Hi, so I decided I wanted to build a printer. I bought a lot of material over the last year and finally got down to finishing the design and building it. I can put it together now if I wanted too but before I did that I wanted to check movements in pronterface. before I get into the issue I will tell you my equipment
12V 30A PSU
Nema 17's x 5 (1 extruder 4 axes: 2Z 1X 1Y)
Ramps 1.4 + Arduino mega 2560
4 Stepper drivers DRV8825
14-22 AWG wires (the thicker gauges used on psu to board while thinner go to nema's etc..)
some fans and other things that don't matter as much as whats listed above.
my issue is that once I uploaded the most recent Marlin FW onto the Arduino, I tried it on pronterface and at first I got a few endstop messages like "hit endstop: X0.01" for example. so I don't know what I did but I tried moving the motors after either clicking the endstops with my hand and bam the motors started moving. the thing is that they were moving slow, so I was wondering if that was normal, I touched the heatsinks one by one to check the temp and remember how it felt. then I boosted the voltage intake from aroujnd .8A to 1.3A and the motors started moving a tad bit faster which wasn't what i wanted to see. so i went back into the Arduino IDE and changed the min/max movement of something like that from what i had set before (70) to something higher like (100). uploaded it to the board once again and tried to move the motors. this time the problem with moving them came up. I'm really tired so i didn't want to bother with figuring out what was wrong. so i clicked the 10mm x movement option, then the 100Y mm option and finally i clicked the homeY option and the printer moved, and this time it was faster but I'm not sure if it was a good speed but at least it moved. i then clicked the Xhome and it moved yet again and at the same speed as the Yhome. both looked like they had moved around 5-8mm fast. or at least it sounded fast. anyway, during this whole experiment i was checking the heatsinks to see how hot they were getting and to make sure they didn't blow like another one i accidentally fried because i raised the voltage too high( this happened yesterday and not during these test so there is no correlation, just for laughs). As i kept my finger on the heatsink, i noticed it became pretty hot. i could keep my finger on it but it was uncomfortable. after a few more moves the heatsink was too hot to keep my finger on but not to the point were it would burn me yet. the current flowing through was rated at about 1.3-1.5 on the X and Y axes. the Z axes was working and was only warm and it only had about .7A flowing to it. although under load i may have to raise it.
Ok, so what i want to do now is find out if the heat emanating from the drivers is normal, and if they could get hotter without blowing like my other driver. or is there a setting that i might have not input correctly or might have missed. (by the way, i have a 80x80 mm fan pointed at the ramps blowing from the side. the driver still gets hot which worries me. but this is my first build so i have no clue how hot things can get.
Also, in the config.h i opted to use the dummy thermistors for both hot end and heat bed. so i could check the motors instead. i didn't have the 12v/Gnd connections in place to avoid unnecessary wiring that i wasn't testing. only the motors, the drivers, the endstops and 1 fan were connected.
Thanks for your time whoever reads this.
12V 30A PSU
Nema 17's x 5 (1 extruder 4 axes: 2Z 1X 1Y)
Ramps 1.4 + Arduino mega 2560
4 Stepper drivers DRV8825
14-22 AWG wires (the thicker gauges used on psu to board while thinner go to nema's etc..)
some fans and other things that don't matter as much as whats listed above.
my issue is that once I uploaded the most recent Marlin FW onto the Arduino, I tried it on pronterface and at first I got a few endstop messages like "hit endstop: X0.01" for example. so I don't know what I did but I tried moving the motors after either clicking the endstops with my hand and bam the motors started moving. the thing is that they were moving slow, so I was wondering if that was normal, I touched the heatsinks one by one to check the temp and remember how it felt. then I boosted the voltage intake from aroujnd .8A to 1.3A and the motors started moving a tad bit faster which wasn't what i wanted to see. so i went back into the Arduino IDE and changed the min/max movement of something like that from what i had set before (70) to something higher like (100). uploaded it to the board once again and tried to move the motors. this time the problem with moving them came up. I'm really tired so i didn't want to bother with figuring out what was wrong. so i clicked the 10mm x movement option, then the 100Y mm option and finally i clicked the homeY option and the printer moved, and this time it was faster but I'm not sure if it was a good speed but at least it moved. i then clicked the Xhome and it moved yet again and at the same speed as the Yhome. both looked like they had moved around 5-8mm fast. or at least it sounded fast. anyway, during this whole experiment i was checking the heatsinks to see how hot they were getting and to make sure they didn't blow like another one i accidentally fried because i raised the voltage too high( this happened yesterday and not during these test so there is no correlation, just for laughs). As i kept my finger on the heatsink, i noticed it became pretty hot. i could keep my finger on it but it was uncomfortable. after a few more moves the heatsink was too hot to keep my finger on but not to the point were it would burn me yet. the current flowing through was rated at about 1.3-1.5 on the X and Y axes. the Z axes was working and was only warm and it only had about .7A flowing to it. although under load i may have to raise it.
Ok, so what i want to do now is find out if the heat emanating from the drivers is normal, and if they could get hotter without blowing like my other driver. or is there a setting that i might have not input correctly or might have missed. (by the way, i have a 80x80 mm fan pointed at the ramps blowing from the side. the driver still gets hot which worries me. but this is my first build so i have no clue how hot things can get.
Also, in the config.h i opted to use the dummy thermistors for both hot end and heat bed. so i could check the motors instead. i didn't have the 12v/Gnd connections in place to avoid unnecessary wiring that i wasn't testing. only the motors, the drivers, the endstops and 1 fan were connected.
Thanks for your time whoever reads this.