESP32-S3 WiFi output, with isolated/buck DC/DC rails for the tether interface and ESP32.

Smart relay based on ESP32-S3 with CAN bus module extension capability

Multi-processor AI development board with STM32MP157-class MPU, RP2350/RP2040 companion MCU, ESP32-S3 WiFi/BT, DDR3L, storage, Ethernet, display/camera/audio, USB-C PD/DC power, and 100 mm x 72 mm 4-layer PCB target.

Autonomous 12 V solar/battery powered 5-zone balcony irrigation ESP32-S3 carrier/control board

Production-prototype ESP32-S3 control/RF/GNSS/sensor board for an outdoor livestock collar. Includes LoRa 915 MHz, GNSS, I2C/I2S sensors, local actuator drivers, battery-cell solder pads, solar pass-through, soldered flex-tail zones, HV electrode isolation, test points, and a 120 mm x 80 mm 4-layer FR4 target stackup.

ESP32-S3 + C6 controller. 4× thermocouple, 2× SSR, CAN, ▎ 3.5" QSPI display (FRU mezzanine), tire SELV loop. ▎ 4-layer, 130×90mm. SmarTemp+ standard.

Compact ESP32-S3 wearable environmental monitor with BME688 sensing, LiPo charging, MAX17043 fuel gauge, USB-C power, and JLCPCB-ready 4-layer layout constraints.

70x50 mm CNC-friendly raw-laminate XIAO ESP32S3 lapel audio recorder prototype with socketed XIAO, dual external INMP441 microphones, LiPo connector, button/status LED, and SD-card recording support. Layout prioritizes hand soldering, replaceable parts, wide traces, and generous isolation clearances over compactness.

ESP32-S3 based controller for a DMX-controlled motorized pan/tilt mirror head with Dynamixel servo control and GPS solar tracking. This step establishes the MCU, USB-C flashing/debug interface, reset/boot circuitry, and status LED on a 3V3 rail.

ESP32-S3 based 6x8 flip-dot matrix controller using DRV8833 H-bridges, USB-C 5V input, AP2112K 3.3V logic rail, and a 48-coil row/column inductor matrix.

Automated NiCad battery tester for calibration lab. Tests all 12 cells of a meter's battery pack in situ (no disconnect) under a 150 ▎ Ω / 15-min timed load. Per-cell measurement via 13 pogo contacts (7 rail + 6 V-gap junctions) into 4× ADS1115 over I²C. ESP32-S3 controls a logic-level MOSFET for load ▎ switching. Wirelessly prints PCL5 reports to an HP printer and ZPL labels to a Zebra. Production target: 10–12 units. Bench rig already validated; this is the production PCB.

WalkInPeace belt-clip wearable PCB for 8-channel EMG, IMU, ESP32-S3 classification, haptic/audio alerts, BLE/WiFi notifications, and rechargeable LiPo power management.

Vibe-hardwared ESP32-S3 e-ink handheld project created with no prior technical knowledge on May 12, 2026, in about 30 minutes of real time.

Smart weighing + vision recognition controller using a Seeed XIAO ESP32-S3, Grove Vision AI V2 connected only by 3V3/GND/SDA/SCL, and a simple four-pin ESP32-S3 expansion interface for D2/GPIO3 and D3/GPIO4; no onboard HX711 or load-cell connector.

Beginner-friendly button-triggered speaker sound playback PCB with USB loading/debug, microSD storage, ESP32-S3 controller, and I2S speaker amplifier.