If a GPS speedometer is accurate, why did I get a speeding ticket when using one?
Surely the GPS technology should be more accurate than the speedometer? – RP You’re right that GPS is usually more accurate ...
Hackaday8 年
Analog Guts Display GPS Velocity In This Hybrid Speedometer
Instead, this build is an analog display for GPS-acquired speed data ... The display itself is a gutted marine speedometer fitted with the movement from a motorcycle tachometer.