HP 25 (Woodstock) Calculator Power Supply
Print Profile(2)
Bill of Materials
- Piles AA 1,5Volt x 2:
- Ressort double x 1: récupéré sur un bloc de piles ou un ancien appareil
Description
This case, powered by two AA batteries, offers a simple way to revive a Hewlett-Packard HP 25 calculator (or another from the Woodstock series) lacking a battery or with a malfunctioning one.
In addition to printing, you will need two AA batteries and a double spring (sourced, for example, from an old device or a battery case). This spring ensures the series wiring of the two 1.5-volt AA batteries.
Using a small flat-head screwdriver, remove two small supports near the two tabs and another support on the back of the case. This is a fairly easy operation.
IMPORTANT: The case features very fine inlaid markings indicating the + and - polarities of the batteries. It is essential to respect these polarities before installing the battery case in the HP 25.
To make these + - markings more visible, you can color them with a marker, or print them in a different color using the AMS profile.
All that remains is to find a filament color that closely matches the hue of your venerable HP 25 😉.
Hopefully, this simple modification inspires you to reuse this delightful HP 25 calculator.
Happy RPN…
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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