Anybody know anything about ESCs here?

Hi, I'm back

This'll be quick.

When an ESC's servo wires are hooked up to an Arduino or another 5v source, shouldn't it beep? Or does it have to be connected to a LiPo as well?

Thanks

The ESC needs to be connected to the motor power supply with the signal wire connected to the Arduino. The power supply GND should also be connected to the Arduino.

If that does not make sense then post a diagram showing how you have everything connected. Also, post a link to the datasheet or user manual for the ESC.

...R

That’ll suffice. Thanks Robin

Couldn’t find a datasheet about the ESC, although I found this XXD HW30A ESC Brushless Electric Speed Controller – Wholesale XXD HW30A ESC Brushless Electric Speed Controller for R/C Car + R/C Plane - Yellow + Red + Black SKU:182938 on ShopMadeInChina.com

So to clarify – the servo wire connects to the Arduino just like a servo, and the power wires to power supply

JeromeAriola:
So to clarify – the servo wire connects to the Arduino just like a servo, and the power wires to power supply

That sounds right. But I have no way of knowing if that short sentence means something different to you compared to what I get from it.

The Arduino servo pin should be connected to the signal wire in the 3-wire servo connector and the Arduino GND should be connected to the GND wire in the 3-wire connector. I don’t think the 3rd wire (if there is one) in the 3-wire connector should be connected to anything on the Arduino.

…R

JeromeAriola: Hi, I'm back

This'll be quick.

When an ESC's servo wires are hooked up to an Arduino or another 5v source, shouldn't it beep? Or does it have to be connected to a LiPo as well?

Thanks

Only if you have a motor connected i think. The bleep comes from the motor often.

Okay, I figured it out...

Last couple of days, I got too scared to test my ESC because of a plug spark (it's actually fine). Gathering enough courage, I tested it. I just had to do what I first thought (connect battery, connect motor, 3-wire to Arduino just like a servo...). It worked.

Thanks all for the help; I really appreciate it.

You should never drive the servo PWM pin unless the ESC is powered up, that risks burning out the micro-controller on the ESC.

The beep comes from the motor, always.

MarkT: The beep comes from the motor, always.

Local club took a duff one apart and it had a 'can' on it with a hole in it. Hole still had the protective sticker on it , on a similar working one seemed to do nothing. Totally baffled as to what it was for. No need for a barometric sensor on an ESC. He had four of them but not seen similar before or since.