Building the 18v2 tank

Yes please, i posted another mod also. I will do a touch sensor for you, give me a little time.

 

Get your wife going on this now that would be cool.

 

added links to OP

 

Sweet I like everything but your switch. I would have went with a proven, brand name one instead.

Digi-Key - EG4722-ND (Manufacturer - PV5S64011)

Digi-Key - EG4728-ND (Manufacturer - PV5S640NN)

 

Thanks for the link i am going to start using the second one in my mods

 

whered you get the box from?

 

Box is now in OP sorry forgot that one

 

I am ready to attempt to do this build, thanks to Dave and his generosity for giving me 99% of the necessary parts.

While that $3.38 Voltage Led indicator with free shipping is sold out on ebay, F00077 Voltage Indicator Checker Tester,LED Lipo 1S-6S Battery | eBay , I did manage to find one on Madvapes website although theirs is more than twice the price and I will have to pay shipping. Was also planning on using the chrome button Digi-Key - EG4728-ND (Manufacturer - PV5S640NN) that Biily posted and was wondering if Dave had any other suggestions as to what other items I should get from Digi-key before I place my order.

 

NEW LED LINK http://www.ebay.com/itm/RC-1S-6S-Lipo-Battery-Voltage-Indicator-Checker-Tester-2-8V-25-2V-/330694238863?pt=Radio_Control_Parts_Accessories&hash=item4cfee9a28f


That's all you will need, just remember to epoxy the top for extra strength and the sharpe marks on tape is to replace the positive battery end and the connection shelf placement. Just ask if you have any questions I will be happy to help.

 

Well FWIW Dave didn't really specify the caps he used, but they look like cans. TI's cap requirements and recommendations are a bit overwhelming (ESR, impedance). This cap though is right off their recommended list.

http://search.digikey.com/scripts/DkSearch/dksus.dll?vendor=0&keywords=EEUFC1E181&stock=1

Slightly big at 10 mm Dia. x 12.5 mm L, but name brand and cheap @ 48¢

You might also consider one of these for your next build.

http://search.digikey.com/scripts/D..._findchips0311_dkc_buynow&mpart=OKR-T/6-W12-C


@ docdave

Some loaded volts tests would be nice to establish the chips limits and what folks could expect from their atties of choice. The TI 04050 modders seem quite reluctant to show actual loaded volts.

After looking harder at your build I'm a bit confused as to the purpose of the mosfet.

 

The switch I use to fire the led is a small tactical switch with a low amp rating of about half a amp I use it for insurance

Will try to do some load test for you

 

Well FWIW the current draw through the switch will be determined by what is being switched, in this case those little meters only draw ~ 30mA of current, that is all that is required of that switch.

 

Keith, I really like the green & black design, beautiful!!!:funnyclapping:

 

Thanks, i was not sure what the led draw was. I thought it was a good idea to put them in due to i sold quite a few and did not want future headaches of fixing them.

I am not getting a large swing in voltage under load, about .1 volt increase on everything i have put on from 1.5 ohm to 3 ohm.

 

Thanks Kim, but this one is mine Keith is working on his now.

 

Docdave, sorry I meant to say Dave

 

Dave would this work with 14500 batts ?

 

Sorry I just saw this post, with the box that I used yes 14500 batteries would fit but a bit loosely