I am using the botboarduino and ssc32 with my biped I made
At the moment I’m powering the servos with the battery pack and the boards with the mini USB on the botboarduino from my pc
Which power interface do I need to connect the battery to and what jumpers do I need to set
To power all with the battery
Will 1 6v pack power all or do I need 2
At the moment it’s just 10 DOF (legs only)
But will probably be about 20 DOF later when I add arms and pan and tilt head
This should help:
lynxmotion.com/images/html/build185.htm
Take a look at sections 13, 15, 16 and 17 for power:
16. This is the VL (logic voltage) input. This input is normally used with a 9vdc battery connector to provide power to the microcontroller and anything connected to the 5vdc lines on the board. This input can be used to isolate the VL from the VS (servo voltage).
You can either use one 6V battery plus a voltage regulator (to step up the voltage going to VL) or one 9V battery to VL and the 6V to VS.
Actually I have run robots with this with only one 6v battery.
I know that the prototypes were built with LDO (Low Drop Off) regulators such as a: LD29150DT50R which is supposed to have something like .4v drop off, so as long as the voltage is above lets say 5.5v it should be able to output 5v. Not sure what the actual regulator that is used on the production boards, but the original intent was to allow them to run on 6v as the majority of Lynxmotion robots use servos that run at 6v.
Also I am not sure which Atmega328 is used in the current shipping boards, but the one I am looking at: Atmega328p-pu, looks like it can run with a voltage as low as 1.8v, some others maybe only as low as 2.7v. Note: there are some boards such as ones by Seeeduino that you can switch to run at 3.3v instead of 5v.
Kurt
Sorry, I am all confused. So if I don’t connect the VL to anything, will the board and servo work with only a 6v battery? Or does it need something else to run only from the 6v battery?
To run on one battery, you need to make sure the VS=VL jumper is in place. On a lot of smaller robots, should work fine. I have for example run the Brat with just one battery.
Kurt