Hi…I have about 3-4 feet of rbg led strip lighting…I’ve been running them of a 9v battery…but I saw a 1300 mah 12 rechargeable battery…I was wondering if the 12 v would be too much for them…and how long it would last compaired to the 9v…the 9v usually lasts a few hours super bright then starts to lose brightness…and thank you…an e mailed response would be better in case I can’t find this site again
@Hey Your RGB Led Strip should have a voltage rating. You can check the datasheet of your Led strip. Applying above the rated supply voltage might damage your LEDs.
I am building a vehicle which will be driven by 6 Pololu 20.4:1 Metal Gearmotors High Power 12v (https://www.pololu.com/product/3203). They quote 300mA (max) free-run and 5.6A stall (!). The vehicle will have a Raspberry Pi (v3), probably other controller board(s). How do I work out the battery requirements and which type would be most suitable? Pololu recommend keeping well within the stall current - how would I achieve that?
Hi i need your advice on battery power for my son first build of unmanned surveillance track vehicle. The chassis is a Dagu Multi Chassis Tank Vsrsion (sparkfun.com/products/12091), using a Dimension Engineering Sabertooth 2x5 RC controller, a Frsky 8 Channel receiver, 4 servo running on 2 channel (2 servo each channel) in receiver via a ‘Y’ servo cable to create a synchronized movement… they are, 2 servo for Pan & Tilt Camera (Camera and VTX transmitter for FPV power by standalone 2s lipo), 2 servo for Pan & Tilt Searchlight (searchlight LED power to be drawn form main battery via balance plug powering the controller and motors).
The motor that came with the chassis is the DG01 48:1 (sparkfun.com/products/13302), my son decision is to go the Lipo battery route since he have a couple of 2s and 3s lipo from RC cars and Drones.
Our doubt and question here is, can we use a 3s 11.1v 2200mAh 35c lipo and not risked toasting the motors (DG01D) ? If not possible what are the recommended lipo size? These type of motors are faily new to use. Please advice.
Your kind help is very much appreciated.
Thank you,
Allan
@Allan The motor you link to is 4.5V nominal, so a 3.7V LiPo might work for the motor, but likely not for the receiver, and not for the servos (pan/tilt). An 11.1V might burn the motors and will certainly burn the servos in the pan/tilt. A 7.4V LiPO has a good chance of burning the servos. You really should use a 4.8V rechargeable NiMh battery pack.
I want to control two 12v DC motor for 30 minutes which battery do you suggest
@ASHOK That is the point of this article. In terms of voltage, you can choose a 12V NiMh, 12V lead acid or 11.1V. However, your motor may have a nominal voltage range, meaning you might not need exactly 12V. Next, you need to determine the average current consumption of the motors in order to get an idea of the battery’s capacity. Last, you need to know the maximum current consumption to know the max. discharge rate of the motor.
I’ve got myself a Zumo chassis with a couple of 6v geared motors, and was hoping to use a LiPo or something rather than AA. Ideally a solution where I can also power a Pi Zero W too.
Really want to avoid having two sets of batteries. Any suggestions? Don’t mind what extra I may need, as long as I can get a good capacity/runtime.
I just want to make a drone with coreless motors which is of 3.7v each can U please suggest me the type of battery for both motors and RF receiver of 433 MHz
my robot consist a servomotor,ultersonic ,ardunio uno and l293D which one of two method i should use
@Chris You’ll need to check if the motors you purchase are tolerate to 7.4V (2S LiPo). If not, you’ll need a voltage regulator. Since the Pi is meant to be powered at 5V, you’ll need a 5V, preferably 2A+ voltage regulator: https://www.robotshop.com/en/50vdc-regulators.html
@CH rajesh It is incredibly rare that we see 1S (3.7V LiPo) compatible motors for drones. Most start at 7.4V and the most common is 3S (11.1V). You can find our selection of RF modules here: https://www.robotshop.com/en/general-rf-data-telemetry.html Regarding the battery, you really need to choose the modules first.
@Maha The servo is likely 4.8V, the Arduino operates at 5V or 7-12V via barrel connector, and the L293D is 4.5 to 36. It seems you can get away with a 5V battery pack (most commonly found as a cell phone charger, but check the max discharge current). Alternatively, opt for a 2S LiPo and use a 5V regulator to power the servo, while the L293 and Arduino are powered at 7.4V. You don’t need two batteries.
Very useful peice of information you shared.i have got a very good basic idea about selecting batteries and there types.still i want to take your opinion that if im using 5 mg966r hitech servos with 4.2-6V required and stall current of 2.5A at 6v then what rechargebale battery would should i use.amd do i need a servo controller for servo connecting to aruindo or can i use the servos directly with arduino?
@Mir Muneeb An Arduino can effectively be used as a servo controller (ref. Arduino servo library). If each servo consumes 2.5A under stall, the continuous current should be closer to 500mA. If you operate all servos at the same time, the battery will need to be able to discharge at 3A (or a bit higher). Many 6V NiMh battery packs (4x 1.2V cells) can handle 3A continuous discharge.
Thank you Sir.i would also like to knw your opinion about how should i switch between 2 programs in arduino.eg im building a rehabilitation glove controlled by myoware sensor which is mode 1 and can also be controlled through flex sensors in another mode.how do i manually select which mode i want to use?
@Mir Muneeb That’s beyond the scope of this article. We suggest you create a new topic on the RobotShop Forum and we’ll be happy to answer there.
Good afternoon
I’m trying to chose the right rechargeable lithium battery to connect to a mini motor that is 4800-9800 RPM/80 mAh to use as a power source but has a strong suction. I will built this on a module and all the parts that I am going to use for this module must be small enough to put inside of 2" round tube. In addition i will use a power on/off switch, green light indictor stated fully charged and this of course cordless using a usb. I need your expertise advice because I am not knowledgeable in this area.
Thank you,
Mae
@Mae We’re happy to help, but need a lot more information. Can you create a new topic on the RobotShop Forum and provide the specs for the motor you are using and how long you want it to operate? You should also include the dimensional constraints again as well.
Dear Coleman,
I have a question considering powering a remote controlled vehicle. I want to control two servo’s(a S3003 servo and DS04-NFC Continuous Rotation Servo) which both need a voltage in the range of 4.8-6V and two DC 3-6v Gear Motors(100-120mAh), with an Arduino Yun. I lack knowledge in the area of power supply, so can you explain me which battery would fit these electronics. The vehicle should work for al least 45 minutes. The dimensions are not a problem, but I prefer a light baterry over a heavy one.
Thanks in advance,
Jasper