Battery Power

Help & Support Robot Parts
1

Ok 1st post and ontroduction by way of questions hope you all dont mind :wink: . Recently purchased a Botboarduino and PS2 controller for my biped build I need to power 17 MG996r Tower servos and also the Botboard which may entail adding SCC-32U wifi servo controller but if the Botboard can handle 18 servos then the added servo may be surplus to requirement. All I really want to know is what would be advised power for the Botboard alone and if SCC-32U is added i.e which battery packs are advisable for my project which will let me have enough juice for servos but still run the microcontroller. Ive looked at 6V nimh batteries and believe they would be sufficient but want to be utterly sure before going ahead and maybe frying my board or burning out servos. Any help will be greatly accepted and thankfully received .

2

The BotBoarduino cannot handle 18 servos, hence the need for the SSC-32U. Normal RC servos take 6V, so it’s really up to the capacity - higher capacity means the robot will last longer, but the pack will weigh more. It’s a compromise you will need to reach. Note too that hte discharge rate of the battery needs to meet the needs of all of your servos.

3

Thanks Coleman I was under the impression the botboard could handle 18 servos as its stated in the description , but on afterthought the presence of a PS2 controller will negate some of the pins so yes the add on card will be a necessity. I expect the drain to be extremely quick with 17 servos on constant draw so mah preferably would be in 5800mah nimh if i can configure for correct voltage. Thanks for the quick reply I will have plenty more questions of that I am sure so im absolutely thrilled the forum has so many people like yourself with the knowledge and know how . Thanks again any more advice will be most welcome

4

We’ll update the description. 18 servos is the max, but it causes confusion for practical applications. A 5800mAh battery will likely be on the heavy side - you might consider something in the 3000 to 3500 range (we use 2800mAh for Lynxmotion hexapods):
robotshop.com/en/6v-2800mah- … ttery.html