Timeline for Marlin is restarting when pins 5 Vcc are enabled and has a servo motor connected (RAMPS 1.4)
Current License: CC BY-SA 4.0
10 events
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| Apr 22, 2021 at 12:07 | comment | added | wbrrtt | Yes, it's pretty confusing how it works. In the case of the PSU + USB working when the system (ramps + arduido) is started by USB, and later connecting the PSU to the rest of the system. If the system is directly connected by the PSU, it only starts when I add the USB. There really is a voltage drop, as mentioned by @Jiří Maier. I measured this drop | |
| Apr 22, 2021 at 12:00 | vote | accept | wbrrtt | ||
| Apr 17, 2021 at 17:45 | answer | added | Jiří Maier | timeline score: 3 | |
| Apr 15, 2021 at 7:31 | history | edited | 0scar♦ | CC BY-SA 4.0 |
Ramps -> RAMPS
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| Apr 15, 2021 at 6:44 | comment | added | Greenonline♦ | In addition, there seems to be a bit of confusing information: You state that PSU alone causes the issue but when USB is connected, it doesn't. You then go on to state that PSU+USB doesn't suffer the issue either. From which, one would infer that in the second case, that the printer is not powered by the PSU at all, and it powered by USB alone, which would seem to be impossible (unless you are referring to the Mega/RAMPS alone). In which case, it would seem that the PSU is at fault and not supplying the rated 30 A, nor even a fraction of that (which is what the Mega/RAMPS would require). | |
| Apr 15, 2021 at 6:28 | comment | added | Greenonline♦ | Intriguing... Just to clarify: If neither the BLTouch nor the servo are connected, does the same issue occur? If so, then those variables can be eliminated. If not, then the issue would seem to relate to something connected to the board's servo output. Do you have either a spare Mega 2560 and/or a RAMPS to swap them one at a time to see where the fault may lie? Just a random thought, maybe the system only works when the USB is connected because the additional current (1 or 2 A) provided by the USB "makes it work" - that is to say, maybe the PSU alone isn't sufficient? Seems unlikely. | |
| Apr 15, 2021 at 6:26 | history | edited | Greenonline♦ | CC BY-SA 4.0 |
List formatting for the states
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| Apr 11, 2021 at 21:24 | history | edited | 0scar♦ | CC BY-SA 4.0 |
Improved formatting
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| Apr 11, 2021 at 20:58 | review | First posts | |||
| Apr 11, 2021 at 23:32 | |||||
| Apr 11, 2021 at 20:56 | history | asked | wbrrtt | CC BY-SA 4.0 |