Hardware overview

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Flexbot PCB

Microprocessor (ATMega32u4)

Datasheet

6-Axis Sensor (MPU6050)

Datasheet

  • Gyroscope Features: The triple-axis MEMS gyroscope in the MPU-60X0 includes a wide range of features:
    • Digital-output X-, Y-, and Z-Axis angular rate sensors (gyroscopes) with a user-programmable full-scale range of ±250, ±500, ±1000, and ±2000°/sec
    • External sync signal connected to the FSYNC pin supports image, video and GPS synchronization
    • Integrated 16-bit ADCs enable simultaneous sampling of gyros
    • Enhanced bias and sensitivity temperature stability reduces the need for user calibration
    • Improved low-frequency noise performance
    • Digitally-programmable low-pass filter
    • Gyroscope operating current: 3.6mA
    • Standby current: 5µA
    • Factory calibrated sensitivity scale factor
    • User self-test
  • Accelerometer Features: The triple-axis MEMS accelerometer in MPU-60X0 includes a wide range of features:
    • Digital-output triple-axis accelerometer with a programmable full scale range of ±2g, ±4g, ±8g and ±16g
    • Integrated 16-bit ADCs enable simultaneous sampling of accelerometers while requiring no external multiplexer
    • Accelerometer normal operating current: 500µA
    • Low power accelerometer mode current: 10µA at 1.25Hz, 20µA at 5Hz, 60µA at 20Hz, 110µA at 40Hz
    • Orientation detection and signaling
    • Tap detection
    • User-programmable interrupts
    • High-G interrupt
    • User self-test

Magnetic Sensor (HMC5883L)

Datasheet

  • 3-Axis Magnetoresistive Sensors and ASIC in a 3.0x3.0x0.9mm LCC Surface Mount Package
  • 12-Bit ADC Coupled with Low Noise AMR Sensors Achieves 2 milli-gauss Field Resolution in ±8 Gauss Fields
  • Built-In Self Test
  • Low Voltage Operations (2.16 to 3.6V) and Low Power Consumption (100 µA)
  • Built-In Strap Drive Circuits
  • I2C Digital Interface
  • Lead Free Package Construction
  • Wide Magnetic Field Range (+/-8 Oe)
  • Software and Algorithm Support Available
  • Fast 160 Hz Maximum Output Rate

Barometric Pressure Sensor (BMP085)

Datasheet

  • Pressure range: 300 ... 1100hPa (+9000m ... -500m above sea level)
  • Supply voltage: 1.8 ... 3.6V (V_DDA), 1.62 ... 3.6V (V_DDD)
  • Low power
    • 5µA at 1 sample/sec in standard mode
  • Low noise
    • 0.06hPa (0.5m) in ultra low power mode
    • 0.03hPa (0.25m) ultra high resolution mode
    • < 0.1m possible with software averaging algorithm
  • Temperature measurement included
  • I²C interface
  • Fully calibrated

Bluetooth Low Energy Module (HM11)

Datasheet