HOW TO – Speak & Spell bending

Music Technology
HOW TO – Speak & Spell bending

Peter writes –

“I just added a few things to my site that may be of interest. One is a very small collection of speakandspell bending schematics, the other is a page loosely explaining how to added a programmable step sequencer to your speakandspell to make a speakandspell drum machine…

The effect is a glitched out sounding, programmable sequence. There are 8 steps in the sequence and each can be turned ON or OFF. As the sequence runs, it advances one step at a time, 1 thru 8, then repeats. When a step is set to the ON position, it activates 2 effects in the Speak&Spell for the duration of that step. The 2 effects are a tone generator and a “hold” effect.

The schematic above shows how to locate these bends. “Link & bending page.


  • Casper Electronics photo gallery – Link.
  • MIDISpeak: Speak & Spell MIDI Kit – Link.
  • Awesome Felt Speak and Spell, Speak and Math + Others – Link.
  • MIDISpeak kit – Speak-n-Spell talking toy MIDI retrofit – Link.
  • Circuit Bent Speak and Spell… – Link.
  • Circuit-Bending: Build an Incantor – Link.
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