The title says it. I'm making a wood lathe primarily from garbage and dollar store items. Why? because that's what I do here. What makes it fancy? The electronics. Well, that's relative to the usual DIY lathe projects I see. There are many of them out there, and they are typically a hand drill or a motor with a switch attached to a board. Some of them look beautiful and work really well, but mine will be a tad different.
The main feature that makes this project different is that it will have closed loop speed control. With a lathe, speed control is pretty important, but I'm certainly not going to put together a complicated gear set to achieve it. I'm going to take a stab at controlling the speed electronically.
Here is a quick overview of the project. All of the details will be added in the project logs.
Attempt 1 of 2 (unsuccessful):
- 100V 1kW universal motor from a vacuum cleaner.
- high power rectifier and IGBT set from an inverter type microwave oven.
- ATmega 328 controller
- structure made from 2x4 and other scrap lumber
- reflectance sensor attached to motor for tachometer
- LCD display on the control panel
- Here's the schematic (or click the one on the left for larger version)
Attempt 2 of 2(also unsuccessful):
- AC motor from washing machine
- Triac pair (BCR8PM) and accompanying circuitry from washing machine
- MOC3063 triac drivers
- other parts from attempt 1
Here's the schematic: