by RetireeJay » 2017-Jun-Mon-20-Jun
There are many posts about using a separate power supply for the heated bed. But if your power supply has enough watt capability (more than 350 watts) and if you have connected it to the Printrboard correctly, the voltage sag should be very minimal.
"Connected correctly" depends on what kind of Printrboard you have (Rev D or Rev F) and exactly what kind of power supply you have. The typical case these days is a Rev F board, which has a 6-pin connection for power. In that case, you should be using the 6-pin connection from the ATX supply.
Printrbot Plus operational January 2013
Brass threaded rods (5/16" X 18) & nuts for Z axis
GT2 belts & pulleys
Cable chain to reduce probability of fatigue failure in wires
E3D V5 Hot End, 0.4mm nozzle, also 0.8 and 0.25 in use occasionally
PB fan mount + 40mm fan -- using printed mount adapter, not the E3D supplied fan
Injection molded extruder gears
Optical Z "endstop" (custom designed and built)
Have used many pounds of T-Glase filament. Now also doing some work with Ninjaflex SemiFlex
Print on glass with Scotch Craft Stick or other glue stick
"My next printer is..." Prusa i3 MK3, upgraded to MK3S