Kermit - Viewing Profile: Topics - Netduino Forums
   
Netduino home hardware projects downloads community

Jump to content


The Netduino forums have been replaced by new forums at community.wildernesslabs.co. This site has been preserved for archival purposes only and the ability to make new accounts or posts has been turned off.

Kermit

Member Since 30 Mar 2012
Offline Last Active May 24 2012 06:02 PM
-----

Topics I've Started

General Utilities

16 May 2012 - 05:43 PM

Hi to everybody. You know I'm a software guy, so, after having been helped so many times here, I try to give something back, even if I know I don't have the electronics expertize to be sure that I'm going in the right direction. So I invite you to read the readme, and, if you want, take a look at the code: I would like to receive some feedback by the experts, to understand if I'm going on the right direction, or if I'm missing something important, like performance, memory size, and I don't know what else... Andrea

TLC5940

02 May 2012 - 06:59 PM

I'm looking for some examples (wiring diagram & code) on how to use this IC without any special function (just to start with setting PWM output values, no corrections, nothing).
There is already another thread, where I asked for info, http://forums.netdui...h__1#entry18925 but I see that it doesn't come up on the list (maybe it's too old), so I start a new thread here.
I found very difficult even only to understand the needed wiring, so a very very short mini-tutorial would be really appreciated (not only by me, I'm sure...).
Thanks in advance
Andrea

PIR Murata E710 ST0

01 May 2012 - 11:12 PM

Is there anyone who knows if I can use it directly connected to the Netduino, or if I have to build some control circuit? Documentation at http://www.murata.co...og/pdf/s21e.pdf, the original Murata site, is of no use, or at least I think...
I tried to use the sample code I found at http://forums.netdui...h__1#entry17181 and http://forums.netdui...h__1#entry26933 thinking that it would be the same, or similar, but no way... :-(
Andrea

Many many PWMs

21 April 2012 - 11:09 AM

Since my other thread is getting long (Train models), I start here a new thread for a subproblem: how to drive, for example, 20 PWM signals from a single Netduino.
Yes, the first straight answer could be to buy more Netduinos, but it's not only a cost problem: then I'd have to sync all together, that would be another big problem!
What I'm thinking about, is there some solution where I first select an 'address' (to be considered in a wider sense...), and then I set a duty cycle? The 'subcircuit' (or something like that) should retain that value, be self-powered, and going on supplying the exact pulse until maybe I re-select the same 'address', and put out a new value.
The first idea coming to my mind is to use many shift register chained in SPI, where, using the output pins of each shift register, put out a 'value' to feed to something else to be used as a PWM source (and obviously I don't know how to create such a thing...).
I googled everywhere, but I couldn't find any good start, so I'm really at zero! :-(
Is there anyone pointing me to a good direction?
Thanks in advance
Andrea

How to drive train models

30 March 2012 - 09:36 PM

Hi to everybody. As a software programmer, I have a very small knowledge (and all theoretical!) about hardware at this level. So, my problem is: a friend of mine has a very large train model set (five groups of rails, 15 trains, 10 meters by 3), all handled in analogical (kilometers of wires! :-)). So I told him I could help, trying to use a netduino to handle all the problems, but now I realize I don't have the necessary experience. So, just to start, I focused the first two problems: - Rail exchange is handled by a 16V AC line: to move the rail in one of two positions, you have to close one of the two circuits (ground is common), and just with an impulse. Which kind of relay/transistor do I have to use? - Traffic lights, rail exchange, other lights: all need wires, and on a 10x3 meters set, there are a lot of them. I'm thinking to some sort of bus (I2C?) to minimize the number of wires, but then, again, which kind of solution may I imagine? Theoretically, I would like to have some sort of I/O controller with for example 16 pins, and being able to connect to it from a distance of 5 meters, or something like that; from there, I would have to use way less wires... Anyone so kind to give me at least the directions where to look for? Thanks in advance to anyone, and excuse my poor English... Andrea

home    hardware    projects    downloads    community    where to buy    contact Copyright © 2016 Wilderness Labs Inc.  |  Legal   |   CC BY-SA
This webpage is licensed under a Creative Commons Attribution-ShareAlike License.