MEP EP#68: Sonic Massage

Podcast Notes

• Parker
  • IoT Compressor Update with part list!
    • LSM9DS1
      • IMU for vibration sensing
      • iNEMO inertial module: 3D accelerometer, 3D gyroscope, 3D magnetometer
      • 3.3V, I2C
    • SPU0410HR5H-PB
      • MEMS Microphone
      • 3.3V
      • Analog signal, will be boosted with an opamp
    • TMP102
      • Board Mount Temperature Sensors Low Power Digital Temp Sensor
      • 3.3V, I2C
    • PX3AN2BS250PAAAX
      • Pressure Transducer
      • 1/8″ NPT Male fitting
      • 5.0V
      • Analog output 0.5V – 4.5V over pressure range
    • 6225AXXSZS-DC3
      • SSR to control the compressor switch
      • 3VDC to 32VDC control signal
      • Place 10ohm in series from pin from particle photon for protection.
      • TVS 3.3V for transient protection.
• Stephen
  • Voltage Standard Calibration complete!
    • Used the Keithley DMM7510 to dial in the voltage standard.
  • Synth Update: Now with sound effects!
    • Stephen played a bunch of warbles
    • Only one section is working at the moment – VCO – voltage controlled oscillator
    • Next update – rest of VCL complete. MIDI control – animator up and running. LFO low-frequency oscillator done.
  • Space Echo is now working (woohoo)
    • Mechanical adjustments are calibrated too!
    • Break the tape in to let it run, the sound gets better.
• Pick Of the Week (POW)
  • OPA549
    • High-Voltage, High-Current Op Amp, Excellent Output Swing
    • 8A Continuous 60V
    • $23.44
    • Could be used for the SSPS
• Rapid Fire Opinion (RFO)
  • JuiceZero by SparkFun
    • DIY version of the Juicero press made out of artisan cardboard and using Capri sun
  • Google Lens will let smartphone cameras understand what they see and take action by TechCrunch
    • google.io conference Google AI or AI technology.
    • Evolution of Google Glass with better human interaction?
  • Robot Lives in Your Garden and Eats the Weeds found on HackADay
    • Franklin Robotics was started by former iRobot employees.
    • Name of the robot is Tertill
    • Short plants bad, tall plants good.