Just a question regarding the Replicape power supply limits. Can this board be run off 28 volts?
I just got hit by 2 power interuptions during a long print which really pissed me off and now I’m thinking of running this printer off a 24v battery, however if I am to float charge it, the board will be getting closer to 28 volts. Would this be ok?
If you are not using a heated bed(power) you could try a dc to dc converter so that any variation in source voltage would just get filtered out.
The Max input on the step down converter is 24V, so no…
Thanks. I might try using a 18v battery then and isolate with a diode so it can kick in straight away if the 24 volt supply drops out.
@tizzledawg why not get a computer-UPS unit? They make units that aren’t too pricey with several kWh providing direct AC (110 or 240V depending on where you live). I’m not sure how the print would be affected if you suddenly drop from 24 to 18V… probably negative impacts since temp on bed and heater will drop a bit.
Actually there is a specific DC style UPS board that could work for many low powered printers (not the heated bed, but at least the mechanics and fans) http://www.mini-box.com/OpenUPS?sc=8&category=981
Again, you could absolutely use one of those, a couple of standard gel cell 12V batteries and even program it to send a loss of power to send your printer into a pause mode until power returns. Yes, a bit expensive but so is a standard UPS and this is hugely efficient compared to converting to AC and then back to DC for no good reason. They also make a much simpler no frills 12V unit for SLA batteries http://www.mini-box.com/picoUPS-120-12V-DC-micro-UPS-battery-backup?sc=8&category=1264