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Anything related to printer controllers not being Duet, RAMPS or Sanguinololu: microprocessors, motor and heater driver circuitry, gEDA/KiCAD issues, soldering tips, etc.
Re: Magnetic Rotary Encoder - Basic Questions - 18 years ago
Nothing like doing the research! Looks like the RRRF encoder has a whole slew of output options. Check them out at . I've never heard of SSI - sounds interesting. The magnetic rotary encoder board does have a slew of output options, but I was wondering what does the magnetic sensor output look like that allows the AS5040 chip to decode the input and break it up into either pwm, ssi, etc. Thaby snoop911 - Controllers
Re: Magnetic Rotary Encoder - Basic Questions - 18 years ago
The motor that drives the paper thru, with the transparent disc and optical sensor, has quadrature outputs. It has 2 squarewave outputs (Unfortunately, I don't have 2 probes, so I can't verify they are out of phase with each other), but both are going to the main canon controller board... the motor is (was) being driven by 2 wires (DC) via PWM. Thanks for the great link! He is also countby snoop911 - Controllers
Re: Magnetic Rotary Encoder - Basic Questions - 18 years ago
So the question is: do you want to use the printer as part of a repstrap? Definitely. I tore down the printer some more yesterday, and found another motor (its used to move the print head across the paper (width-wise)). Haven't found ITS sensor, but if its a stepper motor, I could dedicate that to the cartesian axis control portion... freeing up the the optical sensor for the extruder. Asby snoop911 - Controllers
Re: Magnetic Rotary Encoder - Basic Questions - 18 years ago
Reprap (Darwin) uses a stepper motor controlled by a PIC, so where does the Magnetic Encoder get used? I was thinking of using my printer parts (pwm driver ic, and the optical encoder / motor), but is it perhaps better to go magnetic and buy the Magnetic Rotary Encoder board? Just as a test, I hooked up a scope to the optical encoder output, and it toggles crazy fast when I move the disc.by snoop911 - Controllers
Re: Magnetic Rotary Encoder - Basic Questions - 18 years ago
So it would go, PC (or Arduino) <-> Magnetic Rotary Encoder <- Sensor <- Optical Encoder Disc with the Magnetic Rotary Encoder also connected to the Motor via: Magnetic Rotary Encoder -> PWM Motor Driver Chip -> Motor Is this right?by snoop911 - Controllers
Magnetic Rotary Encoder - Basic Questions - 18 years ago
First all, I love the sound of this project! I'd like to start experimenting, and learn how to do all these wonderful things people are talking about, but I have a looooooonnnngggg way to go... To start tinkering, I have an old canon printer that I could use for parts, but I'm not exactly sure how the Magnetic Rotary Encoder fits in to all this... The printer has a motor that drives the paperby snoop911 - Controllers