Received Puma boards / My Puma project!
Posted: Sat Feb 26, 2011 2:23 am
Got a nice little post package today, my Puma boards arrived!
The boards are really impressive, though few ideas did come to mind, don't know how much of these been discussed elsewhere (I haven't been as active on the forum as I should've been )
Injector pins are packed really tight. There's a bit of estate to spread out the LM1949s and give a little more space to the headers, this would allow use of meatier connectors; peak phase reaches 4A which might deal some punishment on regular pins and it would be nice to have latching housings on the pins. The stepper controller suffers a similar condition; it would benefit greatly from using a polarized latching connector.
There are few SMD components really close to the edges, I wonder if they'll touch the rails easily. The mounting holes of course eliminate the need, but it'd be a nice choice.
Fuses and USB connector have been discussed about; for the USB I'll make an adapter board to Mini-B connector, and the fuses are mounted on a chassis holder. For production spin, the fuses could be SMD or through-hole miniature types? (there are holders for both types if soldering a fuse doesn't sound too great an idea.) Also, I'm guessing fiducials are to be used in later spins?
I guess I'll spend a few days hunting for components, already looking forward to soldering the beast together
The boards are really impressive, though few ideas did come to mind, don't know how much of these been discussed elsewhere (I haven't been as active on the forum as I should've been )
Injector pins are packed really tight. There's a bit of estate to spread out the LM1949s and give a little more space to the headers, this would allow use of meatier connectors; peak phase reaches 4A which might deal some punishment on regular pins and it would be nice to have latching housings on the pins. The stepper controller suffers a similar condition; it would benefit greatly from using a polarized latching connector.
There are few SMD components really close to the edges, I wonder if they'll touch the rails easily. The mounting holes of course eliminate the need, but it'd be a nice choice.
Fuses and USB connector have been discussed about; for the USB I'll make an adapter board to Mini-B connector, and the fuses are mounted on a chassis holder. For production spin, the fuses could be SMD or through-hole miniature types? (there are holders for both types if soldering a fuse doesn't sound too great an idea.) Also, I'm guessing fiducials are to be used in later spins?
I guess I'll spend a few days hunting for components, already looking forward to soldering the beast together