These sensors use I2C or SPI to communicate, 2 or 4 pins are required Serial.print("SensorID was: 0x"); Serial.println(bmp.sensorID(),16); Serial.print(" ID of 0xFF probably means a bad address, a BMP ...

This example code is in the public domain. http://www.arduino.cc/en/Tutorial/Array int timer = 100; // The higher the number, the slower the timing.

Arduino projects can quickly run into performance and memory limits, but smart coding techniques keep them fast and reliable. From fine-tuning variables to mastering debugging tools, these methods ...