REQ schematics for multivibrator

[Parmin]

6 pin pics are from 30¢ ...  THIRTY CENTS each
and on top of that you need a 100n decoupling cap which is about 1¢
and you got a working circuit to match umpteen components of the LM555 circuit.

You cannot beat the minimum component count of TWO with total outlay of 31¢ !!!


Where is this cock and bull story about fishing and FM transmitter?
Are you planning to dance with the fish?
talk them to death?
new remote controlled suicidal fish terrorist?


Why is it always whenever payments are mentioned, the problem miraculously solved?

[Ichan]

You cannot beat the minimum component count of TWO with total outlay of 31¢ !!!

Absolutely agree, but I guess for Jeckson he will need to add another $60 for shipping cost.

-ichan

[Jeckson]

Seriously, minimum parts and minimum size could be a PIC10F202 in a SOT-23-6 package.
Would not eat as much power as a 555 and can program to meet your needs.

6 pin pics are from 30¢ ...  THIRTY CENTS each
and on top of that you need a 100n decoupling cap which is about 1¢

Hmmm...0.3 US??,0.30.3 EU? GBP? 0.3 EU?

Regards.
Jeckson

[pickit2]

Where is this cock and bull story about fishing and FM transmitter?
Are you planning to dance with the fish?
talk them to death?
new remote controlled suicidal fish terrorist?

Why is it always whenever payments are mentioned, the problem miraculously solved?

Reason why the transmiter is a lot of fisher men use 3 lines for example, when fishing for carp.
Microchip shipping costs are about $60, any size of order, even samples are charged now. but again if
use farnell.com, or rs.com once you spend (£20 or the same in local currencey it is free)

I remember opening a non-working bite sounder a long time ago,(20 years or more) and main ic was a 4093, buzzer and a few R's & C's.
I used the ciruit in a few alarm systems I built, one 4093 and two zone alarm and 20mins bell cut-off.

[Jeckson]

Simple things sometimes intriguing, and I understand the difficulties on sourcing "sophisticated" components in his place (Makassar?)

So here is my trial with the objective are minimum cost and easy to find components, at least it works on Proteus. Just don't push the two buttons at the same time - that's your home work

Great..Ichan.

Did Ichan already simulated that? seems with numbers of transient voltage and simulation stopped.
When I added low resistance load..It work's at numbers of time.

I solved..perhaps will sent at direct message?

Reason why the transmiter is a lot of fisher men use 3 lines for example, when fishing for carp.
Microchip shipping costs are about $60, any size of order, even samples are charged now. but again if
use farnell.com, or rs.com once you spend (£20 or the same in local currencey it is free)

made me open minded.Added some option with PIC10F202 added 1 more option and also sent different tone when switch EAT trigger.

Thank you
Jeckson

[Ichan]

I did the simulation but not the real hardware, you better try it on real then report what you get  .

The circuit held it's on state by using output pulse stream of 555, if instability experienced then adding one more transistor will solve it.

Like others said, small micros will be "better". If you really in Makassar - South Sulawesi as I though then I will send you 2 PIC12F675 SOIC8 for free, just PM me your address.

-ichan

[Jeckson]

Like others said, small micros will be "better". If you really in Makassar - South Sulawesi as I though then I will send you 2 PIC12F675 SOIC8 for free, just PM me your address.

Thank's for offer but......... How's I paid your kindness 

The problem solved with NE555,NE567,etc.. let's said version 1.The project not belongs to me anymore.

Thank's
Jeckson