Running a mega2650 R3 and a ramps 1.4 - installed marlin to mega. win7 see the mega on com5. Then added the ramps and hooked it up via USB to win7. Repetier connects but I can't control anything. On the ramp I don't see the LEDs next to the power output flashing. BAD BOARD? Any help would be great. https://reprap.org/forum/read.php?1,690135,690135#msg-690135 Mon, 11 May 2026 01:35:05 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?1,690135,692740#msg-692740 https://reprap.org/forum/read.php?1,690135,692740#msg-692740 zerodameaon General Fri, 29 Jul 2016 20:31:53 -0400 https://reprap.org/forum/read.php?1,690135,692620#msg-692620 https://reprap.org/forum/read.php?1,690135,692620#msg-692620
What's your setup? Is this a new build, a repair? The best I can offer is try a new thermistor or swap the hotend with the bed thermistor.]]> othoap General Fri, 29 Jul 2016 11:35:34 -0400 https://reprap.org/forum/read.php?1,690135,691906#msg-691906 https://reprap.org/forum/read.php?1,690135,691906#msg-691906
thanks, that did it. I'm now talking to the ramps. Side note "nebbian" I could not get repetier to work but pronter did, thanks. I so many people run tests with only just one stepper hooked up and nothing else. I hooked up everything but the power to the hotend and bed and then it worked. I still don't see the two LED TX and Rx flicker but it works.]]> othoap General Tue, 26 Jul 2016 17:21:07 -0400 https://reprap.org/forum/read.php?1,690135,691698#msg-691698 https://reprap.org/forum/read.php?1,690135,691698#msg-691698
all movement is suspended until that is fixed

This is the controller not able to read the thermistor on the hotend. This is normally a open circuit on the thermistor cable somewhere

This is a safety feature... you have to have the thermistor plugged in.]]> Dust General Mon, 25 Jul 2016 23:03:46 -0400 https://reprap.org/forum/read.php?1,690135,691697#msg-691697 https://reprap.org/forum/read.php?1,690135,691697#msg-691697
here's the out of pronter:

Connecting...
start
Printer is now online.
echo:Marlin 1.1.0-RC6
echo: Last Updated: 2016-04-24 12:00 | Author: (none, default config)
Compiled: Jul 25 2016
echo: Free Memory: 5212 PlannerBufferBytes: 1232
echo:Hardcoded Default Settings Loaded
echo:Steps per unit:
echo: M92 X80.00 Y80.00 Z4000.00 E500.00
echo:Maximum feedrates (mm/s):
echo: M203 X300.00 Y300.00 Z5.00 E25.00
echo:Maximum Acceleration (mm/s2):
echo: M201 X3000 Y3000 Z100 E10000
echo:Accelerations: P=printing, R=retract and T=travel
echo: M204 P3000.00 R3000.00 T3000.00
echo:Advanced variables: S=Min feedrate (mm/s), T=Min travel feedrate (mm/s), B=minimum segment time (ms), X=maximum XY jerk (mm/s), Z=maximum Z jerk (mm/s), E=maximum E jerk (mm/s)
echo: M205 S0.00 T0.00 B20000 X20.00 Z0.40 E5.00
echo:Home offset (mm):
echo: M206 X0.00 Y0.00 Z0.00
echo:PID settings:
echo: M301 P22.20 I1.08 D114.00 C100.00 L20
echo:Filament settings: Disabled
echo: M200 D3.00
echo: M200 D0
Error:MINTEMP triggered, system stopped! Heater_ID: 0
[ERROR] Error:MINTEMP triggered, system stopped! Heater_ID: 0

Error:Printer halted. kill() called!
[ERROR] Error:Printer halted. kill() called!]]> othoap General Mon, 25 Jul 2016 22:48:45 -0400 https://reprap.org/forum/read.php?1,690135,691021#msg-691021 https://reprap.org/forum/read.php?1,690135,691021#msg-691021
Yeah, I was wondering about repetier being the cause of my issues. The old control board that I'm replacing was not an arduino and it's firmware was stuck using repetier 1.06. I was really looking forward to upgrading to the latest RH with this rebuild I'm doing on my 3d printer. I just wish I could get the RAMPs to respond.

thanks for the input PDBeal]]> othoap General Fri, 22 Jul 2016 12:05:17 -0400 https://reprap.org/forum/read.php?1,690135,691015#msg-691015 https://reprap.org/forum/read.php?1,690135,691015#msg-691015 PDBeal General Fri, 22 Jul 2016 11:40:45 -0400 https://reprap.org/forum/read.php?1,690135,690997#msg-690997 https://reprap.org/forum/read.php?1,690135,690997#msg-690997
Oh! will download Pronterface and try, thanks]]> othoap General Fri, 22 Jul 2016 10:24:30 -0400 https://reprap.org/forum/read.php?1,690135,690886#msg-690886 https://reprap.org/forum/read.php?1,690135,690886#msg-690886 nebbian General Fri, 22 Jul 2016 01:46:10 -0400 https://reprap.org/forum/read.php?1,690135,690768#msg-690768 https://reprap.org/forum/read.php?1,690135,690768#msg-690768 www.youtube.com]]]> othoap General Thu, 21 Jul 2016 13:00:22 -0400 https://reprap.org/forum/read.php?1,690135,690767#msg-690767 https://reprap.org/forum/read.php?1,690135,690767#msg-690767 othoap General Thu, 21 Jul 2016 12:59:14 -0400 https://reprap.org/forum/read.php?1,690135,690764#msg-690764 https://reprap.org/forum/read.php?1,690135,690764#msg-690764 othoap General Thu, 21 Jul 2016 12:58:12 -0400 https://reprap.org/forum/read.php?1,690135,690402#msg-690402 https://reprap.org/forum/read.php?1,690135,690402#msg-690402
Thanks for the help. Driver in correctly, will need to check limit switches polarity.]]> othoap General Wed, 20 Jul 2016 11:51:19 -0400 https://reprap.org/forum/read.php?1,690135,690241#msg-690241 https://reprap.org/forum/read.php?1,690135,690241#msg-690241 or endstops wired from +5v to gnd shorting out the board]]> Dust General Tue, 19 Jul 2016 22:59:48 -0400 https://reprap.org/forum/read.php?1,690135,690135#msg-690135 https://reprap.org/forum/read.php?1,690135,690135#msg-690135
Repetier connects but I can't control anything. On the ramp I don't see the LEDs next to the power output flashing. BAD BOARD?

Any help would be great.]]> othoap General Tue, 19 Jul 2016 21:21:52 -0400