I've been able to successfully read in values from an ADXL345 accelerometer from an Arduino Uno by connecting them with short ~10 cm jumper wires (stranded). I use 3.3 V VCC, which is within the range recommended by the data sheet. However, I want to extend the accelerometer from the Arduino. I tried using 40 cm lengths of 22 AWG wire (solid & thicker than jumper wires), but then I read all zeros. I made sure to connect every wire carefully to the required pins.
Does this suggest that the input voltage drops too low given an increase in resistance by the wires? How do I correct for this problem?
Thanks for your help.