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Technology · Item

Signal writer

A chart recorder: powered, it draws the signal it receives on paper; each full sheet becomes a readout.

EA3Advanced electronics · Side quest

In the game

How to get it

At the grid: 4 iron sheets, a lens over the pen, copper wire on each side of a coil, a glowing dial: 1 writer (the octo writer takes 2 octo fibres in place of the wire and draws 8 pens). Put paper in it and power it.

What it is for

See how a tank, a battery, the wind or a machine behaves over minutes or hours; keep readouts as cards.

Why it exists

Engineers read curves: the writer turns a factory into a story you can read later.

The same text the game shows in its progress tree and on the item's sheet (I).

How to get it

At the grid: 4 iron sheets (corners), a lens (top middle), 2 copper wires round a coil, a glowing part (bottom middle). The octo writer has 2 octo fibres in place of the wires and reads an octo fibre: eight pens in eight colours.

How it works

  • Paper is needed: right-click with paper, or send some by conveyor. No paper, the pen lifts.
  • Speeds: 20, 5 or 1 point a second, one per 10 s, one per minute; a sheet is 128 points.
  • Up to 16 written sheets are kept in order; take them as readouts and read them by right-clicking in hand: a graduated graph, the values under the mouse.
  • Its desk screen shows the sheet being written and the whole history.
  • Power 15 W; a Record input lets it write only while that signal is on.

Right-click a block to place it, facing you. Broken, it comes back whole.

On the progress path

EA3Advanced electronicsSide quest

A sub-action of the step OWL-8 microcontroller: not needed to go on, but counted in your progress.

  1. BeforeEA2 · Automate a machine
  2. This stepEA3 · OWL-8 microcontroller
  3. NextEA4 · Serial screen

See it on the progress path

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