Quoterepetier Maybe your problem is watched from the wrong side. If you change radius your center height compared to outside height changes but center remains constant. It's the outside that goes up or down. But the center position does only change with zlength or diagonal rod change since radius has no effect in center. noted! will revise my method since the guide are not entirely correct it seby skelator - Repetier
well that really contridict with all the guide we have all over the net , so you sugesting not to check Y=0 X=0 ? eg Y=5 X=5 example? or if understand this correctly, adjust my Z height for center and then calibrate ABC tower as usual?by skelator - Repetier
QuoteKurzaa Stupid question, sorry, but you are reloading the firmware after increasing your delta radius? yes of cause as I dont have epprom enable that only way to do it Quoteadavidm What coordinates are you testing the new hotend height at? If X=0,Y=0 then you will never see a difference. Try at one of the tower probing points instead. I'm stuck at calibrating the center height which Y=0 X=by skelator - Repetier
Hi, I recently printed a kossel 20x20 (http://www.thingiverse.com/thing:154832) but most of the other part are stock rostock like, carbon arm with plastic jaw, end effector, XYZ carriages etc, I have spend many hours trying to calibrate the printer still no sucess! I followed step by step guide from but I'm stuck at calibrating the center it too high, can't get it to lower down, his guide saiby skelator - Repetier
Quotedc42 You don't need to use PID control for the bed, and using it may make the mosfet run hotter. Leave it as bang-bang instead. ok I'll leave the bed as default for now, reason enabling was I'm expecting a Solid State relay to arrive anytime soon now , but first thing first I need to dry my filamentby skelator - RAMPS Electronics
Ok, did my first print on ABS I keep my voltage to 14v as dc42 suggested, can't go to 15v as check the capasitor it only rated to 16v I don't want to risk it, bed will take a while to reach 100c but it can.. now having problem with my marlin, I already enabled BED Pid in firmware configuration but M304 wont give me anything, so can't really set the PID for the bed need to figure out why. Plus Iby skelator - RAMPS Electronics
Quotegforce1 Ohm's law: U(volts) = I(amps) x R(ohm). ==> I = U/R ==> I = 14/1,8 ==> I = 7,77 Amp. Have measured the actual temperature, maybe your thermistor is misreading. the thermistor is acurate, only -/+ 5 degrees as I also measured with my IR thermometer just incase, but 1 thing for sure with 12v the bed will never ever heat up to 100c that for sureby skelator - RAMPS Electronics
Quotedc42 The stepper motor drivers are constant-current and can take much higher voltages than 12V (AFAIR they are rated at 35V). The capacitors on the RAMPS board may be rated at 16V, 25V or possibly 35V depending on your board. A simple way to drop the voltage to the fans from 14V to 12V is to put three 1N4001 or similar diodes in series with them. ok noted I put some diode for the fans or maby skelator - RAMPS Electronics
ok did some check power getting to the heatbed is 11.5v power measured directly from the power supply are 11.85v not actually 12v or maybe it my multimeter but my Watt Meter does said it 11.85v so I guess my multimeter is correct, If I turn up my power to 14v I need to find a resistor to drop my voltage to 12v as I have a fans running directly from the 12v source not sure the can can handle 12vby skelator - RAMPS Electronics
Quotedc42 1. Measure the voltage appearing on the heat bed. If it is much lower than the 12V from your power supply, then you are losing too much in the cabling and/or the mosfet. Will do that when I get home but my heat bed is wired with 16AWG silicon wire normally used for RC Quotedc42 2. You didn't say what size the heated bed is. If it is about 200mm square then a resistance of 1.8 ohms isby skelator - RAMPS Electronics
Hi, I'm trying to figure out what when wrong here, I bought a aluminum heated bed from a local vendor here in my country but I can't seem to get it to heat up to 110c it just hover at 88c, some people suggested to change the mosfet which I did change it with this one IRLB8743PBF but it does not fix the problem, my setup currently using 12v 30A Led power supply and while heating I can confirmby skelator - RAMPS Electronics
Dear all, On my mendelmax it seem the Auto Level not compensate enough when printing first layer I can always hear my extruder making clicking sound which indicate the nozzle is blocked and it can't extrude plastic on certain part of the bed, It was working fine few days ago now after changed a new batch of filament it started to have this problem. Anyone know I can I debug this issues nozzleby skelator - Firmware - mainstream and related support