Samples
Devices we've designed. Most free to download.
Devices from our design pipeline, and the ones we've built and run. Each page says which. Most models are free to download and free to print — license per sample is on each detail page.
Custom PCB
HC-01 Humidor Controller
A desktop cigar humidor controller, built end to end: a custom ESP32 circuit board, ESP-IDF firmware, and a laser-cut Baltic birch case with printed internals. An SHT40 sensor reads the humidor air, a round display shows humidity and setpoint, and a fan pushes air across a gel-bead drawer when it runs dry.
Smart Home
ReAir Smart Vent
A 2022 prototype: a Wi-Fi-controlled ceiling vent with three independently-driven blades, Qi wireless charging, and an 18650 battery.
Autonomous Robot
Everyspot Garden Rover
A 4-wheel-drive garden patrol rover that finds its way with stereo vision, GPS and an IMU, and waters wherever its camera is aimed. A Raspberry Pi 5 runs an OAK-D Lite depth camera on a pan/tilt gimbal that also carries a solenoid sprinkler. Runs off a 4S 18650 pack on a coherent four-rail power system.
Robot
4-DOF Desktop Robot Arm
A 4-DOF desktop pick-and-place arm on the EEZYbotARM Mk2 four-bar topology — yaw, shoulder, elbow and a geared gripper. ESP32-S3 + PCA9685 driving three MG996R servos and an SG90 gripper, on a 4S 18650 pack. Board-level parts from vendor CAD; servos and power parts built from datasheets.
Smart Home
Solar Drip Irrigation Controller
An off-grid, solar-powered drip-irrigation controller that sits on a bucket of water and doses a garden through a printed 10-outlet manifold. A 5 V peristaltic pump does the dosing, solar + 18650 battery run it unattended, and an ESP32-S3 schedules watering and senses temperature, humidity and light.
Smart Home
Hydroponic Plant Pot
A countertop passive-Kratky hydroponic pot: a plant grows in a net cup with its roots in a nutrient reservoir, and an ESP32-S3 watches pH, EC and light. It runs a WS2812 grow strip off USB-C, with no battery and no air pump. A clear window shows the water level.
Smart Home
Self-Watering Smart Plant Pot
A USB-C self-watering soil pot that waters the plant when its capacitive moisture probe reads dry. A light sensor sits beside the probe; an ESP32-S3 in a separate desk-side enclosure doses water from a 1.02 L lift-out reservoir through a 5 V peristaltic pump. USB-C in, 5 V throughout — no battery, no BMS, no buck.
Autonomous Robot
Robot Car
A tabletop-scale autonomous rover built in two rounds: three wheels and a Raspberry Pi camera, then four wheels and a Coral Edge TPU running vision on board.