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Re: Mike's Timelapse Rig (MTR)

 by Mee_n_Mac ¦  Mon May 02, 2011 3:35 pm ¦  Forum: SparkFun Product Questions ¦  Topic: Mike's Timelapse Rig (MTR) ¦  Replies: 13 ¦  Views: 1850

mee_n_mac: That kit sounds very interesting! I just ordered a list of things from here, with the two servos I mentioned. That kit might be a better option but then, one can't have too many servos laying around. Well I did find the " kit " and it was at ServoCity but it wasn't what I (mis)remembered...

Re: wires to a wheel?

 by Mee_n_Mac ¦  Mon May 02, 2011 8:45 am ¦  Forum: SparkFun Product Questions ¦  Topic: wires to a wheel? ¦  Replies: 34 ¦  Views: 2856

Is there anyway the wheel could have a hollow shaft ( like this ) and allow a wire to be passed to a non-rotating plate sitting just above but centered in the wheel ? As far as "noisy" - what happens is that the electrical connection between the roating part (the ring) and the stationary part is not...

Re: Mike's Timelapse Rig (MTR)

 by Mee_n_Mac ¦  Mon May 02, 2011 8:22 am ¦  Forum: SparkFun Product Questions ¦  Topic: Mike's Timelapse Rig (MTR) ¦  Replies: 13 ¦  Views: 1850

I know I've seen a "kit" that had bracketry but the user could choose the motor and gears and get differing ratios and thus torque and perhaps the resolution of the feedback pot ... but I'm frustrated ATM in finding it. I don't think it was at ServoCity but you might search there just to be sure. Me...

Re: Juggling balls (with xbee + accellero)

 by Mee_n_Mac ¦  Sun May 01, 2011 4:17 am ¦  Forum: SparkFun Product Questions ¦  Topic: Juggling balls (with xbee + accellero) ¦  Replies: 17 ¦  Views: 1932

Hi all, Currently I'm working on a hobby project where I'm trying to build an accellerometer, xbee, 8 RGB leds, and li-po cell into a juggling ball. With a lot of creativity, I want to get some special light effects, by using the accellero data. We know when a juggling ball is in the air when there...

Re: Juggling balls (with xbee + accellero)

 by Mee_n_Mac ¦  Sun May 01, 2011 3:57 am ¦  Forum: SparkFun Product Questions ¦  Topic: Juggling balls (with xbee + accellero) ¦  Replies: 17 ¦  Views: 1932

The magnitude of the 3D vector of the acceleration will always tell you if the ball is going up or down. Thrown up into the air it has a magnitude of acceleration greater than at rest, and falling it has an acceleration less than at rest. That magnitude is calculated with the square root of the sum...

Re: VR Controller Suggestions

 by Mee_n_Mac ¦  Sat Apr 30, 2011 8:23 am ¦  Forum: SparkFun Product Questions ¦  Topic: VR Controller Suggestions ¦  Replies: 6 ¦  Views: 442

Is a gyro (3 axis) enough ? You have position in X, Y, Z space but do you also know angular orientation about the X, Y and Z axes ? If you're starting from a known orientation then a gyro can be used to compute how much rotation has occured from that initial position. If you don't know (or assume) t...

Re: 3 axis accelerometer for distance measurement?

 by Mee_n_Mac ¦  Fri Apr 29, 2011 12:09 pm ¦  Forum: SparkFun Product Questions ¦  Topic: 3 axis accelerometer for distance measurement? ¦  Replies: 8 ¦  Views: 1912

thanks for your responses. so all i need is precision and rapid processing. I think, something like this would be practical with At328 @ 20 MHz or any PIC 18 with 24MHz in PLL mode to work at 48MHz. The error would be reduced but unreliable due to sampling with internal ADC at this speed. You haven...

Re: Big Button remote for Mom

 by Mee_n_Mac ¦  Fri Apr 29, 2011 9:40 am ¦  Forum: SparkFun Product Questions ¦  Topic: Big Button remote for Mom ¦  Replies: 10 ¦  Views: 1153

I made my own IR remote control for an old Technics Amp and CD player using a Pic 16F1938 which has 8 interrupt on change pins. I programmed it in assembly. And I use the microcontroller's PWM for 38 kHz. Then use another microcontroller pin to switch on/off the 38 kHz. Then I use transistors to in...

Re: Big Button remote for Mom

 by Mee_n_Mac ¦  Fri Apr 29, 2011 6:19 am ¦  Forum: SparkFun Product Questions ¦  Topic: Big Button remote for Mom ¦  Replies: 10 ¦  Views: 1153

itikhonov wrote:
Mee_n_Mac wrote:Thanks ! Alas the donor remote has it's controller covered in the usual blob of epoxy.
http://www.youtube.com/watch?v=kTPXKA66baQ

Very interesting ! I didn't know you could do that. I'll have to de-blob it, even it's just to see what lies underneath. Thanks !

Re: Big Button remote for Mom

 by Mee_n_Mac ¦  Fri Apr 29, 2011 3:46 am ¦  Forum: SparkFun Product Questions ¦  Topic: Big Button remote for Mom ¦  Replies: 10 ¦  Views: 1153

Would something like this be easier than building from scratch? http://www.amazon.com/Functions-Universal-Remote-Control-Satellite/dp/B000PQZ8YM/ref=pd_cp_e_0 It would indeed be easier ... but where would the fun be in that ? :lol: Actually that remote is the same as the donor remote I'm refering t...

Re: Big Button remote for Mom

 by Mee_n_Mac ¦  Fri Apr 29, 2011 3:37 am ¦  Forum: SparkFun Product Questions ¦  Topic: Big Button remote for Mom ¦  Replies: 10 ¦  Views: 1153

Open that remote you are going to use as donor first. There is a good chance that you will see there everything you need with rom micro for which pin compatible flash-based one exist. You can use http://www.sparkfun.com/products/9578 to make it talk. Thanks ! Alas the donor remote has it's controll...

Big Button remote for Mom

 by Mee_n_Mac ¦  Thu Apr 28, 2011 4:38 pm ¦  Forum: SparkFun Product Questions ¦  Topic: Big Button remote for Mom ¦  Replies: 10 ¦  Views: 1153

Hi, first-time poster asking for some advice before I start a project. What I'm looking to do is make a non-universal, dedicated-for-the-TV-only, big button remote for my mother (who is 85). As is typical for people her age, she's not exactly "tech savvy" and her eyesight is quite bad due to macular...

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