How to control Solenoids with Feather Huzzah / Breakout Huzz
Re: How to control Solenoids with Feather Huzzah
Re: How to control Solenoids with Feather Huzzah
franklin97355 wrote:What signals do the solenoids need to latch and unlatch? If you plan to use the Featherwing I would recommend the Feather HUZZAH instead of the breakout. You might also use the Feather M0 WiFi
Re: How to control Solenoids with Feather Huzzah
Re: How to control Solenoids with Feather Huzzah
Re: How to control Solenoids with Feather Huzzah
franklin97355 wrote:Featherwings will sit on the Feather boards without resorting to using jumpers. You will need some form of polarity control like a motor controller to provide reversed voltages.
Re: How to control Solenoids with Feather Huzzah
franklin97355 wrote:Featherwings will sit on the Feather boards without resorting to using jumpers. You will need some form of polarity control like a motor controller to provide reversed voltages.
Re: How to control Solenoids with Feather Huzzah
So I've got -- for now -- the Huzzah Breakout and an H-Bridge
Haven't gotten an motor controller yet.
The H-Bridge page says it can "control up to 4 solenoids". Is that 4 latching or non-latching solenoids?
Re: How to control Solenoids with Feather Huzzah
adafruit_support_bill wrote:"H-Bridge" and "motor controller" are the same thing. You don't need both.
adafruit_support_bill wrote:The H-Bridge page says it can "control up to 4 solenoids". Is that 4 latching or non-latching solenoids?
Can you post a link to where it says that? That is not an accurate statement for the DRV8871 H-Bridge that you linked above.
adafruit_support_bill wrote:Do you have a spec sheet for the solenoids you are intending to control? You need to understand the voltage and current requirements to make sure that you choose an H-Bridge that is capable of driving it.
Re: How to control Solenoids with Feather Huzzah
Brand / Model: EHCOTECH DDT-ML-4.5VDC
Inlet / Outlet Port Size: 1/2" Parallel Pipe Thread Voltage: 4.5VDC (operates up to 9.0 VDC)
Valve Body / Seal: Nylon / EPDM Rubber MPN
Valve Type: 2-Way, Magnetically Latching
Voltage: 4.5VDC (operates up to 9.0 VDC)
Operation: 50 ms (min) pulse opens valve / 50 ms pulse (min) with reverse polarity closes valve
Leads: 2 - 12" Electrical Leads
2.5 W power consumption at 4.5VDC
Re: How to control Solenoids with Feather Huzzah
adafruit_support_bill wrote:The L293D can drive up to 2 devices with the ability to change polarity - or 4 devices with no polarity change.
adafruit_support_bill wrote:The L293D is rated for up to 0.6A continuous, So you would be pushing the limits powering it with 5v. However, the solenoid only requires a 50ms pulse, so you should be OK if you keep the pulses short.
Re: How to control Solenoids with Feather Huzzah
Re: How to control Solenoids with Feather Huzzah
adafruit_support_bill wrote:Wiring for the L293D can be found here: https://learn.adafruit.com/adafruit-ard ... -reversing
Re: How to control Solenoids with Feather Huzzah / Breakout
• Does power need to be attached to L293D's pin 16?
How would non-latching solenoids change the wiring? Any references / advice greatly appreciated.
Assuming the L293D can control 4 non-latching solenoids, would that mean 4 solenoids each controlled independently, or merely 2 pairs of 2, the pairs independent of one another? (I'm only half-understanding the H-Bridge logic / 'full' vs 'half-H-Bridges' issue at this point)
Per your/Franklin's suggestion I'm looking at other motor controllers. For stacking I'm seeing the Stepper FeatherWing. Are there others I haven't found?
When does the issue of "PWM-capable GPIO Pins" into play?