pioneer car stereo knob,diy pc volume knob,2009 pontiac vibe radio knob

The carbon film of the potentiometer is severely worn, resulting in poor contact. It can be disassembled. Clean the carbon film of the potentiometer with a cotton ball dipped with a little anhydrous alcohol, and then drop some lubricating oil. It is best to adjust the position of the contact piece and change the original contact position. In this way, the potentiometer with the same resistance can be repaired and replaced.

Maybe the volume adjustment potentiometer is worn. You can buy it as it is and install it back. If it is hand-made, you can try to repair it with fine tweezers, alcohol and cotton balls.

The radio volume adjustment uses a potentiometer, that is, a variable resistor. Its working principle is that a moving piece slides on the resistance film to change the resistance, so as to adjust the volume. It can be seen from the working principle that the resistance film will be damaged after a long time; In addition, in order to reduce the cost, many volume potentiometers use devices with low quality. The resistance film of this kind of potentiometer is carbon film, which is easy to be damaged.

In addition, the structure of this potentiometer is relatively simple. External dust is easy to fall on the resistance film. When the resistance film is dirty, you will hear this cheering sound when you adjust the volume.

Adjust the volume as little as possible; Pay attention to using the radio in a clean place; Pay attention to the maintenance of potentiometer, and wipe the resistance film with absolute alcohol cotton swab; Change to a high-level (preferably sealed, metal film) volume adjustment potentiometer.

Sometimes, the word "machine" represents a feeling of being fresh and lasting. For example, mechanical watches are generally not as accurate as quartz watches, but undoubtedly have more collectable value. Another example is that mechanical keyboards are older than membrane keyboards, but can still provide good hand feel and service life that the latter cannot have.

Complex mechanical structure often means more difficult design and higher cost, or more space occupation. Once there is a cheaper, more universal and simpler solution, the original mechanical structure will be difficult to sustain in the face of popular demand.

Take the volume knob on the radio or old TV as an example, this is an excellent human-computer interaction scheme. But later, the volume knob was gradually replaced by buttons in the up and down directions.

Behind the volume knob is a kind of mechanical variable resistor, which can smoothly and correspondingly change the power output to the speaker when you turn them. However, the software developed faster and faster. Even though the mechanical variable resistor could be miniaturized, it could not escape the fate of being replaced on a large scale. It is not that it is not easy to use, but that the cost of the software solution is lower.

In 1999, Tom dewest, an audio engineer, made a radio with only pioneer car stereo knob interaction, which was undoubtedly against the trend at that time. At that time, people used to use buttons and display screens, just as now people are used to using touch screens.

Tom dewest, who achieved great success with knob interaction, said:

Now you have to find a way to get some feedback from the person who turns the diy pc volume knob, even if its real purpose is to send a bunch of zeros and ones to the computer.

Today, knobs still exist on different devices. For example, high-end audio equipment, or Leica cameras, but often such equipment is not cheap and small.

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