1. Adxl345 digital three-axis acceleration of gravity tilt module Ar code iic / spi.
2. Name: the adxl345 module (three-axis acceleration of gravity).
3. use the chip: the adxl345.
4. power supply :3-5v.
5. means of communication: the iic / spi communication protocol.
6. measuring range: ± 2g ± 16g.
7. schematics, manuals and reference documentation of relevant data.
8. 51, the avr, the Ar microcontroller test code.
9. 3-axis, ± 2g / ± 4g / ± 8g / ± 16g.

* Distribution bit to adjust sensitivity
* A fixed bolt hole for easy installation
* Power indicator, the output signal LED indicator
* The comparator output, the signal is clean, waveform, driving ability over 15mA
* Wide voltage LM393 comparator
* A large area of rain board, more conducive to detect rain
* Board with positioning holes to facilitate installation
* Raindrops and control panels are separate, easy to wire leads

The flame sensor is sensitive to flame and is also reactive to ordinary light. It is generally used for flame alarms and other
purposes.

the small board output interface can be directly connected to the IO port of the microcontroller

small board analog output mode and AD conversion processing, can achieve higher precision