Running a tracer on a 7.4v LiPo?

[jonny lovegrove]

Re: Running a tracer on a 7.4v LiPo?

Okay it seems i am making this thread into my own place of documentation, so actual circuit diagram AWAY!
obviously i am generalising the tracer down as a switch and UV Led, and skipping everything else out, but the point stands.

[jonny lovegrove]

Re: Running a tracer on a 7.4v LiPo?

Not everything arrived today. But mini 7.4 lipo :D

[sparrowhawk]

Re: Running a tracer on a 7.4v LiPo?

looking good so far

[jonny lovegrove]

Re: Running a tracer on a 7.4v LiPo?

Ive got the last of the parts, ill finish it tonight/ tomorrow.

[jonny lovegrove]

Re: Running a tracer on a 7.4v LiPo?

Bit messy, as i didnt get big enough heat shrink to cover the L7806, so glue gun, just to prevent any shorts.

[jonny lovegrove]

Running a tracer on a 7.4v LiPo?

Project complete.
Answer: YES.

[Pepperisit]

Re: Running a tracer on a 7.4v LiPo?

Very nice work mate, what did the total come to? excluding the tracer unit and silencer of course

[jonny lovegrove]

Re: Running a tracer on a 7.4v LiPo?

About the price of four decent Rechargeable AAAs
Capacitors: £2 (for 4)
Deans are about 50p a pair
Wiring is about a quid for a metre
The two lipos were £6.50
And the L7806 are £1 for a pair

So about £11
Although being electrical products on ebay, i have enough spares bar the lipos to make another one.

[PureSilver]

Re: Running a tracer on a 7.4v LiPo?

Very nicely done, thanks for the write-up and the circuit diagram!

[jonny lovegrove]

Re: Running a tracer on a 7.4v LiPo?

one thing i will say, drop a bit of glue over the positive and negative terminals on the PCB, as ive grabbed the things twice now while putting it back in the suppressor and you get quite a jolt off the circuit!

[Pepperisit]

Re: Running a tracer on a 7.4v LiPo?

I'd probably have heatshrinked the entire pcb. or electrical tape for protecting it as much as myself :p

[jonny lovegrove]

Re: Running a tracer on a 7.4v LiPo?

I'd probably have heatshrinked the entire pcb. or electrical tape for protecting it as much as myself :p

well i was intending on doing so, but the HS STILL hasn't turned up yet...

[jonny lovegrove]

Re: Running a tracer on a 7.4v LiPo?

Right, a bit of a progress update. Been using it a few months now, basically the little lipos dont last long enough. So with a bit of 10mm brass pipe and a few mins ive extended the tracer the length of the suppressor, and pulled all the foam out. As the PBS is the perfect length to fit a VP 1450 7.4 in. Now she works a treat, trialling for longevity on sunday.