RAMPS 1.4 Servo not working
Posted by timo
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RAMPS 1.4 Servo not working October 18, 2013 04:42PM |
Registered: 10 years ago Posts: 13 |
Hey,
I have a RAMPS 1.4 and all works well when connected to both 12v and USB, but if I disconnect the USB the LCD screen light is flickering on and no text. I have checked and D1 is installed and I am running it from a 12v 30amp power supply. Any ideas what I should check? I have just been running off USB for a while now but I am trying to hook up a servo now and it isn't getting power and I think this is the cause.
Edit: I have LCD screen working now. I upped my 12v power supply up to output just over 15v and now the LCD screen works when USB is disconnected, but still no servo movement. So that may not be the problem. Any ideas why my servo is not moving? I have configured it in the firmware and I am using m280 p0 s60 command to try and move it but nothing. It is connected to D11.
Thanks
Tim
Edited 2 time(s). Last edit at 10/18/2013 07:54PM by timo.
I have a RAMPS 1.4 and all works well when connected to both 12v and USB, but if I disconnect the USB the LCD screen light is flickering on and no text. I have checked and D1 is installed and I am running it from a 12v 30amp power supply. Any ideas what I should check? I have just been running off USB for a while now but I am trying to hook up a servo now and it isn't getting power and I think this is the cause.
Edit: I have LCD screen working now. I upped my 12v power supply up to output just over 15v and now the LCD screen works when USB is disconnected, but still no servo movement. So that may not be the problem. Any ideas why my servo is not moving? I have configured it in the firmware and I am using m280 p0 s60 command to try and move it but nothing. It is connected to D11.
Thanks
Tim
Edited 2 time(s). Last edit at 10/18/2013 07:54PM by timo.
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Re: RAMPS 1.4 Servo not working October 18, 2013 10:41PM |
Registered: 14 years ago Posts: 1,092 |
The 5V output to the servos aren't directly connected to 5V, but to an input marked 5V next to the PS_ON input on the RAMPS board.
Because almost everything 5V runs off the regulator on the Arduino, it's possible to overload the regulator with too many devices
Supply the 5V input with 5V (preferably from a PC power supply) and your servos will work.
Because almost everything 5V runs off the regulator on the Arduino, it's possible to overload the regulator with too many devices
Supply the 5V input with 5V (preferably from a PC power supply) and your servos will work.
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Re: RAMPS 1.4 Servo not working October 18, 2013 11:36PM |
Registered: 10 years ago Posts: 13 |
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Re: RAMPS 1.4 Servo not working October 19, 2013 12:58AM |
Registered: 14 years ago Posts: 1,092 |
You don't need to cut D1.
The 5V pin for the Servos is completely disconnected from the Arduino.
If the servo has a very small current draw, you could use the Arduino to power it.
In this case, connect the pin marked VCC to the pin marked 5V. They're both next to the PS-ON input/reset switch.
You don't need to make any other change.
The 5V pin for the Servos is completely disconnected from the Arduino.
If the servo has a very small current draw, you could use the Arduino to power it.
In this case, connect the pin marked VCC to the pin marked 5V. They're both next to the PS-ON input/reset switch.
You don't need to make any other change.
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Re: RAMPS 1.4 Servo not working November 27, 2015 12:16PM |
Registered: 8 years ago Posts: 2 |
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