I wrote a few plugins for RTXI. Here they are for the world to see.

• Istep A stepping voltage (presumably put through an amplifier), plotted below the return voltage, so you can see if your cells might die.

  Requires Qwt.

• mux Combine multiple plugins' inputs in useful ways.

• noise Make random noise.

• ramp A signal that ramps up controllably randomly.

• realfir A finite impulse response filter that doesn't crash.

  Requires boost circular_buffer

• sample_player Play back some crazy signal you made elsewhere without breaking realtime.

• sine Sine wave generator.

• square Square wave generator.

• variancer Calculate and display the variance ratio between a sine wave and the resultant signal.