These feeders are fantastic--I've been in feeder hell for way too long with this machine, can't believe it took me this long to find these and I'm definitely going to try and assemble a few. Also impressed by how snappy and tight you have the liteplacer running. Super cool.
Thanks! However i posted this on liteplacer forum almost a year ago and i wonder why you had not seen it earlier. I think you should try this feeder cos it has automatic film peeler: loonatec.com/pnp-semi-automatic-feeder/ Or maybe Mark's design: makr.zone/new-all-3d-printed-tapereel-feeder/399/
@@wormball Yeah, guess my search-fu isn't as good as I'd hoped. I kept considering doing the 0816 feeders, and may do so in the future, but the complexity of the things had me procrastinating. Thanks for the extra links, would definitely like the auto-peeler.
o love this projects.. is seems we aiming to singularity wher regular tech lead us to class3 compilance tech for cheap :)) soon we prodice own chips and etc,, coz will be ez,,.
Hello! Unfortunately it can not work with 0402 cos it does not have enough precision, and even if it had, it would leave half of the parts on the tape cos it can pick only 1 part per hole.
У меня нет, зато люди изобрели автоматическое сдирание плёнки: loonatec.com/pnp-semi-automatic-feeder/ makr.zone/new-all-3d-printed-tapereel-feeder/399/ Я было хотел подправить геометрию и заодно пририсовать сдиратель из первой ссылки, но лень-матушка не позволила, да и с роботом меня разлучили.
Hi Very nice video! Did you run it at the 72m/min and same yerk/acceleration as tested in the previous video? I'm just asking because I since had to tune down on acceleration because the larger parts would otherwise shift on the nozzle. So it seems that upping the speed is not actually going to work unless I can increase the vacuum as well. _Mark
Hello! I am running at about 66/38 m/min and 7000 jerk (i replaced X axis pulley with 30-toothed one). I do not place very big parts, but A-sized tantalum capacitors and 6*6 QFNs seem to stick well. My vacuum is about -0.4 bar (stock pump).
@@wormball Thanks! I guess the 3rd order motion of the TinyG is actually even more important than I thought! I should really try and integrate that into Smoothieware... github.com/synthetos/TinyG/wiki/Jerk-Controlled-Motion-Explained _Mark
@@markmaker4345 Honestly i do not think it is so important. Otherwise it would be everywhere already. Notice that with equal maximum acceleration "jerk controlled" motion has about half the acceleration of "conventional" movement, so you should compare its "benefits" (less vibration etc.) to the case when the acceleration is set to half maximum. Moreover, if we set and obey maximum jerk, small movements will be performed with very low accelerations cos you have not enough time for acceleration to reach reasonable value. And i suspect that the tinyg actually violates this law for small movements (and maybe even for all movements). I think the right way is to measure maximum acceleration vs velocity curve (and also maximum deceleration vs velocity) and set the instant acceleration to what the curve says at current velocity. So you can do small movements with high acceleration and reach the speeds at which high acceleration can not be achieved.
@@wormball Agreed, it seems TinyG has a simple "jerk only" model (at least that's my take from since studying the source code quickly). The ideal machine would have all three: maximum jerk, maximum acceleration, maximum feedrate. So a typical movement would involve 1. a quick constant jerk phase, until maximum acceleration is reached, 2. a constant acceleration phase, 3. a negative constant jerk phase, until acceleration is zero. 4. a cruising phase at the chosen feedrate, 5. a negative constant jerk phase, until the maximum deceleration is reached, 6. a constant deceleration phase, 7. a constant jerk phase to stillstand. TinyG does not have 2. and 6. so you need to limit the yerk unnecessarily in order not to have too large accelerations/decelerations there that your steppers can't take. Which gives you slow short moves unfortunately. Just for reference, Smoothieware does not have 1, 3, 5, 7 instead. > Otherwise it would be everywhere already. Well it's not so easy to implement in these small MCU controllers, I believe. _Mark
@@borisnori5546 Какого именно? Я и так уже всё поупрощал. Ежели вы ещё что-то упростите - я буду только счастлив. Кстати говоря, Nata Fole - это часом не вы?
![My New Pick & Place Machine [Liteplacer]](/img/n.gif)
Классный механизм подачи ленты с SMD! Ну и спасибо за плейлист ультра :)
that feed design is ingenious
These feeders are fantastic--I've been in feeder hell for way too long with this machine, can't believe it took me this long to find these and I'm definitely going to try and assemble a few.
Also impressed by how snappy and tight you have the liteplacer running. Super cool.
Thanks! However i posted this on liteplacer forum almost a year ago and i wonder why you had not seen it earlier. I think you should try this feeder cos it has automatic film peeler: loonatec.com/pnp-semi-automatic-feeder/ Or maybe Mark's design: makr.zone/new-all-3d-printed-tapereel-feeder/399/
@@wormball Yeah, guess my search-fu isn't as good as I'd hoped. I kept considering doing the 0816 feeders, and may do so in the future, but the complexity of the things had me procrastinating. Thanks for the extra links, would definitely like the auto-peeler.
This guy is living in 2100 and we're all still in 2020
Классные фидеры, Дима!
спасибо
o love this projects.. is seems we aiming to singularity wher regular tech lead us to class3 compilance tech for cheap :)) soon we prodice own chips and etc,, coz will be ez,,.
very cool..!! Does it use with RC-0402 part..?
Hello! Unfortunately it can not work with 0402 cos it does not have enough precision, and even if it had, it would leave half of the parts on the tape cos it can pick only 1 part per hole.
Cool!
Добрый день! Глупейший вопрос, какой это тип фидера в openpnp? :)
Что-то давно вы не выкладывали новое видео, есть какие-то новшества?
У меня нет, зато люди изобрели автоматическое сдирание плёнки: loonatec.com/pnp-semi-automatic-feeder/ makr.zone/new-all-3d-printed-tapereel-feeder/399/ Я было хотел подправить геометрию и заодно пририсовать сдиратель из первой ссылки, но лень-матушка не позволила, да и с роботом меня разлучили.
Hi
Very nice video!
Did you run it at the 72m/min and same yerk/acceleration as tested in the previous video?
I'm just asking because I since had to tune down on acceleration because the larger parts would otherwise shift on the nozzle. So it seems that upping the speed is not actually going to work unless I can increase the vacuum as well.
_Mark
Hello! I am running at about 66/38 m/min and 7000 jerk (i replaced X axis pulley with 30-toothed one). I do not place very big parts, but A-sized tantalum capacitors and 6*6 QFNs seem to stick well. My vacuum is about -0.4 bar (stock pump).
@@wormball Thanks!
I guess the 3rd order motion of the TinyG is actually even more important than I thought! I should really try and integrate that into Smoothieware...
github.com/synthetos/TinyG/wiki/Jerk-Controlled-Motion-Explained
_Mark
@@markmaker4345 Honestly i do not think it is so important. Otherwise it would be everywhere already. Notice that with equal maximum acceleration "jerk controlled" motion has about half the acceleration of "conventional" movement, so you should compare its "benefits" (less vibration etc.) to the case when the acceleration is set to half maximum. Moreover, if we set and obey maximum jerk, small movements will be performed with very low accelerations cos you have not enough time for acceleration to reach reasonable value. And i suspect that the tinyg actually violates this law for small movements (and maybe even for all movements).
I think the right way is to measure maximum acceleration vs velocity curve (and also maximum deceleration vs velocity) and set the instant acceleration to what the curve says at current velocity. So you can do small movements with high acceleration and reach the speeds at which high acceleration can not be achieved.
@@wormball Agreed, it seems TinyG has a simple "jerk only" model (at least that's my take from since studying the source code quickly).
The ideal machine would have all three: maximum jerk, maximum acceleration, maximum feedrate. So a typical movement would involve
1. a quick constant jerk phase, until maximum acceleration is reached,
2. a constant acceleration phase,
3. a negative constant jerk phase, until acceleration is zero.
4. a cruising phase at the chosen feedrate,
5. a negative constant jerk phase, until the maximum deceleration is reached,
6. a constant deceleration phase,
7. a constant jerk phase to stillstand.
TinyG does not have 2. and 6. so you need to limit the yerk unnecessarily in order not to have too large accelerations/decelerations there that your steppers can't take. Which gives you slow short moves unfortunately.
Just for reference, Smoothieware does not have 1, 3, 5, 7 instead.
> Otherwise it would be everywhere already.
Well it's not so easy to implement in these small MCU controllers, I believe.
_Mark
Класс.
Осталось только придумать, как сделать чтобы на защитную пленку не нужно было грузики вешать, а что то более технологичное.
Да всё уже придумано десять раз, надо только сделать. github.com/alexavr2/alexfeeder#protective-film-pulling
признайтесь чесно, лень ломать голову над упрощением данного элемента?
@@borisnori5546 Какого именно? Я и так уже всё поупрощал. Ежели вы ещё что-то упростите - я буду только счастлив. Кстати говоря, Nata Fole - это часом не вы?
А как вы пасту наносите?
трафаретом ru-radio-electr.livejournal.com/1440131.html