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Well, found something and thought of sharing. Looks like most of the headaches and rear-pains can be prevented by reading, rather well-documented data-sheets, app-notes.
I am guessing that most people felt pain when they assumed SIM900X series to be a "drop-in" replacement for SIM300X series...
Hi Folks,
Have a prototype working reasonably with SIM300, but have been told that SIM300 is an obsolete product and that I should move to SIM900B. On researching here a bit, I found that people have reported lots of problems with SIM900B, while making the move from SIM300. The problems...
Great find. I had to triple-check that site to make sure that I am not reading "micro" when it should say "milli". Honestly, no idea how they got it so low. This is the first PIR device, I've seen running at 3VDC. OTOH, **broken link removed** seems to have a current drain that I am certainly...
@JP
your passive monitoring, and activation using mechanical switch is a nice idea, but there are few things to keep in mind -
- time required by most uC's to startup ranges between 50-100ms (from power-on / reset)
- GSM modems will require the uC (once start up) to handshake, set up the...
@JF... GSM modules are power hungry, i mean, when compared to rest of the electronics. Also driving relays requires good deal of energy.
Finally the sensors, based on type, may require good bit of power as well. Remember that many of your sensors are actually always-on, and only some are based...
I guess, you meant a regular ANSI-C compiler used for application programs, and without any proprietary extensions.
Such a compiler would compile Embedded-C programs for as long as it is a proper subset of ANSI-C, and doesn't use any unusual or invalid pragmas.
Also it should find the header...
Hi,
Anyone knows of how to gain access to a good Oscilloscope (DSO preferred, with at least 50MHz bandwidth, 2-Ch min) in Bangalore ?
I am willing pay (something reasonable) for using the equipment, for few hours over of couple of days. Willing to travel down to any part of Bangalore.
If you...
Re: Low cost GPS/GPRS Tracker for India
In that case, you are looking for cake in a grinding mill :-)
Why not check out tradeindia.com and ebay for starts.
Re: Low cost GPS/GPRS Tracker for India
Are you are looking for a finished product, or kit ? You didn't mention application. Is it for vehicle tracking or something else ?
Thanks @FvM. I am definitely going to try directly interfacing the encoder/decoder chips with my MCU. I am experimenting with Atmel AVR attiny2313 and also MSP430G2's, and I am sure of Atmel AVR, that those are the modern true GPIOs, and suspect the same for MSP430s as well.
Thanks @wp100. Actually 74125 seems to be perfect, though 8 lines would've been great. I guess there would most certainly be one.
---------- Post added 23-10-11 at 00:05 ---------- Previous post was 22-10-11 at 23:31 ----------
Thanks @FvM. As for speed, it's a very low speed application...
Hello,
Would like to hold a certain number (say 8) of pins of an IC, in a combination of "floating", "high", "low" such that this combination may change over time. As for holding the pins "high" and "low", I know how to do that pretty well, via a MCU, but not sure how to hold a line "floating"...
Re: Buying ATINY's in Bangalore, where ?
Electronic Component Suppliers,Electronic Component Manufacturers,Exporters and Suppliers India
"Welcome to SOURCE TECHNOLOGI – The leading wholesale supplier of electronic components."
and then in another page...
"Note:
Retail quantity shall be...
Re: Buying ATINY's in Bangalore, where ?
Did check Om electronics (the old shop), and they redirected me to Darshan (is it the same as the new robotics oriented Om, 'coz I never found it). Also did check Ankit (it's the one who specialize in SMD right?). Will check the rest on the weekend...
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