I want to use radio control in a project and I need to send just few characters
and I'm searching for the smallest possible chip available and programmable
using the IDE and cheapest one.
Any idea ? and yes I know about ATTiny chips
D.60
Any idea ?
Look up the prices.
Look up the prices.
Where?
Where?
WalMart, of course.
Where would you be buying the chips? Don't you suppose that it is their prices that matter? If Jersey Mike's sells an AtTiny4 for 39 cents, and charges you $12.95 apiece to ship them to you, that's not such a great deal, is it?
We have no idea who you plan the buy the chips from.
Frankly, I can't see how saving a few cents on the chip has ANY relationship to use radios for some undefined purpose.
Arduino "pro mini" or "nano" clones can be had from Amazon, Ebay or various chinese ecommerce sites for less than $5 although you shouldnt order just one since the quality can vary. Nano is larger and slightly more expensive but has an on-board USB socket so you can program them with a plain USB cable. Pro mini is smaller and cheaper but you need a USB to FTDI converter for the programming. There are smaller dev boards for niche applications but these are generally more expensive. As others have said, if you give more specifics of your application you are likely to get more detailed help.
I am using an SOIC Attiny 1634 with an nRF24L01+. The Attiny 1634 is nearly as powerful as an Atmega 328 but is physically much smaller and cheaper. It is considerably smaller than the nRF24 so I don't see any value in a smaller Attiny.
This image is from another Thread.
The copper wire nearest the camera is a support for a DRV8833 h-bridge.
The two wires at the end are (furthest away) Tx for debug messages and (nearer) Reset for programming.
...R
Frankly, I can't see how saving a few cents on the chip has ANY relationship to use radios for some undefined purpose.
Mass production can have a big effect in price, ofc im not talking about mass production but at least hundred of chips.
The Attiny 1634 is nearly as powerful as an Atmega 328 but is physically much smaller and cheaper.
Comparing the prices with the atmega328 i see that the att.1634 1 pcs cost 3$ and the 328-au 1pcs cost 1.5$ kinda .. well at least from the place where i provide my chips the price is cheaper for 328.
Ebay or various chinese ecommerce sites for less than $5
Yes I know I provide all my electronics from direct chines manufactures so I get them with really
low price, for example I got few weeks ago a pro micro with the price of 2$
I miss lead a bit the topic writing about radio control, I will not solder directly the chip with the
radio control module that I use, I just need the chip to deliver a signal 0-1 or multiple characters thru a
code that i'm running. I need the chip to have as less pins possible.
D.60
Small does not necessarily equal cheap.
Anyway, have you considered a 6 pin ATtiny 4/5/9/10 in SOT housing (about 3x1.5mm) or UDFN (2x2mm) for size?
PS
No idea if those can be programmed using the IDE.
I think the ATTiny45 is the smallest chip that can be programmed with the 'out of the box' IDE. You could, of course, write (or find) a core for any chip you want.
But really, don't worry about cost and size until after you have a prototype running exactly like you want. Then go for the cost & space saving once you are ready to begin production.
With this IDE add-in,
you can program Attiny24 and Attiny25, not sure which one is "smaller".
Domino60:
Comparing the prices with the atmega328 i see that the att.1634 1 pcs cost 3$ and the 328-au 1pcs cost 1.5$ kinda .. well at least from the place where i provide my chips the price is cheaper for 328.
Interesting. I think mine cost about 50% of the price of a DIP 328
...R