SKU_SEN2030 inconsistent data

Im currently using a DFRobot- SKU_SEN2030. It has a DIGITAL mode that computes the received data automatically but it is not that accurate. Maybe it is because im only supplying 3.3v to it? The recommended supply is 5v. Also, is there a code or way to compute manually the analog data from it? I'm thinking of going that way if I fail to fix it.
2020-01-05 03:10:16 I am struggling to get the BPM to give consistent data, what code would you add to this code to display BPM on the Serial Monitor
Thanks, Johnny
jonathon.adlington
Thanks, Johnny

2019-11-15 05:57:45 Hi, Sorry i mustve mistyped.
This is the one im talking about https://wiki.dfrobot.com/Heart_Rate_Sensor_SKU__SEN0203
cyrlhrts
This is the one im talking about https://wiki.dfrobot.com/Heart_Rate_Sensor_SKU__SEN0203
