Speedmaster
The winning circuit in 3D
Published in issue 365, May 2007
Here is the circuit voted winner of the International R8C Design Competition by Elektor Electronics readers: an intelligent 3D accelerometer that not only measures acceleration on all three spatial axes, but also calculates the total distance moved. And, as promised, a ready-assembled printed circuit board!
Resistors R1,R2,R3 = 1kΩ R4 = 10Ω R5 = 4kΩ7 Capacitors C1,C2,C4-C7,C10,C11 = 100nF C3 = 10µF C8,C9 = 1µF 25V C12 = 22µF 25V Semiconductors D1 = 1N4001 T1 = BC547C IC1 = MMA7260QT (Freescale) IC2 = TS2950CT-3.3V MOD1 = R8C/13 carrier board Miscellaneous K1 = 10-way SIL pinheader S1,S2,S3 = pushbutton LCD1 = LCD type EA DOG-M, 3 lines, with backlight 32-way socket for MOD1 Ready assembled board 070021-91, populated & tested board (except MOD1 and K1)
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Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.
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