I have been thinking more and more about getting either the Phoenix or CH3-R kit, but I can’t figure out where there is room for any significant battery on the Phoenix. With all those servos, I would imagine that even a 2800mAh pack won’t last much past 15 minutes. So, my question is - is there room for two of them, and where? The tutorial doesn’t mention the battery at all, and I am having a hard time visualizing it, other than just throwing it on top…
Thanks!
Polbit
Hi,
have you considered using LiPo battery?
I’m using a 4000 mAh 2s LiPo and Xan are using a 4900 mAh. It’s important to use a 6 volt switch regulator though. Making it all fit is a challenge but you can study our project threads : Project Phoenix and BlackWido.
The 4000 mAh LiPo I’m using are not for sale anymore, but I think you’ll find one when doing some searches. Just pay attention to the dimensions.
We use a 9vdc battery for VL and a 1600mAh pack inside the little guy. I expect the run time is around 9-10 minutes. We will add more detail to this part of the tutorial as soon as we can.
Using 7.4vdc LiPo is a good option but for the best operation requires a good switching regulator for 6.0vdc output. We used to carry some regulators but they were linear. I have heard good things about castle creations 10 amp switching regulator. I’ve ordered some to try. I may carry them soon.
Well, that can get expensive, as I don’t have a LiPo charger, so will need to buy all that, taking money away from the servo fund 
I guess I’ll have to think about mounting the batteries on top after all. If I use 645 servos for all joints, would that leave me with much additional payload, after two 2,800mAh packs?
Polbit
Honestly no. The Phoenix with those long sexy legs… that beautiful look costs you big in the torque department. I would strongly advise against using two Sub-C packs on it. It’s a situation where the added weight of the batteries to increase run time actually draws more current and can cancel out some of the benefits.
There’s always a trade-off with looks, isn’t there You are right, Phoenix looks awesome, even scared my wife when I showed a video of it to her… Decisions, decisions…
Polbit
i have a lithiumpolymere akku with 7.4V and 5600mAh its under the servo controller.
he is flat an it pass exactly.
greez
Did you see this Zenta? It even bigger then your freaking LiPo!
[size=167]LOL[/size]
[size=75]PS: polbit, sorry for hijacking your topic but I just had to say this… It’s a bit of a personal thing you know 
[/size]
[size=200]Argh![/size] 
I don’t believe it before I see it… Pictures please!
BTW, what brand, dimensions and where did you buy it Greez?
http://img88.imageshack.us/img88/3149/battery2ux2.jpg
This is the thing I bought, individual cell’s and soldered them together to make a 6 volt pack, I get around 45-1 hour although I haven’t actually charged it and ran it until it becomes drunk and wobbles to the ground yet… I still have to do that. Jim suggested that you use a 9v for the logic which is a good idea! I still haven’t tried that either but he informed me it would make the phoenix last a little longer
I’m not sure how much better the Lipos are compared to NiMh since its an older technology which I’m guessing the Lipo are a bit better, not sure about the cost though… the Lipo is kinda slick since the packs are rectangular and are a bit easier to slide in and out… although I don’t think Xan or Zenta take em out, probably mount them in pertinently…
the way you mount the Botboard 2 and the SSC32 you need to use shorter risers for the lower SSC32 mounting to allow you enough clearance to most likely fit any battery solution you go with.
Make a 6volt pack or hook up the beefy LIPO’s that hopefully wont explode… scary crap.
Hopefully you will get some good ideas from other photos and come up with your own creation…
Best of luck!
I know my individual 4700Mah cells are the highest capacity you can get in NiMh in the SubC style… I suppose you could mount D cells to it HAHA probably last long enough for your phoenix to walk to the moon.
http://photos-c.ak.fbcdn.net/photos-ak-snc1/v2675/240/73/1382948436/n1382948436_30301530_6843359.jpg
http://photos-d.ak.fbcdn.net/photos-ak-snc1/v2675/240/73/1382948436/n1382948436_30301531_6390806.jpg
http://photos-e.ak.fbcdn.net/photos-ak-snc1/v2675/240/73/1382948436/n1382948436_30301532_2717911.jpg
here there are any pictures.
im working on the body for the head.
u have enought place for the batterie, but this one costs about 120 dollar…
greez = greetings = salute =bye = liebe gruess = freundliche Grüsse= ciao a tutti
http://photos-b.ak.fbcdn.net/photos-ak-sf2p/v353/240/73/1382948436/n1382948436_30136361_3601.jpg
this was the first version. the new one has a Head.
humm crap, well it looks like that lipo is probably a better solution as its quite thin compared to the Sub-C cell’s…
what’s the head of that robot look like? you plan on using your own code or using the code that’s provided here for the phoenix’s
–Aaron
Hi t4ndu,
Thats a nice fit for the LiPo! It seem to be rather thick, whats the total height. What kind of regulators are you planning to use, and where to place them? On top of the LiPo?
I like your approach for the head . So it dosen’t get in conflict with the coxa and legs?
Looking forward to see more of this Phoenix project.
Hi T4ndu,
It’s getting a little bit off topic but I totally agree about the head approach! Did the SES part fit exactly or did you need to adapt it? Are you only planning to do 1DOF on the head? You should start a new topic for your phoenix!
Xan
a regulator… zenta sry but for what?
its only 7.4V
i doont need a regulator for that?
SSC board is for 9 Volt and the BB2 , too.
it works without regulator… i test it and it works fine.
or do u mean other part?
cheers t4ndu
xan , yes i creat a new topic for this part.
i want take your code. for a 2dof head. HeadTilt HeadPAn.
first time controll with a small part from your code with the PS2 Controller. Use R2 and Right stick to Controll only Head.
next i will take Flowbox VB code for facetracking and body movement.
But im not Happy with his code
Zenta. yes it works with the both legs on the Front.
but perhaps i must limit the angle from front legs.
Are you driving the servos (Hitec 645MG?) directly from the 2S LiPo ?! 
, without any 6 volt regualtor? When fully charged they deliver almost 8,4 volt and that is not recommended for the 645’s I think.
Did you do a real test on a running Phoenix too?
And no smoke so far? 
from lipo to the BB2 and parallel to the servocontroller --> to 645MG.
yes i test it real on the phoenix. its no problem but when i stress the servos they was hot. after any minutes. i make cooler for the servos for tiba an femur.
i will show u.
okay stop these here! i make another topic
