Difference between revisions of "ATtiny85 8MHz and ADXL345 via I2C with Arduino code"

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This is a small setup based on the ATtiny85 to make use of the advanced features of the ADXL345 accelerometer.
This is a small setup based on the ATtiny85 to make use of the advanced features of the ADXL345 accelerometer.


More..
== Parts ==
* Adafruit Trinket 3V ATtiny85 board
** No need for level shifting for ADXL345 I2C
** Comes with [Trinket Bootloader] to upload binary with USB during the first 10 seconds of power-up/reset
** Red LED on #1/PB1 is handy for debugging
* GY-291 ADXL345 Digital 3-Axis accelerometer breakout
** On-board 3.3V LDO for ADXL345
** I2C 4.7k pull-ups
** CS 4.7k pull-up - enable I2C, not SPI
** SDO 4.7k pull-down - I2C address 0x53
** Comes with 2.54mm pin header
 
== Wiring ==
* ATtiny -> ADXL345
* USB -> VCC
* GND -> GND
* #0/PB0 -> SDA
* #2/PB2 -> SCL
 
== Code ==
 
<code>
 
Code
</code>

Revision as of 23:22, 13 May 2015

This is a small setup based on the ATtiny85 to make use of the advanced features of the ADXL345 accelerometer.

Parts

  • Adafruit Trinket 3V ATtiny85 board
    • No need for level shifting for ADXL345 I2C
    • Comes with [Trinket Bootloader] to upload binary with USB during the first 10 seconds of power-up/reset
    • Red LED on #1/PB1 is handy for debugging
  • GY-291 ADXL345 Digital 3-Axis accelerometer breakout
    • On-board 3.3V LDO for ADXL345
    • I2C 4.7k pull-ups
    • CS 4.7k pull-up - enable I2C, not SPI
    • SDO 4.7k pull-down - I2C address 0x53
    • Comes with 2.54mm pin header

Wiring

  • ATtiny -> ADXL345
  • USB -> VCC
  • GND -> GND
  • #0/PB0 -> SDA
  • #2/PB2 -> SCL

Code

Code

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