An electronics shopfor IoT builders.
Sensors, microcontrollers, radios, and the connector you needed yesterday. The same catalog OpenSensor uses to build its own products — opened up to anyone who'd rather buy than wait three weeks for a marketplace order.
Shop by what you're building.
GrowMax
Complete grow-automation boards and kits. Per-plant moisture, scheduled watering, MicroPython firmware.
Sensors
Temperature, humidity, soil moisture, light, and environmental sensors for embedded projects.
Controllers
Microcontrollers, development boards, automation hubs — Raspberry Pi Pico, ESP32-S3, and friends.
Connectivity
Wi-Fi, Bluetooth, LoRa, and other radio modules for getting data off the bench.
Power & Cables
Cable assemblies, connectors, and power components — the boring parts that always run out first.
Bare PCBs
Bare boards and panels for builders who want to populate their own components.
Why buy from this catalog.
Hand-picked components
Parts vetted on the bench before they make it to the catalog. We sell what we ship in our own kits.
Real shipping windows
Orders processed within one business day. No drop-shipping, no surprise overseas wait times.
Direct support
Stuck on a project that uses something you bought here? Email matt@opensensor.io and a real engineer answers.
Pick up the parts you need.
Standard Stripe checkout. USPS shipping. We'll be the ones packing your box.