Just saw this 16-Channel PWM / Servo Bonnet on Adafruit. https://www.adafruit.com/product/3416 They state "Best of all, we even have a Python library you can use, so you'll be up and running instantly". That's a switch? This may be abetter option than the one you bought Jack, this one does it all over I2C. So no hogging GPIO PIN's. I say "may" as I haven't got it in my greedy little hands to actually test it.
mine will be ok for what I going to do with it ,plus it came with the servos ,I was a little disappointed in the size of the servos that came with it though . I wish they would remember they promised python library for the touch hat i got .. ..Just saw this 16-Channel PWM / Servo Bonnet on Adafruit. https://www.adafruit.com/product/3416 They state "Best of all, we even have a Python library you can use, so you'll be up and running instantly". That's a switch? This may be abetter option than the one you bought Jack, this one does it all over I2C. So no hogging GPIO PIN's. I say "may" as I haven't got it in my greedy little hands to actually test it.
Yeah, there are mini and even micro servo's. I guess it all depends on what your going to do with them? The small ones are likely great for say a remote control model airplane. If you need to move something heavy you'll need a bigger one, maybe even one with metal gears in it so it doesn't break under heavy load. I think the ones I have are the Micro servo's. That's probably what you have too.
yeah,they are defiantly micro,marked Micro 9G - sg90. google found it . looks like 90 might means 90 degrees of movement ,there are hacks on youtube to make it 360,so yours would have to be 360's
SG90 Digital | Tower Pro
youtube hack video .
Tower Pro SG 90 Micro Servo Hack | Servo 360 rotation - YouTube
The ones I have now are the one in this kit, http://wiki.seeed.cc/Sidekick_Basic_Kit_for_Arduino_V2/ No make or model number on it. No sticker or any writing on it other than a big CE. I do believe mine rotate 180 degrees. I though most of them did? I did a quick Google search for the sg90 and its lists everything except the rotation range. One site listed it as 9 gram, which may be how much force it can supply? Or how much it weighs? I think you'll find it rotates 180 degrees, 90 in each direction. The continuous rotation ones "I plan on buying" are these, https://www.adafruit.com/product/2442 purpose built ones.
What I'm using on my rover is a DC Motor in a servo body. https://www.adafruit.com/product/2941 It looks like a servo, but its just a motor driving some gears. Only two wires coming out +V and Ground. There is no fine control over how much or how fast it turns. Increase the voltage and it runs faster. Control is a lot easier though, you just apply a voltage. Reverse the polarity and they turn the other direction etc.
The continuous rotation servos have much better control over how fast and how much they turn, its all done with PWM, Pulse Width Modulation.
i read on one site i was looking at that its 180, but really only goes 160... i looked at some many sites today i forget what iste ,,, day-off and nothing to but but search .
just read one site same servo saying the 9g was the weight of the motor
this will likely be all i will buy in this line of robot/moving parts stuff ,as it's all to expensive f,or now, anyway i have enough stuff I haven't even used yet ,or learned to use ! lol
!
It might depend on how big that nub of plastic on the gear, used as the stop is? Hook one up, put an arm on it and see how far it goes.
It might depend on how big that nub of plastic on the gear, used as the stop is? Hook one up, put an arm on it and see how far it goes.
