This is how this happen? Come on, man, not every day you see such pages on an authoritative web design provider. https://themeforest.net/category/wordpress/?term=fake+taxi+anal+mix Would they do that on purpose or are they just compromised? Like, I've bought templates from themeforest before, never thought they'd promote this sort of pages.' ON 20170703@12:02:58 PM at page: On a web page you were interested in at: http://www.sxlist.com/Techref/language/java/script/validator_js.htm#42919.2211342593 James Newton[JMN-EFP-786] removed post 42919.2211342593 |Delete 'inga1987@gmail.com asks:
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Hello
Thanks a lot for this very nice project. I've built a linistep but used BD667s which have very similar characteristics as TIP122 except for a slightly lower maximum current. As diodes 1N4001s were used which i thought should be fast enough for the frequencies used here.
The stepper used is a Shinano Kenshi STH-39D213 with 200steps/5.2Ohm and is operated at 12V.
The correct wires were identified with a multimeter and the correct sequence with applying a small voltage at the 4 wires until the stepping sequence was correct.
The linistep does work so far but nowhere near optimal.At around 200 rev/min the stepper stops. I measured the current which the motor takes and it starts at about 0.3A at low speed and sinks below 60mA as the speed is increased.
The linistep is triggered by a NE555 circuit which generates impulses with near 50% duty cycle and up to 150kHz.
Does anyone see a problem with my setup? Any suggestions how to improve the performance?
I looked at the signals on pins 6 through 9 of the PIC. It was a square with 50% duty cycle on each of them. I would have thought that in 200 step mode each of the darlingtons should be switched on for 25% of the time, so the signals should have a duty cycle of 75% and not 50%. Is that correct?
Thanks a lot.
Metin
James Newton of Massmind replies: Sounds like a power supply problem. Check the current is more than double the per phase requirement and the voltage is at least a few volts more than the motors rated voltage. The 50% is due to high power half step mode.
ON 20170713@4:16:58 PM at page: On a web page you were interested in at: http://www.massmind.org/Techref/member/JMN-EFP-786/index.htm#42929.6784375 James Newton[JMN-EFP-786] Says /Techref/member/JMN-EFP-786/making_is_the_solution_to_job_loss_from_automation.htm Making is the Solution to Job Loss from Automation. ON 20170713@4:18:19 PM at page: On a web page you were interested in at: http://www.massmind.org/Techref/member/JMN-EFP-786/making_is_the_solution_to_job_loss_from_automation.htm# James Newton[JMN-EFP-786] edited the page. Difference: http://www.massmind.org/techref/diff.asp?url=\Techref\member\JMN-EFP-786\making_is_the_solution_to_job_loss_from_automation.htm&version=0 ON 20170714@2:03:06 PM at page: On a web page you were interested in at: http://www.piclist.com/Techref/idea/mc-heat-inject.htm#42929.8546527778 James Newton[JMN-EFP-786] published post 42929.8546527778 avitw01@yahoo.com.au
I believe that this concept has merits and you appear to have something that is worthy of further development. I have been looking into this concept for power generation for some time.ON 20170715@10:15:42 AM at page: On a web page you were interested in at: http://techref.massmind.org/Techref/member/JMN-EFP-786/index.htm#42931.4275694444 James Newton[JMN-EFP-786] Says /Techref/member/JMN-EFP-786/Music.htm Music ON 20170715@10:16:49 AM at page: On a web page you were interested in at: http://techref.massmind.org/Techref/member/JMN-EFP-786/Music.htm#42931.4283449074 James Newton[JMN-EFP-786] Questions: From the Netflix show Gypsy s1e1 unnamed song, no one seems to know who sang it.
I see you don't monetize your website, don't waste your traffic, you can earn extra cash every month because your content is high quality. If you want to know what is the best adsense alternative, type in google: murgrabia's tools
https://github.com/curiouspl2/linistepper-single_sided I did create single-sided PCB board along with flatcam project (flatcam is opensource isolation milling software) which is basically same as Patricio Oholeguy version except :ON 20170719@8:56:43 PM at page: On a web page you were interested in at: http://techref.massmind.org/Techref/member/JMN-EFP-786/Music.htm#42931.4283449074 James Newton[JMN-EFP-786] Replied to post 42931.4283449074 by JMN-EFP-786 |Insert 'Will you be a friend when you've played me? Will you be a friend? Will you let it end when you've played with me?' at: '' From the Netflix show Gypsy s1e1 unnamed song, no one seems to know who sang it.
-input headers are classic (step/dir/enable)
-there are no bridges
-optimized board to make it smaller
if you want to use eagle files - i did include transistor with no hole library you need to use manually (to make board smaller)
ON 20170719@9:16:03 PM at page:
On a web page you were interested in at:
http://techref.massmind.org/Techref/member/JMN-EFP-786/Music.htm#
James Newton[JMN-EFP-786] edited the page. Difference:
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ON 20170722@4:35:23 AM at page:
On a web page you were interested in at:
http://www.piclist.com/Techref/member/GK-4PCB-/index.htm#42938.1912384259
Gopal Kapuriya[GK-4PCB-] See also:
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ON 20170725@3:34:48 AM at page:
On a web page you were interested in at:
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Gopal Kapuriya[GK-4PCB-] Says
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ON 20170727@2:13:56 PM at page:
On a web page you were interested in at:
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James Newton[JMN-EFP-786] removed post 42836.7716782407
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