mods on it. After a great deal of fruitless searching my ISP has informed me they no longer provide access to alt.binaries hierarchy and couldn't or wouldn't give me a reason! The netlist is just ascii so could you post it here, perhaps?
-- Yes, but it uses different parts than those supplied with LTspice so you couldn't see the schematic properly, or run it. If you email me your email address I'll get the files to you that way.
her mods on it. After a great deal of fruitless searching my ISP has inform ed me they no longer provide access to alt.binaries hierarchy and couldn't or wouldn't give me a reason! The netlist is just ascii so could you post i t here, perhaps?
You're a gentleman, sir.
I'd like to stick to something close to the original concept. The circuit John Fields posted, if it can be fixed-up, would be close to ideal for me.
complicated? it is an 8pin part and a few lines of code
-Lasse
n.
hy I'd like to stick to something close to the original concept. The circui t John Fields posted, if it can be fixed-up, would be close to ideal for me .
Yes. Complicated for *my* modest needs. I don't require a Raspberry Pi or e ven a mere PIC for a 7 day timer!
ion.
why I'd like to stick to something close to the original concept. The circ uit John Fields posted, if it can be fixed-up, would be close to ideal for me.
even a mere PIC for a 7 day timer!
guess there's different kinds of complicated there': a 50cent pic/avr etc. with everything including the oscillator in a 8 pin package and then there's a whole gaggle of logic ic's and some sort of oscillator
-Lasse
like to stick to something close to the original concept. The circuit John Fields posted, if it can be fixed-up, would be close to ideal for me.
-- Actually, it's a little more complicated than that since to get the timing exactly right, going that way, one needs to consider the instruction execution time. Have you considered that?
I'd like to stick to something close to the original concept. The circuit John Fields posted, if it can be fixed-up, would be close to ideal for me.
uP's are the "solution" to all problems... and generally also the failure mechanism. ...Jim Thompson
--
| James E.Thompson, CTO | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
The solution for those who can't think through the actual circuit logic needed, to do it without a processor. As someone who has seen too much poorly designed crap with a PIC, I prefer a real design that can be repaired in a few years when the PIC of the week is NLA.
The closest I've come is a number of my chip designs now include a self-calibration procedure built-in. "Almosta" uP, but not quite :-) ...Jim Thompson
--
| James E.Thompson, CTO | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.
So divide it twice. 30,240,000 must have two factors that make the design simple. Choose one to be a large power of two for elegance and just brute force the other divider.
You know quite well that the hardware complexity of a micro- controller solution has nothing in common with that of wired logic.
The hassle of installing the software, learning the chip's structure and language, getting to grips with flashing the thing, etc. is a good deal more involved than wiring a few CD4017s together. Of course, once you've mastered all that, the project becomes immensely easier and blows most slow discrete logic designs completely out of the water.
It's a hurdle, to be sure, but it's worth the investment.
Jeroen Belleman
on.
why I'd like to stick to something close to the original concept. The circu it John Fields posted, if it can be fixed-up, would be close to ideal for m e.
have you? where, in counting the number of timer ticks until you reach 7 days, does instruction time enter the equation?
you are concerned about the few nanonseconds it takes to set an output when the 7 days has passed?
-Lasse
ion.
why I'd like to stick to something close to the original concept. The circ uit John Fields posted, if it can be fixed-up, would be close to ideal for me.
so are transistors ic's etc. I don't see the difference
-Lasse
like to stick to something close to the original concept. The circuit John Fields posted, if it can be fixed-up, would be close to ideal for me.
Do you now of a cheap usb pic programmer with linux support?
-- ?? 100% natural --- news://freenews.netfront.net/ - complaints: news@netfront.net ---
I'd like to stick to something close to the original concept. The circuit John Fields posted, if it can be fixed-up, would be close to ideal for me.
microcrontrollers typically have internal counters. just set one of them at a suitable rate etc...
-- ?? 100% natural --- news://freenews.netfront.net/ - complaints: news@netfront.net ---
o
or maybe those who insist on gaggles of logic chips when a mcu is a better simpler cheaper solution is those who are too old to understand them
a processor isn't always the right solution but more and more often it is, and dismissing it as "not a real design" that is just stupid
-Lasse
on.
why I'd like to stick to something close to the original concept. The circu it John Fields posted, if it can be fixed-up, would be close to ideal for m e.
I've not used pic
for AVR I build one of these:
but you can get one based on the same design all over the place for a few $
it should work out of the box on linux, Mac and with libusb on Win
-Lasse
I'd like to stick to something close to the original concept. The circuit John Fields posted, if it can be fixed-up, would be close to ideal for me.
Why wait a week for the auction to end when you can BIN for $3.42 US?
I'd like to stick to something close to the original concept. The circuit John Fields posted, if it can be fixed-up, would be close to ideal for me.
PICkit 2 or 3 has Linux support, depending on what exactly you need- IDE/debugger, command-line programmer etc. The genuine ones are $45 at Digikey, clones of the PICkit 2 are available starting at $10 or so. Supports a wide range of uChip chips.
Lots of different chips in the $0.50-$2 range in small quantities.. and many of them include usable power-on reset circuits and other useful peripherals.
It used to cost the equivalent of six month's salary for an engineer to get a crappy pokey emulator- now you can do it for a few minutes worth of time.. and the tools are infinitely better.
Best regards, Spehro Pefhany
-- "it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com
I'd like to stick to something close to the original concept. The circuit John Fields posted, if it can be fixed-up, would be close to ideal for me.
-- Just as I thought...
ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.