a5:automatic-control-the-cold-end-fan
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| a5:automatic-control-the-cold-end-fan [2018/07/06 16:41] – [Connection On MKS GEN_L Mainboard] aeket | a5:automatic-control-the-cold-end-fan [2020/12/25 02:13] (current) – external edit 127.0.0.1 | ||
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| - | ====== Under Construction ====== | ||
| - | |||
| ==== Automatic Control The Cold End Fan ==== | ==== Automatic Control The Cold End Fan ==== | ||
| Author: AETEK | Author: AETEK | ||
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| ==== Build The Circuit ===== | ==== Build The Circuit ===== | ||
| + | **Please pull the A5 mains connector**\\ | ||
| + | \\ | ||
| {{: | {{: | ||
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| {{: | {{: | ||
| + | This concludes work on the A5 hardware for this project. In order for the cooling system to work, the Marlin firmware has to be adjusted. | ||
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| - | This concludes work on the A5 hardware for this project. In order for the cooling system to work, the Marlin firmware has to be adjusted. | ||
| - | \\ | ||
| - | \\ | ||
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| ==== Customize the Marlin firmware ==== | ==== Customize the Marlin firmware ==== | ||
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| #define EXTRUDER_AUTO_FAN_SPEED | #define EXTRUDER_AUTO_FAN_SPEED | ||
| </ | </ | ||
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| The 30mm fans used by JGAURORA have the ability to run slowly and to develop the full speed after an operating time of about one minute. This must be taken into account when choosing the fan speed. If, after the modification, | The 30mm fans used by JGAURORA have the ability to run slowly and to develop the full speed after an operating time of about one minute. This must be taken into account when choosing the fan speed. If, after the modification, | ||
| Line 99: | Line 93: | ||
| For me, the default value of 150 works without problems. That's a good compromise between cooling performance and noise. \\ | For me, the default value of 150 works without problems. That's a good compromise between cooling performance and noise. \\ | ||
| - | Then upload the changed firmware to the A5 (instructions here in the WIKI).\\ | + | Then upload the changed firmware to the A5 ([[a5: |
| + | The 3D printer can now be reassembled. | ||
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| + | ==== Check The Proper Function ==== | ||
| - | === Do the second test === | + | - Insert mains plug. |
| + | - Power on the printer | ||
| + | - The Cold End fan (A5 upper fan) should not run yet. | ||
| + | - On the touch screen, set a nozzle temperature of 55°C and make sure that the fan switches on from a displayed temperature of 50°C. You can not rely on the ears. It is important that the fan turns on above 50° C. It then probably has a pretty low speed first. As mentioned, the speed increases within about a minute. This is not a consequence of the control, but a property of the fan. | ||
| + | - Wait a few minutes and evaluate the achieved cooling power. For me, the fan is still quietly audible but much quieter than before the modification. | ||
| + | - Choose a nozzle tempearture of 40 ° C and see if the Cold End fan turns off below 50 ° C. | ||
| - | For this test, the A5 does not need to be assembled. It can stay open.\\ | ||
| - | Please place the provisional circuit outside the metal chasis (see photo) to avoid short circuits.\\ | ||
| - | - Insert mains plug. | + | If everything reacts like that, then enjoy the silence.\\ |
| - | - Power on the printer and wait 10 seconds. | + | |
| - | - The **red** LED of the test circuit should light up and stay on. | + | |
| - | - Now power off the printer and unplug | + | |
| + | From now on, the fan always turns on and off automatically. This completes the conversion. :-D | ||
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| ---- | ---- | ||
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| - | Status 6. July 2018: Unfinished! More Content coming soon... | + | Status 6. July 2018: Completed |
a5/automatic-control-the-cold-end-fan.1530859274.txt.gz · Last modified: 2020/12/25 02:13 (external edit)
