Arduino MAX30100 Heart Rate Sensor

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I followed exactly the same editing as you, but at the LCD screen I get no reaction ... the lcd does not react with the sensor. please help me

marsutakou
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Serial monitor work well, but lcd lib not working, please help, and liquid Cristal lib send link

bishnupadahalder
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por favor seria mucho pedir si me ayudases? quiero conectar mi nodemcu al max30100 y llevare por lo menos 5 chips comprados ya y estoy desesperado no soy capaz de conectarlo necesito ayuda...

totekingpadi
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please, what is the value of an external power supply? 9V or 12V?

marsutakou