Arduino•2mo ago

yep, this would all work together

PPatrick yep, this would all work together

asm_x86•11/13/25, 9:49 PM

ok great, thanks

Idunknow•11/14/25, 4:54 AM

Hello good afternoonn

Idunknow•11/14/25, 4:55 AM

How do i connect my misting mpdule to my relay module?

Idunknow•11/14/25, 4:55 AM

JustRoz•11/14/25, 8:07 AM

twin

JustRoz•11/14/25, 8:07 AM

how do i conect hc05 to my phone?

JustRoz•11/14/25, 8:07 AM

i tried any posible way

JustRoz•11/14/25, 8:07 AM

tried using hc command it doesnt do allat

JustRoz•11/14/25, 8:07 AM

someone pls help meeee

JustRoz•11/14/25, 8:39 AM

i tried have tried to pair/connect it to my phone, but it doesnt pop up the password stuff when i click it, i couldnt even connect to it

JustRoz•11/14/25, 8:39 AM

somebody pls help me

Original message was deleted

pseud0•11/14/25, 4:34 PM

so you have this board?

Original message was deleted

PatrickOP•11/15/25, 3:48 PM

the image he sent was of a clone too

Gosb369•11/15/25, 8:02 PM

Anyone please help me

Gosb369•11/15/25, 8:03 PM

I want a camera module for Arduino UNO Q

Gosb369•11/15/25, 8:03 PM

How can i connect ?

Gosb369•11/15/25, 8:03 PM

Is the JMEDIA connector available ?

Gosb369•11/15/25, 8:04 PM

Where to buy ?

What Happens•11/16/25, 5:56 AM

Hey, im looking for a way to sense current for my electric gocart competition. I need to be able to measure both forwards and reverse current if possible. If been looking into a shunt resistor with an OpAmp but im not sure if this will be able to measure reverse current (I assume not). Any advice is appreciated

What Happens•11/16/25, 5:57 AM

60V, 2KW.

TrueNorth•11/16/25, 6:05 AM

so you will be charging it?
Generaly you would have 2 circuts, one for charging, forward,
One ofr discharging. forward.
Then if you needed to remove one, you wimple subtract the value.

TrueNorth•11/16/25, 6:06 AM

@What Happens

CoolBudy1•11/16/25, 8:02 PM

While using a dual h-bridge L298n dc speed controller, if I only want my motors to spin a certain way (one goes forward and the other goes backwards), can I wire a single IN pin to my mcu and then both EN pins? Then connect everything else to ground?

That way I can control the speed of each motor, but the direction will be fixed and tied together? Trying to learn ways to minimize wires going back to my MCU for smaller, simpler projects that dont need full control.

CCoolBudy1 While using a dual h-bridge L298n dc speed controller, if I only want my motors ...

PatrickOP•11/16/25, 8:16 PM

yes, you should be able to do this

PatrickOP•11/16/25, 8:17 PM

Control the EN pins separately and have one of the inputs from each motor tied together, with the other 2 connected to GND

PPatrick Control the EN pins separately and have one of the inputs from each motor tied t...

CoolBudy1•11/16/25, 8:30 PM

Oh okay, that makes sense. Appreciate the confirmation

CCoolBudy1 While using a dual h-bridge L298n dc speed controller, if I only want my motors ...

AnonEngineering•11/16/25, 8:35 PM

if you only want one direction ever you can just tie the IN pins to the right logic levels on the L298 and save the mcu pin

daraem•11/16/25, 8:46 PM

Hi, im trying to achieve low frequency sounds on a speaker by using the tone() function. With the speaker I have connected, anything below 250Hz does not sound, and above 250Hz is not low enough. Do I need to use an audio amp? or a different kind of speaker, thx

AnonEngineering•11/16/25, 8:52 PM

probably your speaker, Arduino

tone

tone

goes down to 31Hz as i recall

AAnonEngineering probably your speaker, Arduino `tone` goes down to 31Hz as i recall

daraem•11/16/25, 8:54 PM

ill try differents speakers then thx

AAnonEngineering if you only want one direction ever you can just tie the IN pins to the right lo...

CoolBudy1•11/16/25, 9:02 PM

So something like this? (And I apoligize for the ghost ping. Replied and then realized I forgot to hook up the empty IN pins to ground.

AnonEngineering•11/16/25, 9:03 PM

yes, that way all you need are the common ground and the EN pins running back and forth

CoolBudy1•11/16/25, 9:09 PM

Then to turn on and off, I'd just set EN to zero with pwm. Would using PWM to turn them on and off cause any problems compared to using the IN pins, or am I overthinking that portion of it?

And then just a generic question, if I want to swap the motor directions after I have everything setup, is there any difference between moving the 5v high over to IN2 instead of IN1 vs just reversing the OUT1 and OUT2 that goes to the motor?

TrueNorth•11/16/25, 9:23 PM

@CoolBudy1 tldr are you needing speed controll seperatly?

TTrueNorth @CoolBudy1 tldr are you needing speed controll seperatly?

CoolBudy1•11/16/25, 9:24 PM

Yeah. Its for a pair of flywheels. Once set, the direction will never change, but I want to be able to control their speed independently.

TrueNorth•11/16/25, 9:25 PM

Ok then yes your setup should be fine.

TrueNorth•11/16/25, 9:26 PM

If you burn out the motor driver then let us know and we can set it up better

TTrueNorth If you burn out the motor driver then let us know and we can set it up better

CoolBudy1•11/16/25, 9:30 PM

For future reference, what would cause the motor driver to get burned up in this scenario? If there is a safer wiring setup to prevent it I'd love to start with that version lol

TrueNorth•11/16/25, 9:32 PM

So are the motors normal dc motors?

CoolBudy1•11/16/25, 9:33 PM

Yeah.

280 Micro DC Motors

280 Micro DC Motors

is the item description.

TrueNorth•11/16/25, 9:35 PM

Ok so then you can get away from the enable pis all together and just use the in1-4 pins. This will lower the power consumption and heat by half

CoolBudy1•11/16/25, 9:37 PM

If I skip the EN pins, don't I lose the ability to control their speeds? Or is there a different way of doing that

TrueNorth•11/16/25, 9:39 PM

No. Enable pis are for breaking.

Think like your riding a bike or driving a car.

With enable high the breaks are released.
With enable low the breaks are on fully.

So imaging if you was in a car trying to drive and anytime you was NOT activly speeding up the breaks were automatically locked up..

TrueNorth•11/16/25, 9:41 PM

Instead put the jumpers back on the enable pins.
And just move the wires you have to the enable pis to the corect directional high pins leave the grounds tied together

TrueNorth•11/16/25, 9:41 PM

If im reading it right. 11 would go to in1, and 10 to in4.

TTrueNorth No. Enable pis are for breaking. Think like your riding a bike or driving a car...

CoolBudy1•11/16/25, 10:01 PM

Oh okay. Didnt realize the EN pin worked like that. I figured it was the opposite. If that is the case it probably is worth having some form of input pin control.

Since the direction wont change, and I just need to control on/off with the INs, I wonder then if I can merge them together and have say GPIO pin 10 split and feed both IN1 and IN 4. Then with a single pin I can turn on/off both motors.

TrueNorth•11/16/25, 10:04 PM

The two enable pis are for useing the driver with a stepper motor. You want all your pins set. THEN send it to the motor. This en pins

Integrator•11/17/25, 4:10 AM

.hello folks

Integrator•11/17/25, 4:11 AM

how are your arduinos diong this days?

TTrueNorth so you will be charging it? Generaly you would have 2 circuts, one for charging,...

What Happens•11/17/25, 5:23 AM

It'll be measuring current output of our Battery for an electric go-cart. I need to be able to measure reverse current as well because of motor breaking. Im not sure how itll work because even if an Op Amp can do reverse voltage I dont think ADCs can.

yep, this would all work together

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