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SKU:77160179
Specifications: Heart-Rate Monitor and Pulse Oximeter Sensor in LED Reflective Solution Tiny 5.6mm x 3.3mm x 1.55mm 14-Pin Optical Module Integrated Cover Glass for Optimal, Robust Ultra-Low Power Operation for Mobile Devices Programmable Sample Rate and LED Current for Power Savings Low-Power Heart-Rate Monitor (<1mW) Ultra-Low Shutdown Current (0.7?A, typ) Fast Data Output Capability High Sample Rates Robust Motion Artifact Resilience High SNR -40°C to +85°C Operating Temperature Range Applications Wearable Devices Heart-rate monitor Pulse oximeter Fitness Assistant Devices Note: The installation of electronic modules requires basic knowledge and requires a certain electronic professional foundation and hands-on ability. Please purchase carefully! Manual measurement, with small error. Please check size in detail before purchase. Real colors may slightly differ from the pictures, as it depends on specific monitor settings and light brightness. We highly appreciate all customers opinions to improve the selling, also if anything you unsatisfied, please contact us for probable best solution. Package Includes: 1Pcs
The MAX30102 is an integrated pulse oximetry and heart-rate monitor module.
It includes internal LEDs,photodetectors, optical elements, and low-noise electronics,with ambient light rejection.
The MAX30102 operates on a single 1.8V power supply,and a separate 5.0V power supply for the internal LEDs.
Communication is through a standard I 2 C-compatible interface.
The module can be shut down through software with zero standby current, allowing the power rails to remain powered at all times.For mobile and wearable devices.
The problem is that the MAX30102 runs on 1.8v and the person who designed the module connected the i2c pull up resistors to the 1.8v power. This may not work well on a circuit whose i2c bus is expecting 3.3v or higher like an Arduino. You can like I did, cut the trace between the pull up resistors and 1.8v and connect them to the 3.3V used to supply the leds on the module (see pic), or remove the 3 4.7k resistors and put your own pull up resistors in the circuit. The Max30102 seems to tolerate the 3.3V on the i2c bus well in my limited testing.I played with this thing for hours and couldnt even get a light to come on. I was ready to order another when I found a video explaining how to fix it if it doesnt work. The two communication lines are tied to the 1.6 volt line through pullup resistors but thats the wrong voltage so nothing works. You need to cut the trace and connect it to the 3.3 volt trace and pow the lights come on and everything works as it should. Its pretty simple with some soldering skills. Theres a video on youtube. Good luck!Worked with Arduino on 5V I2C Bus AfterI Removed Two I2C Pull Up Resistors on the KooBook module.I interfaced to this device with an Arduino UNO using project information I found at: with this name: "measure-heart-rate-and-spo2-with-max30102-c2b4d8"It failed to communicate reliable at first.After I removed the resistors I have reliable communications. I am still trying to get measurements that do not jump around wildly and not sure if I have to shield against ambient light or if the example programs, which are from the MAX30105 library, do not work well.First, these took much longer than anticipated to arrive. I placed an order directly to China ( a week after ordering these ), and that order arrived 3 weeks earlier.I had misread the MAX30100 rather than MAX30102. I was disappointed to have ordered the wrong module, but decided to adjust my code accordingly. Nothing has worked. I scratched all of my code and went directly for the MAX30102 (and 3010x) example code and these modules are still not recognized and have yet to work.When I ordered these, I am confident they said "free returns" (I usually won't purchase if I there aren't free returns, though I typically keep my purchases). They aren't listed as "free returns" now, and the seller is expecting my to pay twice the value of the product on the returns. Look elsewhere - anywhere will ship faster.This sensor was defective as shipped.
