Hi,
I have a Pro-Ject Debut Carbon DC turntable which I am pretty happy with except I'm bored with swapping from 33 to 35 rpm my moving the belt as I also have to lift the platter. Yep, I'm lazy.
I'd like to add a speed box but I can't as they provide a 16v AC supply to the 16v turntable motor and my tt is expecting 15v DC as it generates its own 9v ac to drive the 9v motor that's standard in the newer pro-Ject tts.
I've not looked inside yet but I assume there's some fairly unsophisticated electronics in there to generate a nice (50hz?) 9v ac signal for the motor. I could look at making my own switched board to provide the optional 67.5? (or something) hz signal to drive the tt at 45 rpm or I could just get one of the older 16v motors and a speedbox and wire the tt up the old-fashioned way.
I've not managed to find any info on the electronics inside the tt as yet but if anyone has any info, it would be gratefully received. or if someone has some other suggestions (yes, I could get a new tt but that's next years budget 🙂 )
I have a Pro-Ject Debut Carbon DC turntable which I am pretty happy with except I'm bored with swapping from 33 to 35 rpm my moving the belt as I also have to lift the platter. Yep, I'm lazy.
I'd like to add a speed box but I can't as they provide a 16v AC supply to the 16v turntable motor and my tt is expecting 15v DC as it generates its own 9v ac to drive the 9v motor that's standard in the newer pro-Ject tts.
I've not looked inside yet but I assume there's some fairly unsophisticated electronics in there to generate a nice (50hz?) 9v ac signal for the motor. I could look at making my own switched board to provide the optional 67.5? (or something) hz signal to drive the tt at 45 rpm or I could just get one of the older 16v motors and a speedbox and wire the tt up the old-fashioned way.
I've not managed to find any info on the electronics inside the tt as yet but if anyone has any info, it would be gratefully received. or if someone has some other suggestions (yes, I could get a new tt but that's next years budget 🙂 )
That's poor - supplying a DC to AC power supply that only does 1 speed!
Could you use 1 channel of a L6470 Stepper Driver (cheap boards on Ebay)?
Max 3 Amps.
Control by Arduino Nano. This also allows you to ramp the speed on start and stop.
I used this set-up to drive my turntable by a re-purposed printer stepper motor.
Could you use 1 channel of a L6470 Stepper Driver (cheap boards on Ebay)?
Max 3 Amps.
Control by Arduino Nano. This also allows you to ramp the speed on start and stop.
I used this set-up to drive my turntable by a re-purposed printer stepper motor.
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