another ucWalker
@ September 7, 2010
| Attachment | Size |
|---|---|
| uc_top.jpg | 72.92 KB |
| uc_rear.jpg | 63.35 KB |
| uc_core.jpg | 73.45 KB |
| uc_wiring.jpg | 91.49 KB |
this is my first mono core bot.it is still in debugging.the front leg have modified and add spring.i will take some video later.
the source of ucWalker,http://www.beam-wiki.org/wiki/Wilf's_uCrawler ,thanks wilf.
-zang
@ Thu, 2010-09-09 09:35
...
I like your idea to use a cell phone battery.
@ Tue, 2010-09-07 10:44
cool,thanks for my request
cool,thanks for my request
@ Tue, 2010-09-07 01:33
what's the back port for?
what's the back port for?
@ Tue, 2010-09-07 09:03
it is charge port.i use a
it is charge port.i use a 3.6v 950mah cell phone battery.
@ Tue, 2010-09-07 09:49
Is your Charger circuit off board
Nice sleek looking walker you have there - video of it in action would be cool.
I use a lot of cellphone lipos in my robbots -
Q:- is your charger off board ?,
I ask this because i am looking for a simple safe way to do it. (ie in the robot), at present i have to remove the lipo and slap into my phone for recharge.
@ Tue, 2010-09-07 10:41
yes,the charger is off
yes,the charger is off board.i use a cell phone charger (4.4v 0.6A) with a modified DC plug.
cell phone battery has include voltage protect circuit,when charging reach 3.7v.the circuit in the battery will change to trickle mode.
@ Wed, 2010-09-08 13:47
so you can just charge such
so you can just charge such battery by connecting charger to its pins? no other electronics needed?
how can i find out, whether some battery had voltage protection circuit? because i have some spare older nokia batteries.
@ Thu, 2010-09-09 03:08
yes,i solder two wires on
yes,i solder two wires on the battery's + / - pins.no other electronics.the 4.2 to 4.4V charger can direct connected to the battery.the 5.0V charger have to connected in series with a 1N4007 diode.for my experience,the battery will get full charged around one hour.
becareful,li-Ion batteries may explode without protection circuit or the circuit loss control.my first choice is Ni-H cell phone battery,it is pretty safe.
@ Thu, 2010-09-09 06:21
You do realise that
You do realise that soldering to a li-ion battery could cause it to explode too?
@ Thu, 2010-09-16 09:38
If you have a temperature
If you have a temperature controlled iron it's not so risky, just use a high temperature and do it very quickly to prevent too much heat reaching the internals of the battery.
The datasheets for raw Lithium chemistry cells often state what the recommended soldering procedures are.