The last picture shows the proper connection. 3 to Vcc, 1 to Gnd, or the opposite!, and the wiper, 2, to an analog inout of the controller. No pullup nor any pulldown!
Refer to website ATtiny microcontroller comparison chart - Wikipedia
The column that shows ADC pins is the analog pins of the microcontroller. So the following have atleast 4 analog pins (A0, A1, A2, A3)
ATtiny15L
ATtiny13, ATtiny13V, ATtiny13A
ATtiny25, ATtiny25V, ATtiny45, ATtiny45V, ATtiny85, ATtiny85V
I suggest ATtiny85.
I want to builf a RFID SmartSwitch... something like: putting your RFID, and than your TV, Computer and other stuff will turn on... you know that: if you come home from work, Switching too many devices on, takes too much time.
Or another idea which I will do later: waking up at morning, than your water heater turns on, your computer turns on, and other stuff.
Most of us use the Chinese knock-offs which are (or used to be before the plague) inexpensive and in fact, hardly more than the ATtiny chip itself, certainly cheaper than assembling all the necessary parts.
A UNO is not at all suitable for most practical applications in any case; if you need USB connection then a Nano, otherwise a Pro Mini neatly contains on a board all the basic operational parts (and a couple of unnecessary ones - the regulator and the pilot LEDs though the pin 13 LED can be useful).
Thank you falks, for all you answers... but I think u all understood me wrong. I am looking for a ATiny with at least 4 ADC and 8 GPIO pons... but (now the Important problem):
It should not be a original ATiny. It should be a no name Mikrocontroller but with compareable functions like ATiny..
