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- Mon Aug 22, 2005 2:13 pm
- Forum: General Discussion
- Topic: Is there a PCB pattern for infrared tach July 7 Servo?
- Replies: 22
- Views: 4974
I am trying to build a tachometer/speedometer myself as a senior design project. Is the schematic attached a workable schematic. I am trying to build a digital warning speedometer that will drive an 8 ohm speaker when it hits 60 mph, then the tone increases every ten miles, 70, 80 and so on. I have ...