Archive for November 2014

[HOWTO] PlainDSP audio shield: M2M Communication system

The Critical Tinkers team recently achieved an amazing application based on the plaindsp kit. The M2M protocol they developed provides a smart way to send information to an Arduino board using a plaindsp audio shield from any sound emitting device (e.g. a cell phone). Next video is a teaser which demonstrates the principle of operation, as long […]

Stepper Motors (Part 3)

Part 1, 2, 3, 4, 5, 6, 7 A4988 module Let’s go into the details of this module through the understanding of its pinout: The suggested basic wiring is as follows: ~ENABLE: GND MS1, 2 & 3: GND ~RESET connected to ~SLEEP STEP: step pulse DIR: rotational direction GND: same GND for VDD and VMOT VDD: 3.3V […]



Stepper Motors (Part 2)

Part 1, 2, 3, 4, 5, 6, 7 Stepper motor drivers These electronic devices are the interface between the stepper motor and the controller (e.g. Micro-controller, computer, etc.). Here is a short recap of the expected requirements for such an interface: Drive Unipolar and/or Bipolar motors Convert step commands into appropriate waveforms applied to the motor coils Set direction […]