As a builder for many years have a besic knowledge of electrical circuits. As an IT consultant I have a good idea when it comes to coding but currently to relieve boredom while recovering broadening my outlook. Previous experience building PCs, 3d Printer, CNC Router & converting Seig Mini Mill to CNC.
My problem I my vertical blinds to open & close automatically using a photo sensor open when light and close when dark easy with Arduino or Esp8266-01 etc but I think thats overkill.
I have 12v Relays controlled by photo sensor, I have put together a pair of 555 timers Monostable one shot running 3.5 seconds which with 60RPM geared motor gives me required 3.5 turns to close open my vertical blinds, tested individually all works fine.
Now I need to run + & - 5-12v from 2 x 555 timers to a single DC motor safely probably something obvious my old brain missing here so a nudge in the right direction would be handy, keep it simple its either age or the drugs or both but learning seem to get harder as I inch towards retirement!
built a H Bridge with 4x NPN3904 switched voltage fine to Multimeter but dropping to much power when applied to motor.
Motors just the £1 geared Arduino robot toy drives from Ebay plenty of torque & droping voltage not a problem either before or after Timers.
My problem I my vertical blinds to open & close automatically using a photo sensor open when light and close when dark easy with Arduino or Esp8266-01 etc but I think thats overkill.
I have 12v Relays controlled by photo sensor, I have put together a pair of 555 timers Monostable one shot running 3.5 seconds which with 60RPM geared motor gives me required 3.5 turns to close open my vertical blinds, tested individually all works fine.
Now I need to run + & - 5-12v from 2 x 555 timers to a single DC motor safely probably something obvious my old brain missing here so a nudge in the right direction would be handy, keep it simple its either age or the drugs or both but learning seem to get harder as I inch towards retirement!
built a H Bridge with 4x NPN3904 switched voltage fine to Multimeter but dropping to much power when applied to motor.
Motors just the £1 geared Arduino robot toy drives from Ebay plenty of torque & droping voltage not a problem either before or after Timers.