HardLabs

1 open source board using the PCA9539

Real designs built with the PCA9539, from public GitHub projects: a quick way to see how others power, decouple and connect it. Each board comes with its KiCad files, full parts list and a render — and you can simulate its firmware on HardLabs.

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AMS1117-3.3 43USBLC6-2SC6 30TL074 28RP2040 23TL072 22W25Q128JVSIQ 22AP2112K-3.3 19USBLC6-2P6 16BME280 14XC6206P332MR 1374HC4051 12SN65HVD230 12LM358 11SRV05-4 11NCP1117LPST33T3G 10EL817 9ESP32-S3-WROOM-1 9ISO7341c 9MCP6002-XSN 9RP2354B 9AMS1117-5.0 8LM1117-3.3 7LM7805_TO220 7MAX3232 7