Hello I am trying to Using Arduino Mini 4 some environmental Moniotring. TMP102, HIH 4030 and and micro SD card to record data. Can I use a 9V DC source as Power supply to Arduino MINI 4? Is there a 5V ouput from Arduino Mini 4 like UNO? Can I use TMP102, HIH4030 and Micro SD card interfaced to …

Environmetal Monitoring

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