RADDS 1.5 Compatible Stepper Drivers? March 21, 2019 01:26AM |
Registered: 8 years ago Posts: 39 |
Re: RADDS 1.5 Compatible Stepper Drivers? March 21, 2019 03:37AM |
Admin Registered: 16 years ago Posts: 13,888 |
Re: RADDS 1.5 Compatible Stepper Drivers? March 21, 2019 11:26AM |
Registered: 8 years ago Posts: 39 |
Re: RADDS 1.5 Compatible Stepper Drivers? April 03, 2019 01:25AM |
Registered: 5 years ago Posts: 11 |
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peps1
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VDX
... the RAPS128 have the same pinout as the other "pololu-like" drivers - only the polarity of the enable-pin has to be inverted in the firmware ...
Thanks, VDX, I get the RAPS128 will work, I just wondering what my other options would be on the RADDS board?
Re: RADDS 1.5 Compatible Stepper Drivers? April 03, 2019 03:04AM |
Registered: 10 years ago Posts: 14,672 |
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Timpanogos Slim
There is a consideration with all trinamic drivers (and possibly others) that they require VMOT to be powered before VDD, which means that you have to assure that the DUE board is not powered over USB prior to the RADDS having 12v or 24v power applied. But that's not a RADDS thing, it's true no matter where you use them.
Re: RADDS 1.5 Compatible Stepper Drivers? April 05, 2019 02:13AM |
Registered: 5 years ago Posts: 11 |
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dc42
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Timpanogos Slim
There is a consideration with all trinamic drivers (and possibly others) that they require VMOT to be powered before VDD, which means that you have to assure that the DUE board is not powered over USB prior to the RADDS having 12v or 24v power applied. But that's not a RADDS thing, it's true no matter where you use them.
That's not quite true. You can apply Vdd before Vmot, but the SPI or UART interface won't work until you apply Vmot. So you have to delay initialising them until Vmot is present, and if Vmot is lost and then restored then you need to re-initialise them. Duet electronics with RepRapFirmware does this.
Re: RADDS 1.5 Compatible Stepper Drivers? July 05, 2019 02:27PM |
Registered: 9 years ago Posts: 2 |
Re: RADDS 1.5 Compatible Stepper Drivers? July 05, 2019 03:10PM |
Admin Registered: 16 years ago Posts: 13,888 |
// For Inverting Stepper Enable Pins (Active Low) use 0, Non Inverting (Active High) use 1 // :{ 0:'Low', 1:'High' } #define X_ENABLE_ON 0 #define Y_ENABLE_ON 0 #define Z_ENABLE_ON 0 #define E_ENABLE_ON 0 // For all extruders