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OM23221ARD: NTAG I2C plus kit with FRDM-KW41Z

Question asked by Steve Smythe on Jan 30, 2019
Latest reply on Feb 8, 2019 by Estephania Martinez

I am using the OM23221ARD: NTAG I2C plus kit with a FRDM-KW41Z board. According to the pinout, the NFC energy-harvesting output VOUT is routed to the P5-9VIN pin on the KW41Z Arduino header. As the output voltage from the NFC energy harvesting pin on the I2C antenna is likely to be in the region of 2.7v, that would seem to be insufficient to power the KW41Z via the P5-9VIN pin. Am I right, or is there a way of powering the KW41Z via the I2C plus shield?

 

I know that I AM able to power the KW41Z board from the I2C antenna if I connect VOUT to J18 and set J23 accordingly but that requires an extra wire from the I2C board.

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