6 layers25.4 × 43.2 mm

IoT 2021A
cmcmicrosystems/iot_platform
Compact Bluetooth Low Energy (BLE) sensor node PCB design, firmware and Android app
41 parts5
Boards in 3 GitHub repositories, designed in KiCad, that use the OPT3002DNPT by Texas Instruments (-40℃~+85℃ 0.65mm 1.6V~3.6V 1.8uA 23bit 2mm 2mm I2C Light Intensity Low power/sleep mode、Interrupt/event trigger、Built-in temperature compensation、Automatic gain control USON-6(2x2) Ambient Light Sensors ROHS). See how each wires it, with its parts, size, README and files; the OPT3002DNPT’s symbol, footprint and pinout are on its own page.

cmcmicrosystems/iot_platform
Compact Bluetooth Low Energy (BLE) sensor node PCB design, firmware and Android app

Binomica-Labs/Hardware
Open source tools for scientific inquiry and exploration!
