The tooth ratio is 55/109 so that should be fine, likewise the shafts are well aligned. I just cleaned the belt and pulleys, and the noise is present with a wide range of tensions, all they way down to just enough to keep the belt from slipping.
Perhaps it is related to change in the belt...
I don't have it in front of me right now, but the belt is about 10mm wide, roughly 350mm long, and runs over two ~50mm dia. pulleys.
The belt is original as is the pulley the noise seems to be coming from. The changes were the result of replacing the second pulley, and it appears identical to...
I recently had to adjust and re-tension a timing belt in a robotic arm. Everything was fine for the first several hours of use, but the belt then started making a noticeable clicking noise. I've re-checked the tension and it is OK. The noise appears to be synchronized with the teeth on the...
Thanks to everyone for pointing me away from the power supply and towards I/O lines.
I'd left a couple unterminated wires running from the board to a PS/2 connector for a keyboard. After disconnecting this bundle, several large shocks wouldn't cause a reboot, reconnecting the wires and right...
I have no idea if the issue is due to the power lines or if just shows up on it. The run from the power supply to the filter is about 5", and the run from the filter to the PC104 power inputs in about 3", both runs have 2 conductors for each of 5V and GND.
I hadn't thought about the reset pin...
Quite sure. The motors are very clean and reasonably well isolated. The issue is repeatable and generally occurs when there is an obvious static discharge involving the robot, even when not moving.
The ground passes through one of the coils on the choke. The choke is two 400uH coils.
There are two 1200uF electrolytics, the small ceramics are 1uF and 0.1uF. There are two of each between 5V and GND supply from the supply, and there is a 1uF and 0.1uF from each of 5V and GND to a separate...
I'm having trouble with a PC104 on a mobile robot. It is cursed with a very dry climate and carpeted floors, so massive static discharge a constant problem - it sees +/- 40V transients on the 5V supply quite frequently due to coming in contact with metal or being handled by people.
The several...
Thank you for the feedback. This isn't so much for a class as it is for an open lab that will be producing students and faculties designs, thus the need for CAM. If things go well I'll probably expand in the future, budget requirements means I need to stick with one package for now.
We have...
Sorry to put another one of these out there, but my question wasn't answered well looking back through similar questions.
I'm starting up a small university workshop to support research in robotics. The work will mostly be done in house from design to assembly, and a lot of this is likely to...
