Home |
Search |
Today's Posts |
|
#1
|
|||
|
|||
Control Unit for Home Built Rotator from Pitch-Prop Motor
If you do like electronics projects for the sake of electronics
projects, feedback control is an interesting way to go, though. ============================ Talking rotor position feedback ,instead of the traditional potmeter in bridge circuit with analogue meter readout ,you could try a low cost synchro system utilising 2 stepper motors from discarded hard drives , dot-matrix printers or flat bed scanners ,with 1 stepper motor mechanically coupled (either directly or via a reversed rotational reducer) to the rotor ,the other in the shack as a readout device. The circuit I found on the web (via Google)needs 5 wires between the stepper motor coupled to the rotor and the control unit ,located with the other stepper motor in the shack. The circuit includes 4 TIP120 NPN transistors 2 LM324 dual Opamps and a few diodes and resistors. The stepper motor in the shack could either be provided with a rotating or sliding pointer ( the latter from an old 1950-60s radio) , or be mechanically linked to a counter (for example from a discarded tape recorder) A potential 'recycled components' project. Frank GM0CSZ / KN6WH |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
FCC SHUTS DOWN the 'Boy Broadcaster" from ME | General | |||
FCC SHUTS DOWN the 'Boy Broadcaster" from ME | Policy | |||
Hal Turner - the dumbest man on radio - OFF THE AIR! | Shortwave | |||
a page of motorola 2way 2 way portable and mobile radio history | Policy | |||
Tip-of-the-Day: Check your Ham-IV Control Unit | Antenna |