25.Feb.2024
Forum 64 (Webseite)
|
DIY: "Joystick Reanimator" repairs micro switches using electric impulses
C64 fan 'GI-Joe' - a service technician in real life - has come across many faulty microswitches in his professional life. The silver-plated switching contacts of switches that only have to switch very low currents were often oxidized: the arcing that occurs at higher currents, which "cleans" the oxidizing contacts in a kind of self-cleaning function, does not occur at lower currents. Sooner or later, the electrical resistances become too high due to the oxidizing switching contacts, even though the switch switches mechanically perfectly.
To solve this problem with the microswitches built into many joysticks, GI-Joe invented the "Joystick Reanimator": A joystick that no longer works is connected to the device. When the stick is moved or a fire button is pressed, the associated switch is then activated with a current high enough to generate the "self-cleaning" arc. The circuit board also contains connection sockets for a multimeter so that the electrical resistances of the microswitches built into the joystick can be easily tested.
German and English instructions as well as all documents required for reproduction (including circuit diagram, assembly list and KiCad project files) are available for download. (cg) (Translation: cg)
[News message: 25. Feb. 2024, 02:23] [Comments: 0]
[Send via e-mail] [Print version] [ASCII version]
|
