Hey folks, Any ideas here? Whether or not the sensor is connected the serial output is the same…I am assuming that means noob error. I have read the data sheet a few times now and looked all over for examples… Anyway, here is a pic of the Fritzing diagram and here is a picture of the actual wired …

[image] srfnmnk: Whether or not the sensor is connected the serial output is the same What serial output? I don't see any output in your code. Also, you need to be doing some Wire.read commands to read the data, not just writes. The steps needed to get this to work are quite complicated so I…

First, you won't need #include <application.h> #include <spark_wiring_i2c.h> If you are working with an .ino file application.h (or better the newer Particle.h) is included automatically and that in turn will include the headers needed to use Wire in your code. Next, the address. You were using …

Thanks guys. I guess I should have been more clear. @ScruffR , you’re correct, there is another board I have with the same address but not part of this circuit. Here’s the full code, I was trying to save people from having to read the entire code set, I figured it was the wiring. Please find the ful…

@srfnmnk , try running the I2C scanner to see if the device shows up and at what address: [image] I2C Humidity Sensor General A while back, somebody pointed me to this, which I’ve used to debug I2C issues on a Spark: // -------------------------------------- // i2c_scanne…

Good to hear you got unstuck :+1: Just some coding hints about this if(Wire.available() == 6) { ... } tHeight = ((((long)data[1] * (long)65536) + (data[2] * 256) + (data[3] & 0xF0)) / 16); temp = ((data[4] * 256) + (data[5] & 0xF0)) / 16; altitude = tHeight / 16.0; …

@ScruffR I didn’t get unstuck yet but I am gonna tray what @peekay123 suggested. Gotta figure out how to scan but I think I can get that. :slight_smile: thanks for the help folks!

Photon + MPL3115A2 - Not Reading

Troubleshooting

peekay123 January 18, 2017, 2:48pm 5

@srfnmnk, try running the I2C scanner to see if the device shows up and at what address:

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Photon + MPL3115A2 - Not Reading

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