Category: Hardware

Hardware modifications for the Celestron Compustar

In this post I’m describing all the hardware modification that can be done to the Celestron Compustar to improve or enhance its operation. The first of these modifications was previously posted in the “New Compustar Firmware” post, but it has been now moved here. A non volatile memory AND real time clock for the Compustar …

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The Compustar schematics. Part 2: the display board

This is the second part of the Celestron Compustar schematics. You can find Part 1 here: As I did in part 1, since there is no silk screen on the board, the designators (IC1, R1, and so on…) are just made up, and may also be quite randomly assigned. Moreover, I’ve not put in the …

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The Compustar schematics. Part 1: the microprocessor board

One of the things I’ve made to understand how the Compustar works is to reverse engineer it’s schematics. Now I’m publishing this schematic and a 3D rendering of the board both to explain in little more details how it works and to aid anyone who has to repair it. This will be a two part series, …

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EqPad: an Arduino joystick for Eqmod

Using regularly EqAscom to drive our EQ6 mount, we found the necessity to move the telescope in an easy way without having to use the PC keyboard or mouse. Since EqAscom can use a joystick to do this, we realized a dedicated joystick.   Mode of operation In addition to the standard four movement keys …

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