I believe you might be trying to make an analog output by using a PWM voltage signal and a low pass filter?
If that is the case then yes, you can do that easily by choosing your PWM frequency and designing the filter cut-off well below said frequency. Then it will average your PWM voltage and give you an analog voltage. But you need (at least) a resistor and a capacitor to make the low pass filter.
I once got an awesome battery pack (from an RC remote control), I plugged it in, then came back 30 min later and my batteries were super hot, I looked at my circuit, my voltage reg, was backwards! That was about a month ago...
Actually, I left for dinner and a grocery store visit! :D
I then watched an episode of NUMB3RS (I don't like it for the fake-math nature of it, but I do sometimes like the storyline. I treat it like sci-fi... cool, but not within reach just yet.), and soldered my first set of headers onto an LCD!
Well... yeah. There's just one joint that looks a little sketchy. Re: tinning tip: I did the best I could--I got the very tip of the tip, but I couldn't get the rest of it--the solder kept beading up. I've gotta get some flux
@DavidKessner yeah... I was watching some of the youtube tutorials on soldering, and most seemed to rely on the flux in the core of the solder, unless they were doing something odd like SMD. After trying it, I think I'll find some flux... :)
Do you know what type of store flux would be sold in? I don't know if there's any real electronics hobby shops near where I live.
@anorton I use liquid water soluble flux in a bottle with a needle-like tip. Works great, but one major downside is that it is conductive and must be cleaned off.
@anorton Yeah, you need an electronics hobby shop or buy online.
I can't find the flux that I use. It is made by Kester, and unfortunately sold by the gallon. This is the closest I could find. I should mention that flux does get too old, and there is no way you can work through a gallon in less than 5 years (and it usually goes bad after 2). amzn.com/B00023EDNU
Damn, now I'm annoyed. I need to get more flux for the lab, and I can't find what I like...
@AnindoGhosh My problem is that I'm a late-to-bed person, but I have to rise early too. After a while it catches up with me, like tonight, and now I'm just tired.
@AnindoGhosh We had a big discussion about him a day or three ago. He caused a big mess that the mods had to clean up. He posted something about "scalar waves", and when I pointed out that if they existed at all then they would violate the known laws of physics. At that point he went non-linear, calling me every name under the sun. We're talking TS level of crazy.
hey guys, I am an EE student. I am having some trouble understanding why RL circuits dissipate more power as the resistance goes up, but RC circuits dissipate less power as the resistance goes up.
Physically what is happening here?
RL
My thoughts on this are that the inductor supplies a certain current, and current through a larger resistor dissipates more power.
RC
This one I'm not so sure about. I would say the same about voltage, but I think the current caused by this voltage will be ...
@jippie I don't know - I'm missing all the fun anyway, this last week or so. Today too, I'm off most of the day on a meeting. Hoping the meeting turns out productive, it's important for me.
@StaceyAnne Unfortunately, I can only check the prices of these distributors and imagine the day I could buy from them. Yeah, being an engineer in Turkey market sucks.
I cannot go out and say, oh, yeah, I am going to use this IC and optimize my design a lot!
No, instead an engineer in Turkey should say; "Oh, yeah, I will go and optimize my design so that it uses parts that I can find in the local market!"
I'm going to be in europe from the end of december
not exactly sure about the order yet, in terms of which country we visit when. I'm probablyt going to try and stay somewhere where winter is a bit warmer for the first part of the year
it works out about the same for him. my taxes pay off my flight, his pay off his flight. we don't think about it that way - we work it out together, but the numbers just essentially double
my speciality is fw for FPGAs, I have my own devboard that I use to prototype code and it goes everywhere with me. My client asked me to design a cct for him
yeah. It's awesome. he's literally 5 ft away from me at all times. we're like coworkers.
I have literally spent 24/7 with my husband for the past 9 months
I think I can count on 1 hand the number of hours I've been more than speaking distance away
anyway, this is kinda soppy for the EE chat, but as a girl it brings a huge amount of security to have him by me all the time. I feel like I have my own personal bodyguard
Is there any way I can find what parts are drop in replacements for other parts? For example, It took half an hour to discover that M24C02-RMN6P was replaced with M24C02-RMN6TP. is there an easier way to get this information?
@StaceyAnne, in the good old days you'd pull out your transistor substitution guide ;-). But I don't think you're missing anything, some manufacturers do a good job of listing recommended replacements and some don't. Some (and their suppliers) are also proactive and I've received e-mails in the past to warn a part I've purchased is becoming end-of-life with recommendations on a migration path.
@DavidKessner from opencores.org, we can get so many ready made code for many block.but i dont know how to integrate those modules for xilinx.i am not well in VHDL/verilog
@StaceyAnne from your previous chat with abdullahkahraman you mentioned work in online.how do you test the firmware on hardware(how you are able to connect with remote hardware)
@anorton Uh oh, that's bad, the sparkfun solder does have flux in it (I bought the same kit), I used that same solder and iron and the same thing happened (solder balling up and falling). Meaning it's the end. You will probably need to buy another (different iron) and some different solder.
@yogece Excuse, I did not read my msg, I meant: No, I kind of want to stay away from beagle bone, they seem to have less for more $ than the raspberry pi, they don't seem to have that open-source feeling either...
@coding_corgi, the processor based PC is really good at being flexible. I can use a PC to perform any operation that I want to by writing code telling the processor what to do. An FPGA is the opposite of a processor, in that I can tell the FPGA what to do, and it will be able to do that thing, and only that thing, in a very optimal, very efficient way. with no process wastage.
@MLM There is now an official Arduino board called the Due, that is ARM based. Programming is in the Wiring language (variant of C++). There is also the Texas Instruments Stellaris Launchpad (and recently the Tiva Launchpad, ARM Cortex M4)) for a mere $12.99 including international 3-day FedEx. This is programmed in C++.
@MLM The Tivo Launchpad will take 3 months to reach the market, though. The Stellaris ARM Launchpad is available now.
@coding_corgi I'm trying to understand why a product that will become available around a year from now, and is priced at 10x the price of competitive products, would be "better".
@coding_corgi None of the Texas Instruments Launchpad products are programmed in Wiring. Wiring is what Arduino uses, and I'm not even sure your comment is warranted there, in that the language used on the Arduino is the same language Atmel ships its AVR-GCC for. Are you making a considered statement, or just saying something to say something, please?
@coding_corgi See this: Programmed in straight regular C++, has an ARM Cortex M4, is available today, and is 12.99 inclusive of international shipping: estore.ti.com/Stellaris-LaunchPad.aspx
@coding_corgi As a matter of fact, the Stellaris Launchpad has two processors, the second being used for real-time, in-circuit debugging of the main one which you program. What would you need to achieve that with an Atmel board?
Physically what is happening here?
RL
My thoughts on this are that the inductor supplies a certain current, and current through a larger resistor dissipates more power.
RC
This one I'm not so sure about. I would say the same about voltage, but I think the current caused by this voltage will be ...
