kk2 low voltage alarm

[jordster1998]

ok so i reciently built a tricopter and planed to use this low voltage alarm but to my dissapointment i found no way of hooking it up due to buying the y harness and i was wondering if any of you know how i could hook it up either through the y harness or through the charging lead or any other way
thanks jorrdan (jordster1998)

 

[ghost civic]

what does your LVA look like? the ones I have plus into the balance lead of a lipo.

 

[jordster1998]

im new to the multirotors so what does LVA mean ?

 

[xuzme720]

im new to the multirotors so what does LVA mean ?

low voltage alarm

 

[jordster1998]

oh ok yes i have one of them what i was on about was the low voltage alarm built within the kk2.1.5 board

 

[xuzme720]

If you have the KK2.1.5, it has stenciled right on the board where it hooks up and pay close attention to the polarity. Put positive voltage on the ground pin and you let out the magic smoke. Most people have been clipping the ground lead on the board to prevent this happening.
To be honest, I'm not sure what part of the alarm system you are asking about. How to set it up or connect it or what? Can you provide a picture of your power system so we can see what you are working with? Even a link to what you are using would help.

 

[ghost civic]

my bad, I thought you were talking about an external LVA.

pics please.

 

[jordster1998]

these are the pics of the voltage hook up on the board and the y harness i use to connect my tris power up

 

[jordster1998]

oh its ok no problem

 

[xuzme720]

What you need is a JST to plug into the header pins on the board that carries the full battery voltage to the pins.

So B3 on the board side with a B8 on the other end only using the outside pins. That will give you all 3 cells for the total battery voltage. Or, you can just add the JST wires into the distribution harness.

 

[jordster1998]

thank you so much for your help
thanks jordan (jordster1998)

 

[DDSFlyer]

Yeah adding a way to send the full voltage to the KK board via JST (B3) connector will give the KK board access to the actual voltage of your battery. Then hooking up the alarm buzzer or LED warning light will let you have the indication of where you set your alarm to go off. As for the magic smoke, on the KK2.1.5 they have supposedly fixed the reverse polarity problem killing your board.

 

[xuzme720]

Yeah adding a way to send the full voltage to the KK board via JST (B3) connector will give the KK board access to the actual voltage of your battery. Then hooking up the alarm buzzer or LED warning light will let you have the indication of where you set your alarm to go off. As for the magic smoke, on the KK2.1.5 they have supposedly fixed the reverse polarity problem killing your board.

They haven't actually fixed it, just marked it clearly on the board so you don't hook it up backwards.

 

[Balu]

What are the pros and cons of using the KK2 LVA vs. an externa LVA?

 

[xuzme720]

Weight is one pro for the KK2...the board is already there. It does not however monitor individual cells...con.

 

[DDSFlyer]

Took this info from the RC Groups page, that's where I thought they fixed the problem
"The only difference between the KK2.1 and the KK2.1.5 is that the KK2.1.5 has built in polarity protection and a fused output for the included buzzer"