Recently, analog displays have come back in vogue. This is partially due to the common steam punk theme that is popular right now. [Cristiano] has done an analog display, but instead of brass and polished wood, () with it. He purchased a cheap tachometer from ebay. A circuit had to be designed to give the tach the signals needed for it to operate, and you can download the schematic from his site. As you can see in the video above, it works well. We think that “shift” light might get annoying pretty quickly.
The thing about my that makes it a challenge is that I’m going for an early 1970s customization job, not the far easier late 1970s routine. My van won’t have Aztecs On Mars airbrush murals or a wood-burning stove (not that there’s anything wrong with those things), but it does have a telephone-handset-style 23-channel CB radio, , and now it has a Watergate-burglary-era cheap aftermarket tachometer.
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