Are any words really necessary here? 
9000… do I hear 9000mAh? 
That’s all good and well, but the one I posted will actually fit in our robots. 
what!..
No words necessary James…
I wanted to ask here what are the most popular regulators out there for 7.4vdc LiPo in, to 6.0vdc output, capable of delivering 10 amps? Working with Basic Micro for a solution. Looking for examples and for a wish list from users.
]Adjustable output from 5.5vdc to 6.5vdc./:m]
]Auto cut-off for LiPo minimum discharge voltage protection. /:m]
]Pretty blue power LED. /:m]
Feedback is welcome!
First complete charge/discharge cycle. The thing did better than advertised. 8432mA delivered! 8)
First, the regulator must be a switch regulator, not linear (to much waste of energy).
I believe I’ve mentioned the Turnigy regulators several times now.
I’ve been using them for several years now, and they seem to work ok.
But I would like to have an auto cut-off feature and also some sort of audio feedback when the voltage are getting close to critical. Adjustable threshold would also be great since some 2S LiPo’s allow discharge voltage down to 5,6v. And 10 amps continuously would be great!
Maybe adjustable output voltage up to 7,4v since a top charged 2S LiPo deliver <8,4 volt, I’m not sure if a high end digital 7,4 volt servo can handle a fully charged 2S LiPo ?
stop it!
It’s a tight fit… 8)
Oh my! … That looks REALLLLLY good!
Yeah I know, thanks for posting. I’m also looking for what others have used.
Thanks for the cool ideas. 8)
Here are a couple images of the 3DOF T-Hex. I did get the wires under control. I did get the foot switches installed, but not wired. I did make a windshield for fun. lol I still need to upgrade to aluminum servo horns. There is a video in the works. Hopefully a little better than the last one.
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Wow! You did a great job Jim. I’m not envy at all about that tiny LiPo…
…ok ok… That battery was just perfect for T-Hex. Where can I buy one?
Those led made the magic! Great pictures, looking very good!
BTW, How is the 4DOF version going?
I like Castle Creations switching regulator. Takes up to 25V in and 4.8 to 9V out at 10 amp peak. It comes factory-set at 5.1V which is perfect for my onboard camera. Adjustment is via ‘External USB interface’ sold separately.
I also like the MPI 6V reg, but I solder both set of leads-in together, to get the max current possible.
Wish List:
- Lipo CUTOFF!!! Noisy robots, remote piloting and too many blinky LEDs means any kind of warning device(s) do not always work.
- Inline power switch
- 10 amp continuous is nice
- No screw terminals please! Heavy Duty wire (16g min) soldered firmly to the board.
- Maybe reverse polarity protection.
- No hacking or additional purchase necessary to adjust output.
James got them from RC Planet.
Venom LiPo 2S 2P 7.4V 8000mAh 20C R/C Car $64.95
It’s waiting for me to finish this guy. I should be shooting a video this weekend and then I’m on to the the 4DOF version.
We tried the CC BEC 10 amp max output for a Phoenix, but it couldn’t cut it. It couldn’t make it past the inrush when turning the servos on.
Just wondering.
Are you thinking of recommending and/or selling some complete LiPo solutions, that include batteries, regulators and chargers? It would be nice to run the phoenix and T-Rex and … with just one battery. If I were to go with a LiPo I would for sure want some form of automatic shutoffs to be in place with the regulator(s). Also to be safe would you need an automatic shutoff to connect to VL or would the battery already be discharged below where VL would have shutoff anyway?
I have been cautious to use LiPo’s up till now but I have read that some of the newer LiPo technologies have reduced the fire and explosion risks, and there are some safety devices like bags that can contain the fire…
Kurt
I will never sell LiPo’s. But! I am looking into creating a Power Control Center…
Make it 3" x 2.3".
Have a small beeper / speaker and LED for an over discharge warning. Switch selectable for auto shut off.
Several status LED’s,
A voltage LED bar graph display.
Several power output ports (terminals)
2 6vdc 10amp regulated outputs. (one single 10 amp switching regulator)
2 Raw battery outputs.
2 5vdc 500mA outputs.
A heavy duty main power switch.
A couple relays driven from transistors, just have ttl pins for control.
Than all that would be needed is to add a battery connector to the terminal, and run wires, terminal to terminal to power up SSC-32, ARC-32, Bot Board II, Etc.
We’ve been running the T-Hex with this pack directly… It didn’t blow up the servos! lol It appears to be working as normal. I am planning a video shoot for Friday, it’s supposed to be nice and not raining. We will see how long that battery lasts. :mrgreen: