urgh. I'm messing about with servo.writemicroseconds() to try to get fine-grained movement on a positioner. The servo will run for a while, then stop, randomly, sometimes running fast, sometimes just creeping. If I look in dmesg the board keeps disconnecting from the USB system, taking new addresses and new USB id's. Grumble.
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- Three USB ports on the computer, all the same. Le sigh. The joints on the arduino itself look solid; I suppose I could reflow them, but it's worked for months with other projects.
And what makes me particularly suspicious about timing issues within the arduino is that when it's hung up, if I start reading the serial buffer from the host computer it'll start moving the servo again.Apr 21, 2012
Sounds like the deal then.Apr 21, 2012
- When it's loaded with code that does nothing but servo control and there's nothing else plugged into the host usb, it's fairly reliable. But it looks like if you want good servo control using writemicroseconds you probably want to use external power rather than USB for the whole board if you care about stability.Apr 21, 2012
- I'll be sure to keep that in mind.
I love my Arduino, but I sort of wish it had come with more documentation. Took me ages to discover that I cannot have anything connected to the tx/rx serial pins or programming would fail.Apr 21, 2012
- I can field a lot of Arduino questions, and there are other people on G+ that can field some extremely complicated questions. (Ditto linux, when you start playing with that more.)Apr 21, 2012
- This is why I love G+ so much. You meet the most interesting people!Apr 22, 2012