Show Posts
Pages: 1 2 [3] 4
31  Using Arduino / Motors, Mechanics, and Power / Re: Can any one recommend a proper encoder for my motor (DC motor)? on: December 13, 2012, 04:58:54 am
Chagrin  those capacitive sensors look great for the price too perhaps Ill try them as well
32  Using Arduino / Motors, Mechanics, and Power / Re: Can any one recommend a proper encoder for my motor (DC motor)? on: December 13, 2012, 04:47:45 am
Wow wasn't sure if I would even get a response seeing as the thread had been silent for a while. smiley-mr-green

CrossRoads Ive already got a board layout that id like to adapt from the  magnetic rotary encoder v2.1
http://wiki.makerbot.com/mre2 (but im not yet bound to this)

Im good at the mechanical side of putting things together with a steady hand but pretty slow in figuring out if a circuit is any good.  It would be great if that same layout works probably with different cap/resistor values or maybe I can get away with it like it is just that I have no idea really.  The files are all on the google code page for the version 2.1 perhaps they are easy enough to edit for the as5048b. 

What I find really nice about this board is that it can be programmed using the i2c. ideally Id be looking at setting it up with the option to daisy chain it for a robotic arm/leg positions to drive rather hefty motors.  id also be using them for my robot gimbals like the following video.  But Id also like to try one the 4th axis of my milling machine.
http://adamdonovan.net/works/soundlens%20Adam%20Donovan.html


33  Using Arduino / Motors, Mechanics, and Power / Re: Can any one recommend a proper encoder for my motor (DC motor)? on: December 12, 2012, 03:01:05 pm
Would  anyone be interested in giving me a little help with making a circuit for the AS5048B.  I'm just about to do a home print of  circuit board for the AS5040 so I could do it at the same time.  Id be aiming at setting up the as5048b to use with I2c.  My feeling is there are a lot of scattered projects for the magnetic encoders so Ill be documenting the process and making a tutorial from it. 
34  Using Arduino / Project Guidance / Re: Multiplexing - Nitinol, flexinol or aka shape memory alloy on: September 19, 2012, 07:27:36 am
Thanks John thats a huge oversight by me and an important tip thanks:) I also see that the current its pretty high for these things around 350mA for each SMA.  But I guess I'm lucky there are some higher current Darlington arrays around such as this one.
http://www.nteinc.com/specs/2000to2099/pdf/nte2016.pdf
35  Using Arduino / Project Guidance / Multiplexing - Nitinol, flexinol or aka shape memory alloy on: September 19, 2012, 05:49:22 am
Hi all smiley
Im just trying to get my head around an initial electronics solution with a project that would require 100s of little silent actuators.  Specifically Im trying to figure out if an LED matrix such as the one in the link I have provided would work with using some shape memory alloy(SMA).   Id guess that I would also need to use a Mosfet to get the extra current at the end but have no idea if this would work with the SMA.

link for basic 32x32 array for LEDS
http://little-scale.blogspot.co.at/2008/01/32-led-fader-with-arduino.html

Link for a FET output for the Nitinol wire SMA
http://spaghettionastick.wordpress.com/2011/10/17/nitinol-flexinol-muscle-wire-shape-memory-alloy/

So anyway would be quite interesting but is it possible?
adam
36  Using Arduino / Sensors / Re: inductive proximity sensor NPN NO on: July 01, 2012, 04:12:33 am
Actually I just wanted to use Arduino to have a look at the output of the sensor.  I''m using these on my mill as home limit switches which they are perfect for.  I have on my mill a proper break out board that this sensor hooks directly up to without the need of any pull ups as they are built into it(into the board not the sensor).  I'm making robots with the mill so I was thinking these could also act as emergency stops to some of the larger arms and legs I'm making.  The legs Im using have optical rotary sensors but hey sometimes things come loose/break and these would add that extra sensing option to stop a crash. 
37  Using Arduino / Sensors / Re: inductive proximity sensor NPN NO on: June 30, 2012, 03:21:07 pm
Mark I guess ill have to get hem to clarify if its 6 to 36v or not..but it also says that on the front of the sensor.  Ill get more of a chance to play with it the morning and update then.
38  Using Arduino / Sensors / inductive proximity sensor NPN NO on: June 30, 2012, 01:44:51 pm
I got some upward sensing inductive sensors for my mill and was wondering if anyone had tried using something like this in their projects and or might have some references.  to me the hardware setup is quite simple(or so i think) but rather than re-invent the wheel id love to see how other might hook this up along with some basic ref code.  These are quite cheap inductive sensors but seem to work quite well(well enough that ill use them on my cnc mill).my mill uses its own type of opto board which has some nice easy to connect ports with pull ups ect.

http://www.ebay.co.uk/itm/170854002270?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

I did look around for some answers before posting but nothing specifically to this type of pre buit inductive sensor.
cheers
Adam
39  Using Arduino / Project Guidance / Re: 500 CPR HEDL encoder with line driver - How to wire and read it? on: January 12, 2012, 07:22:12 am
ok so using the basic example with the library I linked to im my previous post (and with the help of my good friend (PiffPaff) came out with the following code to send out the CPR's as degrees.

void loop() {
 long newPosition = myEnc.read();
 newPosition = newPosition % 2000;
 long degree = (newPosition * 360) / 2000;

Serial.println(degree);
40  Using Arduino / Project Guidance / Re: 500 CPR HEDL encoder with line driver - How to wire and read it? on: January 12, 2012, 06:56:27 am
Yep works like a treat:)
                                 Notes so far - I tried a few of the code examples from the Arduino page but of course its not eally fast enough to count the encoder I have.  I then tried the *new encoder code linked here http://www.pjrc.com/teensy/td_libs_Encoder.html and well seems like I get many more counts and it seems so far to not skip a beat, now Im getting 2000 counts per rev and thats just lovely for me:)

Ive used the basic example thus far now need to figure out a way to use the 3rd pin..sorry if im reapeating myself
Im a little rusty with the code stuff its been years since I really touched it.  but ill give it a go now
41  Using Arduino / Project Guidance / Re: 500 CPR HEDL encoder with line driver - How to wire and read it? on: January 12, 2012, 05:35:30 am
OK just had enough time to wire this up how I think it should be according to other examples.  Ive posted an image of the setup here to show my progress and get feedback before I turn my ardunio on.  Can anyone comment if I've got something wrong here(I don't feel like frying another board).


You might need to zoom in to see the pins on the plug.
Ive also left Pin 9 free for the moment as I'm sure how to use this reference pin code wise.
42  Using Arduino / Project Guidance / Re: 500 CPR HEDL encoder with line driver - How to wire and read it? on: January 11, 2012, 11:41:42 am
Ok nice one:) Ill get a little chance a doing some wiring up soon and let you know the results.  Also I havent really seen something yet that uses the 3rd pin(I) which mine uses for reference point every rotation but Im guessing I can jsut use it like the other 2 pins and use it to check that there has been the right number of ticks per rev?  I was thinking of using a "Home point" for each rotation so that it can never get too far off track.
43  Using Arduino / Project Guidance / Re: 500 CPR HEDL encoder with line driver - How to wire and read it? on: January 11, 2012, 10:11:54 am
dc42 that you say its a standard quad encoder helps me a little but then off to the next gap in my understanding.  I did read through the quad encoder pages here and where I got a little confused was most of the encoders just have pin A and B where this one seems to have A HIGH & A LOW, plus B HIGH & B LOW.  I'm not really sure what to do with these other pins it has bothe in terms of hardware and sfotware. 

What I thought was inside this package was a HEDS like this one(im assuming it still is but jsut with the line  driver to seperate the singal ie deboucing)
http://pdf1.alldatasheet.com/datasheet-pdf/view/88912/HP/HEDS-5640-G06.html

I'm assuming the HEDL is added in here to improve the signal right.    Right now I'm looking at the Block Diagram on page 3 of the HEDL doc and if you compare this to the the HEDS pdf I just posted there is a little more going on.  I also don't fully understand the Pinouts ie its says No 1. is NC which I'm assuming means no connection.

do you understand what im getting at here?
44  Using Arduino / Project Guidance / 500 CPR HEDL encoder with line driver - How to wire and read it? on: January 11, 2012, 06:54:04 am
I'm using a 500 CPR HEDL encoder with line driver but as far as the encoder setup page goes its pretty unclear how I might wire it up an read from it, mine is the a 5640 and has 10 pins.  These are some of the most common rotary encoders for motors so I'm sure someone has at least got something working?  I'm trying to be able to get the encoder position and then translate this into degrees and eventually get this into PureData or VVVV. Id be willing to do some sort of trade with other work for example some 3D modelling in max or solidworks(My 9 to 5 job), perhaps even some cnc milling.
Upload folder is full but here is link to the HEDL pdf which is actually a line driver and an encoder.
http://uploading.com/files/736b4a7m/HEDS_5xxx.rar/

Any help would be so appreciated and let me know if you need more info
45  Using Arduino / Project Guidance / Re: Hello Everyone, I need help with my project on: January 11, 2012, 06:12:14 am
I'm also using a HEDL encoder with line driver but as far as the encoder setup page goes its pretty unclear how I might wire it up an read from it.  Mine is a 5640 and has 10 pins.  These are some of the most common rotary encoders for motors so I'm sure someone has at least got something working?  Any help would be so appreciated.

Upload folder is full but here is link to the HEDL pdf which is actualy a line driver and an encoder.   

http://uploading.com/files/736b4a7m/HEDS_5xxx.rar/
Pages: 1 2 [3] 4