Once you get passed the attraction of the free samples it seems you can actually buy these chips from Digikey in 1 off quantities at $2.49 each.
For sure a lot of other port expanders can be had for that price which are actually usable.
AHA... heater mentioned that I never did. I was most seriously considering the usage.
not as a quest but as a possibility. And certainly not for the freebies.
The first thing that catches your eye on the TI page you linked to is "Free Sample" on a bright red background.
I may have been presumptuous but I have seen people running around for free samples only to get themselves into a mess when the chip in question turns out to not be easy to get generally or is hard to use, like this one.
And I think it'll be my final solution for the core of my controllers.
THANK YOU to all that helped.
If you end up with a board THAT big you may as well use the 23017s in SDIP28 yourself, at least you can plonk them on any bit of protoboard and they are the same pitch as the huge pin headers and can just be tracked 8 on each side etc
The first thing that catches your eye on the TI page you linked to is "Free Sample" on a bright red background.
I may have been presumptuous but I have seen people running around for free samples only to get themselves into a mess when the chip in question turns out to not be easy to get generally or is hard to use, like this one.
Well it's been my experience that you would have to register as a "valid" buisness before any such free sample would be offered. As a regular human I don't qualify most likely. So I'd ignored that on the page. When I'd skimmed your response earlier. I'd also glossed over that for the same reason. No worries.
Of cause the pitch of the device Tubular hand soldered and the tiny TCA6418E are very different.
@sumdawgy, I don't suppose you want to tell us what you're trying to do? As Heater mentioned earlier, adding extra outputs and inputs to a Prop can be very simple. I doubt I'm the only one thinking you're making this harder than it needs to be.
When I first saw Tubular had replied to this thread I thought he was going to point out how it is possible to hand solder BGA components.
@sumdawgy, I don't suppose you want to tell us what you're trying to do? As Heater mentioned earlier, adding extra outputs and inputs to a Prop can be very simple. I doubt I'm the only one thinking you're making this harder than it needs to be.
I went with the 23017 suggestion. And, I did hear about Tubulars bga success. (via the grapevine.)
When I first saw Tubular had replied to this thread I thought he was going to point out how it is possible to hand solder BGA components.
@sumdawgy, I don't suppose you want to tell us what you're trying to do? As Heater mentioned earlier, adding extra outputs and inputs to a Prop can be very simple. I doubt I'm the only one thinking you're making this harder than it needs to be.
OH!
I mentioned ..maybe not in this thread. ... My next project is automating my home's lights. And of course, other targets of opportunity.
I don't really want a commercial product. I want a very personal homegrown security schema. So no one can easilly knock on it's doors.
(I won't be posting certain key added elements in the finished project towards that end..although i will leave vague suggestions towards a myriad of possibilities.)
I'm less concerned with tens of inputs as I am with hundreds of outputs....does that help clarify?
I didn't post another thread on this in the forum yet. as I'm still getting parts from macetech, eBay (oh and) & parallax.
[My wife is not exactly pleased with the arrival of so many little packets.]
And yes, I've abandoned the micro soldering as an option. . . . .For THIS project.
Comments
wait.. what freebies are you talking about?
AHA... heater mentioned that I never did. I was most seriously considering the usage.
not as a quest but as a possibility. And certainly not for the freebies.
I wouldn't waste anyone's time on anything less.
I still haven't gotten a price o nthe socket yet.
But I've found this from macetech based on the 23017.
And I think it'll be my final solution for the core of my controllers.
THANK YOU to all that helped.
The first thing that catches your eye on the TI page you linked to is "Free Sample" on a bright red background.
I may have been presumptuous but I have seen people running around for free samples only to get themselves into a mess when the chip in question turns out to not be easy to get generally or is hard to use, like this one.
If you end up with a board THAT big you may as well use the 23017s in SDIP28 yourself, at least you can plonk them on any bit of protoboard and they are the same pitch as the huge pin headers and can just be tracked 8 on each side etc
Have fun!
Well it's been my experience that you would have to register as a "valid" buisness before any such free sample would be offered. As a regular human I don't qualify most likely. So I'd ignored that on the page. When I'd skimmed your response earlier. I'd also glossed over that for the same reason. No worries.
Well for 24$ I can save a lot of time (if not space) and the pin headers correspond to my relay boards from ebay.
And yeah, it's time for my next step.
Well for $24 it's worth it then, go for it. Now we will wait and see what you "dream" up now
Above is a photo taken from Tubular's Telit 865 thread.
Of cause the pitch of the device Tubular hand soldered and the tiny TCA6418E are very different.
@sumdawgy, I don't suppose you want to tell us what you're trying to do? As Heater mentioned earlier, adding extra outputs and inputs to a Prop can be very simple. I doubt I'm the only one thinking you're making this harder than it needs to be.
I went with the 23017 suggestion. And, I did hear about Tubulars bga success. (via the grapevine.)
OH!
I mentioned ..maybe not in this thread. ... My next project is automating my home's lights. And of course, other targets of opportunity.
I don't really want a commercial product. I want a very personal homegrown security schema. So no one can easilly knock on it's doors.
(I won't be posting certain key added elements in the finished project towards that end..although i will leave vague suggestions towards a myriad of possibilities.)
I'm less concerned with tens of inputs as I am with hundreds of outputs....does that help clarify?
I didn't post another thread on this in the forum yet. as I'm still getting parts from macetech, eBay (oh and) & parallax.
[My wife is not exactly pleased with the arrival of so many little packets.]
And yes, I've abandoned the micro soldering as an option. . . . .For THIS project.