Current main topic notes (includes mini-projects, common circuits and common code snippits etc.)

(+) 20 DIY Solar Finder Scope

(-) Dec 1969 (no desc)

Mabuchi FC130SA motor (Motor coil 30 (ohms ?), 3-24 (12v 8200rpm, 24v 16,800 no load), no looad current 30-40mA

Tail motor with an encoder, a total output two quadrature (phase difference of 90 °) pulse signal.

Resolution 334, which means that each revolution of the motor cycle pulse output 334.

5: Original with socket, but without cable, FPC connector should be the way, but this connector is very expensive, even more than the price of the motor itself, so students do experiments or other general purposes, then use wire soldered directly on the PCB mode (after a good weld line tied to the body, to prevent broken).

Tail motor with an encoder, a total output two quadrature (phase difference of 90 °) pulse signal. Resolution 334, which means that each revolution of the motor cycle pulse output 334. 5: Original with socket, but without cable, FPC connector should be the way, but this connector is very expensive, even more than the price of the motor itself, so students do experiments or other general purposes, then use wire soldered directly on the PCB mode (after a good weld line tied to the body, to prevent broken).


Encoder circuit, from description :

334 line, phase AB quadrature encoder, with (overlapping) square wave allowing direction detect

Nom. 1.8-3v3, 5v 'recommended' must use with current limit resistor, needs stable supply.

LED is red, Vfwd 1v5, max 21mA (tested at 3v3 using 82 ohms current limit resistor)

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(+) 72 Drift alignment

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