The Analog Thing

The Analog Thing (abbreveated as THAT) is a small analog computer built for educational and recreational purposes by anabrid GmbH. The computer will be available for sale at the net cost of its components, i.e. as cheap as possible and not-for-profit. We are targeting a retail price of around EUR150. The component list, circuit diagrams and circuit board layouts of this computer are released as Open Source, and information on how to build it from scratch and how to operate it will be released here on this wiki.

Version 1.0: Specifications and Photos

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  A first glance

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  Front board v1.0

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  Base board v1.0

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  Some test circuit closeup

Assembly instructions

The following sections describe the assembly process of The Analog Thing with BASE board revision 1.0, 04.2021. This board has some minor quirks that must be taken care of as described in the following.

Basically the assembly process is straightforward based on the bill of materials and is straightforward. The BASE printed circuit board should by assembled according to the following steps:

• First, solder in all resistors, capacitors, inductors, transistors, and diodes but leave out R24, R25, and D1 (we will come back to these later).

Circuits

to be added