Veroboard dimensions


Following on from Veroboard and the Sequencer bus described in Sequencer notes, the sequencer bus consists of two separate stripboard designs:

  • The first step
  • The second and subsequent steps all use the same board layout

With respect to the 9T24H board used for the Second (and subsequent) Step Sequencer Bus v0.7… as there are 9 of these boards for the 2-10 potentiometer stages for each sequencer (10 step) stage, is it not more economical to combine on one larger board, of n x 9 Tracks?

Likewise, the v0.7 of the First Step Sequence Bus, requires 12T30H, will that not fit multiple times on a larger size board?

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PCB prototyping


PCB etching, or rather routing, via CNC, as opposed to using Ferric Chloride, is not too different from 3D printing, with respect to the equipment (hardware/software)…

In addition to routing, if you prefer the old fashioned etching, CNC can be used to mark out the traces using a pen, instead of having to print the PCB masks using photosensitive boards…

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Dual Timer Build


Following on from Atari Punk Build here is a minimalistic but versatile design of a dual timer, pulse generator.

It has been derived from an even simpler APC design, which has the astable duplicated and provides outputs from both of the astables, as well as ramp outputs for each.

In addition it also has the ability to add CV inputs to both of the astables, or to use a jumper to link both CV inputs to their own 10 nF capacitor to ground.

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