The video which shows the robot working is at real speed (see servo data)
The programm moves the servos at full speed to the next position and a short delay time after each command allows all of the servos to reach their final position.
That means that it is possible to increase the speed a little bit more by doing some fine tuning of the delay times after each command.
The second video shows the “Teach-In-Arm” which allows the Controller to “copy” the movement of this arm to the robotic arm.
The final thing which is still not implemented is the routine which saves the “Teach In” data 5 or 10 times per second, so that the conroller is able to replay it in a loop with the original speed or with a lower or higher speed.
hi! can you send to me the source code of this project and the list of materials? i would like to make this as our project. thanks so much! my email add is [email protected]… tnx
some more information ? especially for controlling RC-Servos
Hi Stephen,
sorry for the late answer. but I was not here for a longer time.
And there were also a lot of other “problems” which had to be solved using my PIC Controllers.
i.e. self made electronics for a RC-Excavator which works similar to the digital system used in slot cars. To replace a lot of wires between the rotating part of the excavator and the track unit, a small PIC 12F629 reads the pulses from up to 5 channels of a RC-Receiver and leads their information via a 2 wire connection to a second PIC12F629. At the second board the power is seperated from the data. The PIC is reading the data, and generates the PWM output for the 5 Servo output connctors. the 2 wire connection is made with a cheap 6,3mm mono microphone plug which is also used as the axle for the rotating part.
The arm of the excavator is also powered by standard servos and so it was necessary to change the control behavior from proportional to integral so that the servos move like real hydraulic cylinders which are controlled by valves.
I used the same 12F629 type for that job and added some features like adjustable limit positions and starting point programmable by one jumper, and automatic return to park position when missing the pulses for some seconds.
But back to the mini robot. I will try to contact you by mail for more help with that project.
Now the clock shows 1.05am at my location (Germany). Time to leave
I would like to make this soon. It would be really nice if you could email me the list of materials to make the arm and the teach system. Thanks, that would be great. Email me at [email protected] Thanks
