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Re: Making custom sensors: What would be the demand?
Posted: 20 May 2012, 13:25
by mightor
Doc,
I suppose it will be powered by the new anti-matter powered nano-batteries you've been working on in secret?
- Xander
Re: Making custom sensors: What would be the demand?
Posted: 20 May 2012, 13:32
by inxt-generation
No, No. It'll be powered by Xander's new "making power while running code" microcontrollers, right?
Re: Making custom sensors: What would be the demand?
Posted: 20 May 2012, 13:39
by HaWe
yes, Xander is right, but combined with superconducting solar panels...
making power by "power running code" is not possible because I only use NXC and so there are missing features by NXC (stack, heap, pointers, and pass-by-reference) which are strongly required for this implementation :)
ps
I also have a core of an old Israeli Atom Bomb which they once lost by a Starfighter mission during the Jom Kippur war. I discovered it in a geological depression on Golan during one of my last holidays in Middle East.
But then I suppose I will need to have my Tetrix back because of stability reasons...
...Ben...?
Re: Making custom sensors: What would be the demand?
Posted: 20 May 2012, 20:51
by HaWe
inxt-generation wrote:doc-helmut wrote:design proposal for a NXT-compatible Super Cube Sub System:
- connected to NXT by RS485
- external power supply (1-4x 12V RC blocks 4500 mAh each)
- 12 NXT encoder motor outputs
- 6 heavy duty PWM DC motor outputs (5A each)
- 6 external i2c highspeed ports (chainable; adjustable: 400kbps highspeed for external encoders or 100kbps lowspeed for other i2c standard sensors, high current supply)
- 6 RC servo ports (chainable)
- 12 analog sensor inputs
- 12 NXT compatible "i2c" sensor inputs for single "i2c" Sensors with super-slow motion 9.6 kbps and built-in pullups
- 4GB SD card slot
- connectors placed at all sides and the face.
compared to the prices of 4 single NXTs, the prices of tetrix accessoires, and the prices of several already available 3rd party motor- and sensor muxers it may cost round 1000 US$ (or even 1000 EUR or - in case - 1,000,000,000 Future Greek Drachmes ^^)
well, that's - more or less exactly - what I need
(my target are Real-World-ROBOTS - not tinkering toys)
:)
Re: Making custom sensors: What would be the demand?
Posted: 20 May 2012, 21:00
by mightor
Real world robots cost a lot more than tinker toys
Are you prepared to spend the big bucks real world robots require?
- Xander
Re: Making custom sensors: What would be the demand?
Posted: 20 May 2012, 21:17
by HaWe
yes, Sir.
I already spent 1500 EUR for Tetrix, about 500 EUR for 3rd party sensors which are not worth their money, 500 EUR for 4 NXTs and 200 EUR for multiplexers which sh** on compatibility....
Money for nothing (and not even at least chicks for free^^)
Re: Making custom sensors: What would be the demand?
Posted: 21 May 2012, 05:10
by mightor
Have you ever considered getting something like this?
http://turtlebot.com/ /
http://ros.org/wiki/Robots/TurtleBot
- Xander
Re: Making custom sensors: What would be the demand?
Posted: 21 May 2012, 17:19
by HaWe
I see that for the first time (admittedly I haven't been looking around for other systems very closely). But it looks really nice - I will have to look more closely how the sensor and motor interfaces and the software are designed.
Re: Making custom sensors: What would be the demand?
Posted: 26 May 2012, 12:52
by inxt-generation
My tests of the pressure sensor seem pretty good. It looks to me as if it was designed for a 10-bit ADC. Using my LEGO air meter, 30 PSI = 300 ADC. 40 PSI = 400 ADC. That's pretty good! In fact, I may just need to divide the value by ten to get the PSI! So easy!
Re: Making custom sensors: What would be the demand?
Posted: 26 May 2012, 13:57
by mattallen37
What pressure sensor are you using?