My first box build

[Surreal Vapist]

I just got done putting in the voltmeter today, but it's off because in order to get an accurate reading with a MOSFET, you need to connect directly to the batteries, which requires a switch that I don't have :/ still, I'm super stoked this is done, the clouds and flavor are out of this world!

 

[drfwd]

Nice! Hopefully one day I'll feel comfortable building my own.

 

[Robino1]

Moved to the Modding Forum

 

[thetrucker]

This is really cool for your first box mod---way ahead of my first..good job

 

[g2shuck]

I just got done putting in the voltmeter today, but it's off because in order to get an accurate reading with a MOSFET, you need to connect directly to the batteries, which requires a switch that I don't have :/ still, I'm super stoked this is done, the clouds and flavor are out of this world!
View attachment 410466

You can't just wire the voltmeter into the fire switch?

 

[Surreal Vapist]

You can't just wire the voltmeter into the fire switch?

The fire switch is wired into the MOSFET so it doesn't handle the 20A, so you'll still get an inaccurate reading because of the resistor I believe. A 3-wire is needed I think

 

[g2shuck]

This is how I was shown to do it with a n channel mosfet.

 

[rhelton]

Nice, and I wired mine like that diagram posted, my voltmeter has a adjustment nut on the back so I adjusted mine to a known meter I attached to the 510. Its the first little meter I have seen that you can adjust it to read right ill look for the part number if anyone wants it.

Here it is, if you look at the pic of the back of it there is a phillips head on the back so you can adjust it accurate to a full charged cell @ 4.2 so it reads correct pretty nice.

28 Mini Voltmeter 2 Wire Great for Box Mods | eBay