Search found 36 matches

by LesHall
Fri Oct 16, 2015 8:40 pm
Forum: General R&D
Topic: Phone Home Gizmo
Replies: 1
Views: 765

Phone Home Gizmo

Hey everyone, I have good news! There is a chip out there that provides WiFi capability and also has a microcontroller with some (limited) I/O capability that We can use to make our hands and arms communicate with the central e-NABLE server! The chip is called the ESP8266 and it has been around for ...
by LesHall
Mon Aug 24, 2015 11:00 am
Forum: Arms
Topic: Mechanical Arm Device for Arms Without Elbows
Replies: 0
Views: 897

Mechanical Arm Device for Arms Without Elbows

I worded the subject of this thread such that the acronym would be MAD4AWE, though the subject is not quite so humorous. I was called back into e-NABLE from a 4 month hiatus working on water treatment electronics by a frantic woman in Brazil just yesterday. She posted in frustration hoping that some...
by LesHall
Mon Aug 24, 2015 10:29 am
Forum: General R&D
Topic: Mechanical Force Feedback
Replies: 1
Views: 983

Mechanical Force Feedback

I've been cultivating an idea for a while now, and it's time to share. There have been a lot of efforts to accomplish sensory perception of touch, for example in the fingers of a hand using electronics. These designs all have their merits and flaws as any design has, and I'm not knocking them here a...
by LesHall
Sat May 23, 2015 7:04 am
Forum: General R&D
Topic: VA Innovation Creation Series
Replies: 1
Views: 911

Re: VA Innovation Creation Series

Tremors Finger Cots - 1.jpg The photo above shows some finger cots and bits and pieces of finger cots that I printed some time ago. I intended to make springy finger thingies for e-NABLE hands with them, encircling the joints or fingers entirely and replacing the elastic chords that have to be thre...
by LesHall
Sat May 23, 2015 6:36 am
Forum: General R&D
Topic: VA Innovation Creation Series
Replies: 1
Views: 911

VA Innovation Creation Series

I feel strongly about this VA Innovation Creation Series for several reasons of social, personal, and even spiritual nature. I also feel that I have the chops to put a dent in some of them. If you know me, you know that I just have to share whatever I'm creating, it's both a weakness and a strength,...
by LesHall
Fri Apr 10, 2015 7:14 pm
Forum: General R&D
Topic: Spidey Sense! A Practical Implementation
Replies: 17
Views: 5284

Re: Spidey Sense! A Practical Implementation

It's time for an update since I have done some actual experimentation and have results to report. Touch Sensor.JPG As you can see the sensor is quite small to fit in the tip of a finger of a 100% sized hand. Even at 125% it would be quite small. Also the sensor is delicate because the leads exiting ...
by LesHall
Wed Apr 08, 2015 4:59 pm
Forum: Beta Testing
Topic: Gripper Box 3.0: FEEDBACK/TESTING REQUESTED
Replies: 33
Views: 7083

Re: Gripper Box 3.0: FEEDBACK/TESTING REQUESTED

OK I"ve got my gripper box files and instructions. I tried to read the instructions but they kinda require that you have a hand and the gripper box parts in front of ya, so i will wait on grokking them. I will get my filament within a few days and then i can go to town and rock the box! This ha...
by LesHall
Wed Apr 08, 2015 12:18 pm
Forum: General R&D
Topic: Tensioners
Replies: 16
Views: 3866

Re: Tensioners

I would like to use one of these tensioners on my Spidey Sensor TnT hand that will measure touch and temperature. Can someone with a design for the Raptor Reloaded send me a set of STL files that replace the existing tensioner? Thanks

Les
deltamodulator@gmail.com
by LesHall
Tue Apr 07, 2015 5:06 pm
Forum: General R&D
Topic: Spidey Sense! A Practical Implementation
Replies: 17
Views: 5284

Re: Spidey Sense! A Practical Implementation

SS TnT Schematic.png Shown above is the schematic for the TnT feature of the Spidey Sense enhancements. To the left, not shown, are the sensors themselves. They are two-wire devices that act as resistors with the property that their resistance lowers with increase in the sensed parameter (negative ...
by LesHall
Thu Mar 26, 2015 6:57 pm
Forum: Hands
Topic: Design Goals and Processes
Replies: 8
Views: 1325

Re: Design Goals and Processes

Peregrine,

I have not seen you at the last few R&D meetings. We'd love to see you there.

Les
by LesHall
Thu Mar 26, 2015 1:22 pm
Forum: Hands
Topic: Design Goals and Processes
Replies: 8
Views: 1325

Re: Design Goals and Processes

This brings to mind something I've noticed about our R&D meetings: there is little discussion about what recipients actually report in terms of usage practicality. Mostly we try to imagine what a recipient would experience and those among us who have had experience with the recipients explain to...
by LesHall
Wed Mar 25, 2015 5:14 am
Forum: General R&D
Topic: Spidey Sense! A Practical Implementation
Replies: 17
Views: 5284

Re: Spidey Sense! A Practical Implementation

123D Circuit.jpg
TnT circuit
123D Circuit.jpg (602.46 KiB) Viewed 4884 times


This circuit is a simplified diagram of the circuit to be used for the TnT (Touch and Temperature) Spidey Sensor feature of e-NABLE hands. I have written an initial processor code and I will be constructing the circuit tonight. More to follow...

Les
by LesHall
Sun Mar 22, 2015 2:30 pm
Forum: Myoelectric
Topic: MYOsc - A submission to the hive mind
Replies: 4
Views: 1792

Re: MYOsc - A submission to the hive mind

That's a good question and I have an even more important question: Why SHOULDN"T we do this? for liability reasons. If we do some fancy fan dangled BS is our circuits and then an accident happens, what do you think the lawyers are going to say? right. So then why did i post this here? For resea...
by LesHall
Thu Mar 19, 2015 8:44 am
Forum: General R&D
Topic: Superhero Cyborgs: kids designing their own device?
Replies: 2
Views: 904

Re: Superhero Cyborgs: kids designing their own device?

I have a Spidey Sense Super Hearing circuit working and I plan to design a small parabolic dish for it. Maybe your kids would want that?

Les
by LesHall
Thu Mar 19, 2015 8:41 am
Forum: General R&D
Topic: What are you working on
Replies: 3
Views: 1041

Re: What are you working on

I'm working on Spidey Sense Super Hearing.

Les
by LesHall
Thu Mar 19, 2015 8:37 am
Forum: General R&D
Topic: Spidey Sense! A Practical Implementation
Replies: 17
Views: 5284

Re: Spidey Sense! A Practical Implementation

Spidey Sense Super Hearing.JPG As I sit here listening via the circuit shown above that I have just constructed since the last post, I am amazed at how loud my keyboard's keyclicks are, haha! I can hear the distant conversations from around the nurse's station way down the hall and all the muffled ...
by LesHall
Thu Mar 19, 2015 5:20 am
Forum: General R&D
Topic: Spidey Sense! A Practical Implementation
Replies: 17
Views: 5284

Re: Spidey Sense! A Practical Implementation

LM7332-pinout.jpg That's our opamp. ground goes on pin 4 in the lower left and power to pin 8 in the upper right. We put the mic in a voltage divider from power to ground and AC couple it into the first opamp stage with a gain of say 20, then the second stage has a gain of 20 also, with AC coupled ...
by LesHall
Thu Mar 19, 2015 5:10 am
Forum: General R&D
Topic: Spidey Sense! A Practical Implementation
Replies: 17
Views: 5284

Re: Spidey Sense! A Practical Implementation

OK tonight I am bored and wanting to do something for e-NABLE. I can always work on the HandOMatic refactoring but I just can't bring myself to do it right now. I have told e-NABLE Matcher that I want to make a hand in green and I'd like to put something creative on it. How about a Spidey Sensor? Su...
by LesHall
Thu Mar 19, 2015 4:50 am
Forum: Hand-o-matic
Topic: Hand-o-matic activity
Replies: 8
Views: 2772

Re: Hand-o-matic activity

lol, Laird I have been trying to contact you, buzzy bee you are these days! please contact me at your convenience! lol

Les
by LesHall
Wed Mar 18, 2015 4:40 am
Forum: Hand-o-matic
Topic: Hand-o-matic activity
Replies: 8
Views: 2772

Re: Hand-o-matic activity

this is a test message, testing a forum feature.

Les
by LesHall
Wed Mar 18, 2015 4:35 am
Forum: Hand-o-matic
Topic: Hand-o-matic activity
Replies: 8
Views: 2772

Re: Hand-o-matic activity

HI it's Les, just wanted to mention that I've gotten out of the habit of being involved with e-Nable due to distractions and now I am getting back into it!

Les
by LesHall
Sat Feb 28, 2015 1:20 pm
Forum: General R&D
Topic: Flapping Dragon's Wings
Replies: 0
Views: 624

Flapping Dragon's Wings

I'm printing these dragons, see? dragons!.jpg Well I go tot thinking and... well ok say those dragons are printed in flexible material. Now say we put some muscle wire or better yet that rising line twisted up filament stuff into the supports of the dragon wings. Like look close and see the thin mat...
by LesHall
Tue Feb 24, 2015 5:52 am
Forum: Myoelectric
Topic: MYOsc - A submission to the hive mind
Replies: 4
Views: 1792

Re: MYOsc - A submission to the hive mind

Now a word on Implementation. The current setup of using electrodes with snap-on wire leads in a harness and a TRS connector with jack may possibly be reduced with the following arrangement. The idea is to use carbon fiber PLA for the circuit and electrodes. This filament consists of 85% PLA and 15%...
by LesHall
Tue Feb 24, 2015 5:37 am
Forum: Myoelectric
Topic: MYOsc - A submission to the hive mind
Replies: 4
Views: 1792

MYOsc - A submission to the hive mind

Dear Hive Mind, I had plenty-o-fun distilling down a Myoelectric control circuit to it's bare essentials. What I am presenting here is some general and untested ideas for electronic circuit implementations of myoelectric sensors / drivers. These are just "thought experiments" and are compl...
by LesHall
Tue Feb 24, 2015 4:43 am
Forum: General R&D
Topic: EMG Sensors & Arduino
Replies: 4
Views: 1594

Re: EMG Sensors & Arduino

Shouldn't this thread be moved to the Myoelecgtric category?

Les
by LesHall
Sun Feb 22, 2015 7:05 am
Forum: Hand-o-matic
Topic: Hand-o-matic activity
Replies: 8
Views: 2772

Re: Hand-o-matic activity

FWiW, my activity last week was two late night sessions of about three hours each coding up the refactoring. gotta get a kick int the grass to repeat that performance this week and the job should be done! (Or at least Phase one, the originally envisioned job - we figured out more cool stuff to do on...
by LesHall
Sun Feb 22, 2015 6:59 am
Forum: Myoelectric
Topic: Brain Wave Sensors (Neurosky in Particular)
Replies: 2
Views: 1284

Re: Brain Wave Sensors (Neurosky in Particular)

Ya, I know I know - it's amazing we can do this, even if mouse control is tough or a bit ambitious for a single channel unit, I will learn a lot and surely other headsets with more electrodes WILL be able to do the task!

Les
by LesHall
Sun Feb 22, 2015 2:27 am
Forum: General R&D
Topic: EMG Sensors & Arduino
Replies: 4
Views: 1594

Re: EMG Sensors & Arduino

I'm not working with these sensors yet but I'm interested in them. Have you found a source of electrodes? I found a source (Jameco) that sells a sweet little low noise high performance differential instrumentation amp suitable for the purpose (i believe so, could be wrong about that), and I can desi...
by LesHall
Sun Feb 22, 2015 2:19 am
Forum: Myoelectric
Topic: Brain Wave Sensors (Neurosky in Particular)
Replies: 2
Views: 1284

Brain Wave Sensors (Neurosky in Particular)

Hi, Long story short, I bought a Neurosky MindWave Mobile last night! Woot! I'm on my way to doing mind control of all kinds of things. I chose this model for a few reasons, the main reasons being it's the least expensive one on the market and it's got a Processing library. These two factors make it...
by LesHall
Sun Feb 22, 2015 1:45 am
Forum: General R&D
Topic: Spidey Sense! A Practical Implementation
Replies: 17
Views: 5284

Re: Spidey Sense! A Practical Implementation

Drew,

TY, I occasionally peruse the catalogs of cool suppliers to be aware of stuff like that!

Les
by LesHall
Wed Feb 18, 2015 5:30 am
Forum: General R&D
Topic: Spidey Sense! A Practical Implementation
Replies: 17
Views: 5284

Re: Spidey Sense! A Practical Implementation

I'd say FSR's (Force Sensitive Resistors), as they come in little button-sizes and offer proportional indication, just put them in voltage dividers and hook them up to analog inputs. Probably need to mount them underneath rubber tips and need a way to guide the wires.

Les
by LesHall
Tue Feb 17, 2015 3:04 pm
Forum: General R&D
Topic: Spidey Sense! A Practical Implementation
Replies: 17
Views: 5284

Re: Spidey Sense! A Practical Implementation

Laird, we're in luck! Today's ultra bright LEDs use very low power to produce lower light levels. A solar cell charging a super capacitor would do the job if it could be charged for a few hours each day, i.e. normal use should keep the thing charged indefinitely. Not sure what type of touch sensor w...
by LesHall
Tue Feb 17, 2015 7:42 am
Forum: General R&D
Topic: Spidey Sense! A Practical Implementation
Replies: 17
Views: 5284

Re: Spidey Sense! A Practical Implementation

I just want to finish tonight's set of posts on this topic with a bit of a discussion about where we are going with all this. For starters we have the test circuit of the previous post which does the not-so-amazing task of sensing light intensity and displaying it as (guess what?) light intensity! H...
by LesHall
Tue Feb 17, 2015 7:21 am
Forum: General R&D
Topic: Spidey Sense! A Practical Implementation
Replies: 17
Views: 5284

Re: Spidey Sense! A Practical Implementation

http://www.ecs.umass.edu/ece/m5/images/CdS_Cell_Schematic._S.jpg Above we see our starter system which will e-NABLE us to get things up and running with the circuitry, the power, the programmer, the wires and bits and pieces and whatnot, etc. Other more interesting sensors and actuators will follow...
by LesHall
Tue Feb 17, 2015 6:53 am
Forum: General R&D
Topic: Spidey Sense! A Practical Implementation
Replies: 17
Views: 5284

Re: Spidey Sense! A Practical Implementation

http://4.bp.blogspot.com/-nIRyuGu1xgc/Uo3mnTH8BOI/AAAAAAAAAn4/Lw3Tj1TWq1c/s1600/ATtiny85_PinOutDiagram.png Above we see the core of our sensor system, the ATtiny85 processor. It's an 8-pin DIP (Dual In-line Package) chip so it's about as small as it can get and still be breadboard friendly. Regardi...
by LesHall
Tue Feb 17, 2015 6:20 am
Forum: General R&D
Topic: Spidey Sense! A Practical Implementation
Replies: 17
Views: 5284

Spidey Sense! A Practical Implementation

So you want a Superhero hand, be ye fingered or fingerless, palmed or half-palmed, "normal" (whatever THAT is) or uniquely gifted, you want Spidey Senses! Surely most of us know that The Amazing Spider Man, as part of his Spider-like transformation, was gifted with a mysterious sixth "...

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