Making a Leslie Rotary Speaker
I have been playing more B3 Organ lately in gigs and I was wondering if there was a cheap small rotary speaker I could get.
The answer is no. I think there is a market for one.
I am really inspired by this genius design.
I also found this awesome half moon switch a guy sells on Ebay. It could probably be altered to use with this design.
Parts List #
3D Parts #
- 3D Parts on Thingaverse
- Get them printed at PCBWay
Hardware #
- 2x 608 fidget bearings 608 Steel Ball Bearings
- 8mm bolt
- 8mm nuts
- 3mm elastic cord
- Make a box out of plywood
Motor Circuit #
- Nema 17 Stepper motor
- TMC 2208 Driver chip
- 100uF+ for 12V Filter Cap (for the 2208)
- 555 Timer chip
- 12V Power Supply
- 7805 5V regulator
- 1000 uF for 5V
- resistors/potentiometers
- TRS 1/4" Sockets
Foot Switch #
- 2x foot switches (double pull double throw switch) DPDT Latching Switches
- 3x 3mm red leds
For simple switch (single pull double throw) to toggle high and low
Half Moon Switch #
Proposed changes to the Robothut design #
Make the foot pedal use a standard 1/4" TRS Balanced cable for the speed control. This is what the Nord half moon switches use.
Would need to modify the foot pedal 3D design to accommodate the TRS input socket. And wire the control board outputs to the 1/4" jack.
Could also put an optional rocker switch on the speaker box.
I would also love to be able to adjust the speed with some knobs. Slow, Fast, Decelerate, Accelerate.