Where communities thrive


  • Join over 1.5M+ people
  • Join over 100K+ communities
  • Free without limits
  • Create your own community
People
Repo info
Activity
  • Dec 12 20:44
  • Dec 12 20:18
    dok-net synchronize #6804
  • Dec 12 19:55
    dok-net synchronize #6047
  • Dec 12 19:51
    dok-net synchronize #6902
  • Dec 12 19:50
    dok-net synchronize #6782
  • Dec 12 19:47
    dok-net synchronize #6857
  • Dec 12 17:56
    devyte labeled #6898
  • Dec 12 17:56
    devyte labeled #6898
  • Dec 12 17:56
    devyte milestoned #6898
  • Dec 12 17:53
    devyte synchronize #6898
  • Dec 12 17:53
    devyte closed #6894
  • Dec 12 17:52

    devyte on master

    fix for #6904: NodeMCU v1.0 boa… (compare)

  • Dec 12 17:51
    devyte closed #6904
  • Dec 12 17:51
    devyte closed #6905
  • Dec 12 17:51
    devyte edited #6905
  • Dec 12 17:50
    devyte edited #6905
  • Dec 12 17:09
    d-a-v closed #6901
  • Dec 12 15:57
    erdemuncuoglu review_requested #6905
  • Dec 12 15:31
  • Dec 12 15:09
    erdemuncuoglu opened #6905
Stavros Korokithakis
@skorokithakis
haha, hi @denman0000_gitlab
has anyone played around with small servos? why do they jitter so much when i try to drive them from the ESP?
den har
@denman0000_gitlab
@skorokithakis Hi .. sorry man I can't help there .. but maybe too much current drain ? maybe not sustained current ?
@skorokithakis Just a thought
Stavros Korokithakis
@skorokithakis
I don't think so, it just jitters while sitting there
thanks though
den har
@denman0000_gitlab
maybe its noise ? Perhaps feedback ? try pop a low drop diode into feed for servo ?
maybe a snubber circuit needed ?
I have in the past found that as an issue when driving mechanical relays ( they have a coli too) inductive load
Stavros Korokithakis
@skorokithakis
hmmm yes, i think it might be noise
i'll try mitigating that, thanks
den har
@denman0000_gitlab
saw this which might be an issue
esp8266/Arduino#4296
Stavros Korokithakis
@skorokithakis
that seems to be for a stepper
den har
@denman0000_gitlab
Try check the noise with a scope or drive from 12V (or other) battery
Stavros Korokithakis
@skorokithakis
I think I figured it out, because it's software PWM, the noise is crazy when you're connected to wiofi
wifi*
i'll try the ESP32, it might work better
den har
@denman0000_gitlab
Sorry Stavros .. got my wires crossed haha
Stavros Korokithakis
@skorokithakis
no problem man
den har
@denman0000_gitlab
wont caps and/or inductor help with that
Stavros Korokithakis
@skorokithakis
caps on the signal line?
or do you mean on the ESP power rail?
i think the timings are off because of the interrupts
den har
@denman0000_gitlab
electrolytic on supply before and after regulator
Stavros Korokithakis
@skorokithakis
i'll try that, definitely
den har
@denman0000_gitlab
and one or more tantalum or ceramics after 3,3v feed
supply > electrolytic cap > regulator > electrolytic cap > cermaic/polyerster/tantalum (not sure which type) the little blue ones worked well often for me on NRF24L01+
Stavros Korokithakis
@skorokithakis
i think the wemos alread has the ceramic one
den har
@denman0000_gitlab
and if i was driving relays I would pop in a tranny (bc547 or simlar) and a diode (and or snubber ( snubber good if you're driving inductive load especially from MOC or similar)
even if wemos have there may not be enough filtering
doesnt hurt when testing to pop a few extra in and scope the signal
Stavros Korokithakis
@skorokithakis
hm yeah
i don't have a scope though :/
Stavros Korokithakis
@skorokithakis
oooh very nice, thank you
den har
@denman0000_gitlab
just pop this string into google
snubber cirucit for inductive load servo
now would you like to get blown away ?
LOL look here
Stavros Korokithakis
@skorokithakis
ahaha what in the hell
that's amazing
den har
@denman0000_gitlab
I know dude .. Build one and share your project :-)
Stavros Korokithakis
@skorokithakis
i should!
i made a site for people to share projects on: https://www.makerfol.io/
but nobody wanted to :/
den har
@denman0000_gitlab
see that KEYCHAIN OSCILLOSCOPE ? heheh
Stavros Korokithakis
@skorokithakis
yeah wow
den har
@denman0000_gitlab
wellstart rounding up the peeps here .. we could always do GROUP PROJECTS too