<![CDATA[H-Bridge PWM signal to Papst 4412 FGMPR Vent doesent spin Backward at 60% PWM ??]]>I´m new here, hello.
Can someone help me out how to use a H-Bridge to correct regulate the 0-40% and 60-100 % PWM Signal.
This Vent has the special Possiblility to Spin in both Directions, vorward and Backward with the correct PWM Signal.
Here is the Sheet to it:
https://docs.rs-online.com/d48e/A700000006464999.pdf
It sounds easy to just use 40% or 60% PWM Rate to get the Result.
But sadly, it doesent do what i want it to do.
I ended up now with sending the PWM signal, vs. not Pluging the PWM Signal at all.
This lets the Fan spin in the Opposit direction.
It´s confusing, i cannot understand what the Problem here is but it works now how i wanted it.

But what do i wrong ? Is it the wiring or the Setting, or the wrong Module ?
I need a PWM Module that can work in on a i2c A Hub, for the Possibility to regulate 4 Fans seperate with Individual settings.
Any recommendations for this task, what i can use for it ?

]]>https://community.m5stack.com/topic/6694/h-bridge-pwm-signal-to-papst-4412-fgmpr-vent-doesent-spin-backward-at-60-pwmRSS for NodeWed, 29 Apr 2026 12:47:45 GMTMon, 12 Aug 2024 20:21:27 GMT60<![CDATA[Reply to H-Bridge PWM signal to Papst 4412 FGMPR Vent doesent spin Backward at 60% PWM ?? on Fri, 23 Aug 2024 07:06:42 GMT]]>@teastain Hi teastain, thank you for your reply with this Informations. Sadly i thougt i need this H bridges, and bought them all. So now i use them with the possibility up to 10000 frequency. One Set of Vents would need 25000 frequency, but they work also with 10000. The others only need 2000-4000 frequency, and happy with the value it can deliver. And i have no idea how to use 5 set of Fan´s with the onboard PWM and different Values.
The Hub-B can deliver PWM, but i cannot choose the frequency, so i not try to use this device, because lower frequencys at 2000-5000 with the 25000 frequency Fans produce very noisy Fan Sounds. But at 10000 it is ok to hear.

On the End, i´m happy the Fans i have can be used with the M5stack H Bridge Units.

The next i need to do is, how to use Servos, to Automatically set the height of the Lamp.
But how i can Stop and Hold a Servo, also without a Power Source to hold the weight ?
Are there some M5stack Units and Servos i can use with a weight of 2-3kg ?
They should lift and securely stop lifting in a Range of 1 Meter.
I looked up some RC Winds and a Servo Unit, but the Most of them have no rachet stopper, and for now i have no idea what devices i can use easily for this task.

]]>https://community.m5stack.com/post/26203https://community.m5stack.com/post/26203Fri, 23 Aug 2024 07:06:42 GMT<![CDATA[Reply to H-Bridge PWM signal to Papst 4412 FGMPR Vent doesent spin Backward at 60% PWM ?? on Mon, 12 Aug 2024 20:39:12 GMT]]>@NoobCheck1 Connect the power and grounds to a sufficient power supply. No H bridge needed!
You fan works like a M5Stack 360 deg (Continuous) RC hobby servo.
Here is code.
https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Accessory/ServoKit180_360/Arduino/ServoKit180_360
I have not tried it but I have done 360 servos...and this is the M5Stack 360 example.
And a PbHub should work.

]]>https://community.m5stack.com/post/26063https://community.m5stack.com/post/26063Mon, 12 Aug 2024 20:39:12 GMT