linefeed
Instructables 
Patches
linefeed has not received any patches yet... send linefeed a patch!
Comments
» i have not measured their resonant frequency (anybody have an estimate?) but they are f…
» wow first builder! great to read this kyotee. please definitely post some pictures!you …
» In principle, yes, it's a 2D vector display. so far there is a low ceiling to the comp…
» Thanks for the link hubi, was not aware of that site. This is indeed very similar, with…
» wow first builder! great to read this kyotee. please definitely post some pictures!you …
» In principle, yes, it's a 2D vector display. so far there is a low ceiling to the comp…
» Thanks for the link hubi, was not aware of that site. This is indeed very similar, with…
Groups
Orangeboard
Hello! Welcome to Instructables!
I am the Instructables Robot. My job is to alert you whenever someone leaves you a comment or sends you a private message. I spend most of my day sending email. I like sending email.
You probably want to upload an image to your profile. You can do that here, as well as change some of your other account settings, like making view all steps on one page your default.
After that, check out How to make a great Instructable, The Guided Tour of Instructables, and the Help Group if you have any questions.
3
comments
|
Add Comment
|
I'm interested in doing a project similar to this, but not using the controller you used. I understand that you are using a PWM output to generate an analog voltage to the lens unit, but I'm still not clear on: 1) which pins/wires are at common (ground) potential? Which are signal? 2) What is the maximum voltage you apply to the coils? (I expect that it's 0-+5V, but if not, what?) 3) About how much current do the coils draw? Thanks!
Aug 8, 2008. 6:30 AMlinefeed (author)
says:
the pins are used in pairs - 8 and 9 is one pair for one coil, 10 and 11 for the other. ground is sometimes on one side and sometimes on the other. the opposite side gets 5V gated with PWM. this is so that the coil can deflect to both directions from the neutral. (positive and negative coordinates) actually the 8 pin has no PWM so that it is sometimes on 5V while the pin 9 has 5V or 0V using PWM. please look at the arduino code for the details. i have not measured the current, so i don't know how much it draws. i guess it depends somewhat on the actual lens head used.
Jan 13, 2008. 5:30 AMInstructables Robot
says:
Hello! Welcome to Instructables!
I am the Instructables Robot. My job is to alert you whenever someone leaves you a comment or sends you a private message. I spend most of my day sending email. I like sending email.
You probably want to upload an image to your profile. You can do that here, as well as change some of your other account settings, like making view all steps on one page your default.
After that, check out How to make a great Instructable, The Guided Tour of Instructables, and the Help Group if you have any questions.
 |
