I’d like to use this servo: [image] DF15RSMG 360 Degree Motor (20kg) This is a most powerful standard servo sized motor from DFRobot so far. The DF15RSMG equips with two pairs of the servo shells. One is a stardard shell with four M4 mounting holes. but I’m afr…

You will need a separate power supply that can provide up to 3A of current for the servo.

@kennethlimcp New to all of this. Do you know of a single cord that could power both the servo and the Photon? Trying to only use one wall outlet plug

You can find a USB 5V 2A adapter easily i think. Something like: http://www.samsung.com/uk/consumer/mobile-devices/accessories/connectivity/ETA-U90UBEGSTD Try looking around for a higher amperage model with a USB port and it should be easily achievable :smiley:

@kennethlimcp Oh gosh I have a lot to learn. How do you envision this being used? Would I just plug this directly into the Photon and keep the servo plugged into the Photon on the VIN pin? Wouldn’t that still be 4.8V? Or would I splice the USB cable and pigtail part into the Photon and part into t…

Something like a Y-splitter would work well - http://www.usbfirewire.com/parts/rr-usb2-splitter.html I would personally prefer the splicing option but using two separate cables allow for USB-related features without affecting power to the servo.

@syndac , I would not recommend powering the servo via the Vin pin of the Photon. The Photon’s onboard protection diode can only handle 3A peak (not sustained) and may overheat and get damaged. Instead, I suggest an approach I used for the Message Torch I built, which uses a large number of Neopixe…

@peekay123 Thanks for the input. Instead of the adapter with screw terminals, could I use something like this: [image] Breadboard-friendly 2.1mm DC barrel jack This power jack is designed to fit 2.1mm power plugs snugly and securely. Perfect for adding a power connector to your project. …

@syndac , the 2.1mm connector is fine but I’m not sure how much current solderless protoboards are rated for. Nonetheless, keeping wires short should be ok. As for the wires in the maker kit, they would need to match the size of the wires on the servo. I believe they should be able to handle the c…

@peekay123 Good thinking on the breadboard. After some research, it looks like there’s a ton of folks that use 12V @ 5+ amps. Breadboard models probably vary, but I’ll try it out. Thanks again for all your help!

@syndac , one thing you might want to add is a 100uF to 470uF electrolytic capacitor between the power lines on the protoboard. This will smooth power while the servo is moving. :wink:

Noob question: Increase voltage? High-torque servo worth it?

Hardware

syndac July 11, 2016, 4:18pm 14

So something like this?

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Noob question: Increase voltage? High-torque servo worth it?

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