Dretful pcf8591 Q2W board addon

Design by: Dretful

Just a piggyback board so that you can plug in 4 HL-01 humidity sensors to a q2W ADC board. Fix your LONG male header to the bottom side, and the female headers for the sensors to the top. Fits the Q2W perfectly. Like https://www.ebay.co.uk/itm/Soil-Hygrometer-Humidity-Detection-Module-Effective-for-Arduino-Moisture-Sensor/163860515101?hash=item2626d9091d:g:Pr0AAOSwSYtde4Vx

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5.0 cm x 5.0 cm