Hello everyone ,
i was a rpi user and now jumped into arduino .
I am doing a small project that measures bpm and spo2 with max30102.
i ve followed all the instructions -5V = 5V (3.3V is allowed)
-GND = GND
-SDA = A4 (or SDA)
-SCL = A5 (or SCL)
-INT = Not connected
vin = to 5v
i ve downloaded all the libs and the sensor just doesnt work , no leds at all and none of the examples work .
I power my nano via usb .
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could you give details of the actual sensor board you are using?
have you pullup resistors on SDA and SCL? 4.7kohm usually works OK
how long are the leads to the max30102?
try swopping in the SDA and SCL over just in case you have them the wrong way around
do you have an oscilloscope to look at the signals?
horace:
could you give details of the actual sensor board you are using?
have you pullup resistors on SDA and SCL? 4.7kohm usually works OK
how long are the leads to the max30102?
try swopping in the SDA and SCL over just in case you have them the wrong way around
do you have an oscilloscope to look at the signals?
Weird , it seems my breadboard doesnt have power at all, arduino nano examples like blink work perfect but when i tried temperature sensor from sparkfun as well its the same thing with Max 30102 .
Nothing works even if i downloaded libs and examples
horace:
do you have a multimeter to check the voltage supply to the Max 30102?
No sadly i dont have , i am really new to this , maybe starting with nano was wrong .
What are my options ?
Buy uno ? any chance of my sensors to work with nano iot33?
I forgot to mention the only thing i have on breadboard except the sensor is my nano iot33 powered with USb , i dont have any other jumper wires on it (only the ones i use to power up my max30102)
.
Its a uni project with deadline
the link u posted was very helpful .
5v is not enabled by default and it says i need to solder the vusb to power 5v .
The problem is i cant find anywhere how to do that , so i guess i need to buy an arduino uno board with wifi
Yea i saw it , but solder it with what ? a cable ? or just put the soldering machine on these 2 small pins for few seconds ?
Sorry if i sound stupid i just really dont know
Ok soldered it and it gives power .
The temp102 sensor i used works like a charm now , but the max doesnt .
Could it be power insufficient ? multimeter showed good numbers , maybe a burnt max30102 sensor??
thn xalot in advance.