i have a HDPM01 compass module..i have made conections as prescribed in the datasheet. vin,gnd are connected to the resp pins of arduino..SCL to A4 and SCLK to A5.. when i run i2c scanner it says no device connected... i have soldered the wires dirctly ...what would b d prblm in my case?? when i…

HDPM01 module

system April 20, 2014, 6:36am 2

What value I²C pull ups have you fitted?

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