![]() And not bothered to explain why any of it needed to work that way or what it was for. And a separate one about fine control of servos. Maybe what I should have done was posted two separate topics, one about converting VERY small voltage changes into very fine steps. "Does it seem like the Arduino can do this? I'm trying to get a handle on that before I buy one and start tinkering." Then I mentioned the servos, saying I'd like to be able to drive them as fine as. 1 mV?Īnd if I used a reference voltage of 0.255, could it convert to steps in. If I used a reference voltage of 1.023, would it indeed be able to convert to steps as fine as. That was asking for confirmation that I understood correctly what the Arduino could do. Does that mean that the Arduino would convert the sensor voltages to 1 millivolt steps? If I used a reference voltage of 0.255 volts, would the Arduino be able to convert the sensor voltages to. So let's say for example I could produce a reference voltage of exactly 1.023 volts for it. "From what I have been reading, I can input to the Arduino a reference voltage for it to compare to. I guess I should have made a more obvious stand-out question or summary set of questions in my Chart Recorder thead. I looked at the post and could not find a real question in the material That seems like it'll do what I need for the servo resolution. WildBill, thanks for the tip on servo.writemicroseconds. I'm concerned it never will since it has already slid to page 3 of the list in less than 12 hours. Here is the project, which unfortunately has gotten no replies. Therefore the limited range of motion and need for finer steps than 1 degree. ![]() Reason is for a homemade Chart Recorder, with servos driving pens. That might be workable for this project, but not as ideal as finer steps. Is that possible, or is the Arduino limited to 1 degree? Or is it possible to use a range of 180 "steps" for the servo signal, confined within a 20 degree total range, which would be 0.11 degrees per step. If the sensors I am using could be converted to produce 1024 steps, I'd like to have say 1000 steps for that 20 degree range of travel, or 0.02 degrees per step. There is a project I'd like to use the Arduino for, but the servos must be able to be controlled much finer than 1 degree.įor example, the servos to move a total of 20 degrees, 10 left, and 10 right. I need to know whether the Arduino can control servos more accurately than by one degree? If so, can someone point me to example code? The only examples I have found, use 1 degree steps, apparently. ![]() I'm worried I may have the wrong type of servos or controller - I'm a relative amateur when it comes to controlling servos, though I do have some experience with C and C++, mostly for academic purposes. Myservo.write(pos) // tell servo to go to position in variable 'pos'ĭelay(15) // waits 15ms for the servo to reach the positionĪny help would be most appreciated. ![]() Myservo.attach(9) // attaches the servo on pin 9 to the servo objectįor(pos = 0 pos =1 pos-=1) // goes from 180 degrees to 0 degrees Int pos = 0 // variable to store the servo position a maximum of eight servo objects can be created Servo myservo // create servo object to control a servo This example code is in the public domain. I cannot get it to behave as the code seems to indicate it should. ![]() Whenever I try to test the servo according to the example code supplied by Arduino, that is supposed to cause the servo to sweep back and forth, the response is always a continuous 360 degree rotation by the servos. I decided to use a couple of servos and a pan-tilt bracket to get it done, so I purchased two standard Hitec Servos (continuous rotation), and an Arduino Uno R3. I'm working on a project where I have to build a pan/tilt mechanism for a camera. ![]()
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