Hi all! I got 6 MG 996r High tourqe servos, for a robotic arm that is already assembled. Only issue, I'm having issues finding a proper power supply(6V 6Amps) to use to power the servos. what could my options be for a power supply?
Since you have a computer, you used it to post, use your favorite search engine and look on line. You will probably have problems with a 6A power supply, each motor needs 2.5 amps not counting starting inrush etc. I would consider something in the 20A range and use a SEPIC converter to power the Arduino.
MG996R Servo Motor Features
- Operating Voltage is +5V typically
- Current: 2.5A (6V)
- Stall Torque: 9.4 kg/cm (at 4.8V)
- Maximum Stall Torque: 11 kg/cm (6V)
- Operating speed is 0.17 s/60°
- Gear Type: Metal
- Rotation : 0°-180°
- Weight of motor : 55gm
- Package includes gear horns and screws
Ahhh, awesome thanks you. I'll use my computer and my favourite search engine to research how to use the sepic converter. easy enough to find a 20am power supply thankfully
The SEPIC converter is for the controller, they come in 2-3 amp range for a few $$$. Connect it then adjust the output to about 8 volts. Use that to power Vin. This will give you the added advantage of the filtering on the Arduino. I chose this solution so you only have only one mains connection.
Thank you, I stumbled across the Mean well LRs 50-5 power supply, from what I see it seems to be pretty much exactly what I need (Unless I'm wrong of course lmao) . I'll go and take a look at that Sepic converter now
These servos work well at 5V for me.
5v power supplies on Amazon.com
Good luck, those are good units. 
Thank you. Still haven't figured out what Sepic converter I need, all the ones I'm seeing is 4amps is that okay?
Nvm I found this one
[eBoot Mini MP1584EN DC-DC Buck Converter Adjustable Power Step Down Module 24V to 12V 9V 5V 3V, 6 Pack https://a.co/d/4TsLMIe](eBoot Mini MP1584EN DC-DC Buck Converter Adjustable Power Step Down Module 24V to 12V 9V 5V 3V, 6 Pack https://a.co/d/4TsLMIe)
Yes. Simple way to determine if something will work. The voltage needs to be the same. Current (amps) is what the load will require. It is like taking a short trip. If you do not have enough gas you will not make it. If you have enough great but if you get delayed you are out of luck. If you have a surplus a piece of cake. For current you need to be able to supply more than needed at the required voltage. It will be like your car, it will only take what it needs. Motors require much more current when starting then they need while running.
Converters:
A buck will lower the input voltage.
A boost will boost up the voltage.
A SEPIC will buck or boost depending what is needed to maintain the set voltage.
When you look at them it may say 4 amps but it will also tell you to heatsink it if you draw over 2 amps.
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eBoot Mini MP1584EN DC-DC Buck Converter Adjustable Power Step Down Module 24V to 12V 9V 5V 3V, 6 Pack https://a.co/d/4TsLMIe
I found this one lol so that should work for what I need it for. Thanks for your help!
Good price but check the specs.
1 Mini MP1584EN DC to DC buck converter module with a wide operating range
2 Input voltage: 4.5 V to 28 V; Output voltage: 0.8 V to 20 V
3 Output current: 3 A (maximum); Conversion efficiency: 92% (maximum)
4 Output ripple: less than 30 mV; Switching frequency: 1.5 MHz (highest), typically 1 MHz
5 Operating temperature: -45 ℃ to 85 ℃; Size: 22 mm by 17 mm by 4 mm; Warning: do not reverse the positive and negative terminals to avoid any possible damage; Do not use light load (less than 10% of output power) or without load
- Wide range good.
- Good but the input voltage must be a bit higher then the output voltage, it does not boost.
- I would not go much over about 2.5 amps. 8% of the energy is lost in the conversion.
- No problem as the arduino will filter this out when using Vin
- This has a minimum load 10% of 3 amps or 300mA.
This should get you started.
Thank you. So might be a good idea then to look for a different one is what your saying? Or this one is generally a good one for starters?
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