Hey all,
Since I've determined I don't have the programming chops to port firmware to the Due, I'm just going to use Smoothie. I happen to have an LPCXpresso 1769 that isn't up to anything, so I've been inspired by this: [smoothieware.org]. The past few days I've been messing around with KiCAD making a board for the LPCXpresso that's similar to RAMPS: [github.com]. It's got slots for 5 steppers (Pololu style), 4 power MOSFETs (one that has its own independent 12V line), a MicroSD slot, endstops, 3 thermistors, and can be powered from the USB or the power source. And I'm going to add an I2C line for any cool add-ons that may appear.
While I suspect I'll be the only one who ever uses this (which is fine; I did it mostly for my own amusement), if someone would take a quick look at it and tell me if I've made any major errors, I'd appreciate it. I'm a mechanical engineer, so my board layout skills have come from looking at RAMPS and Gen7 and lots of guesswork. I probably won't start buying parts or sending the boards to fab for a while, but I figured the longer it's out in the wild the more likely it is that someone is bored enough to check my work.
Thanks!
Chris
Since I've determined I don't have the programming chops to port firmware to the Due, I'm just going to use Smoothie. I happen to have an LPCXpresso 1769 that isn't up to anything, so I've been inspired by this: [smoothieware.org]. The past few days I've been messing around with KiCAD making a board for the LPCXpresso that's similar to RAMPS: [github.com]. It's got slots for 5 steppers (Pololu style), 4 power MOSFETs (one that has its own independent 12V line), a MicroSD slot, endstops, 3 thermistors, and can be powered from the USB or the power source. And I'm going to add an I2C line for any cool add-ons that may appear.
While I suspect I'll be the only one who ever uses this (which is fine; I did it mostly for my own amusement), if someone would take a quick look at it and tell me if I've made any major errors, I'd appreciate it. I'm a mechanical engineer, so my board layout skills have come from looking at RAMPS and Gen7 and lots of guesswork. I probably won't start buying parts or sending the boards to fab for a while, but I figured the longer it's out in the wild the more likely it is that someone is bored enough to check my work.
Thanks!
Chris