555 timer for iris scan biometrics?...

P

piglet

Guest
Been a long time since I last looked at a 555 datasheet but it seems
they are more capable than I ever imagined. Now that many processors are
on 52 week lead times we can squeeze more from of ol\' faithfulls?

<https://www.ti.com/lit/ds/symlink/se555m.pdf>

2 Applications
• Fingerprint Biometrics
• Iris Biometrics
• RFID Reader

Do not scrimp by using the vanilla LM555 which lacks the magic
functionality :)

<https://www.ti.com/lit/ds/symlink/lm555.pdf>


piglet
 
piglet wrote:
Been a long time since I last looked at a 555 datasheet but it seems
they are more capable than I ever imagined. Now that many processors are
on 52 week lead times we can squeeze more from of ol\' faithfulls?

https://www.ti.com/lit/ds/symlink/se555m.pdf

2 Applications
• Fingerprint Biometrics
• Iris Biometrics
• RFID Reader

Do not scrimp by using the vanilla LM555 which lacks the magic
functionality :)

https://www.ti.com/lit/ds/symlink/lm555.pdf
Click to expand...

Although it\'s not a biometric device, earlier this year, a 555 power
bank keepalive was designed and built by me:

<https://crcomp.net/mp3mod/index.php>

The gadget is used every single day and it works perfectly. The power
bank lasts about a month between charges. The gadget\'s used exclusively
to listen to audio books on dog walks and spins:

<https://crcomp.net/arts/spintale/index.php>

Danke,

--
Don, KB7RPU, https://www.qsl.net/kb7rpu
There was a young lady named Bright Whose speed was far faster than light;
She set out one day In a relative way And returned on the previous night.
 
On a sunny day (Wed, 31 Aug 2022 21:26:12 +0100) it happened piglet
<erichpwagner@hotmail.com> wrote in <teog55$1t9ok$1@dont-email.me>:

Been a long time since I last looked at a 555 datasheet but it seems
they are more capable than I ever imagined. Now that many processors are
on 52 week lead times we can squeeze more from of ol\' faithfulls?

https://www.ti.com/lit/ds/symlink/se555m.pdf

2 Applications
• Fingerprint Biometrics
• Iris Biometrics
• RFID Reader

Do not scrimp by using the vanilla LM555 which lacks the magic
functionality :)

https://www.ti.com/lit/ds/symlink/lm555.pdf


piglet
Click to expand...

Sure, I designed an ultrasonic distance meter with one in the eighties
to measure water height in wells.
555 and some CMOS counters.
 
On 01/09/2022 6:39 am, Jan Panteltje wrote:
On a sunny day (Wed, 31 Aug 2022 21:26:12 +0100) it happened piglet
erichpwagner@hotmail.com> wrote in <teog55$1t9ok$1@dont-email.me>:


Been a long time since I last looked at a 555 datasheet but it seems
they are more capable than I ever imagined. Now that many processors are
on 52 week lead times we can squeeze more from of ol\' faithfulls?

https://www.ti.com/lit/ds/symlink/se555m.pdf

2 Applications
• Fingerprint Biometrics
• Iris Biometrics
• RFID Reader

Do not scrimp by using the vanilla LM555 which lacks the magic
functionality :)

https://www.ti.com/lit/ds/symlink/lm555.pdf


piglet

Sure, I designed an ultrasonic distance meter with one in the eighties
to measure water height in wells.
555 and some CMOS counters.
Click to expand...

Yes, wonderfully versatile chip can do all sorts of weird and wonderful
things.

So how many would you need for TI\'s April 1st application suggestion of
iris biometrics?

piglet
 
On a sunny day (Thu, 1 Sep 2022 10:18:26 +0100) it happened piglet
<erichpwagner@hotmail.com> wrote in <teptd3$24qbf$1@dont-email.me>:

On 01/09/2022 6:39 am, Jan Panteltje wrote:
On a sunny day (Wed, 31 Aug 2022 21:26:12 +0100) it happened piglet
erichpwagner@hotmail.com> wrote in <teog55$1t9ok$1@dont-email.me>:


Been a long time since I last looked at a 555 datasheet but it seems
they are more capable than I ever imagined. Now that many processors are
on 52 week lead times we can squeeze more from of ol\' faithfulls?

https://www.ti.com/lit/ds/symlink/se555m.pdf

2 Applications
• Fingerprint Biometrics
• Iris Biometrics
• RFID Reader

Do not scrimp by using the vanilla LM555 which lacks the magic
functionality :)

https://www.ti.com/lit/ds/symlink/lm555.pdf


piglet

Sure, I designed an ultrasonic distance meter with one in the eighties
to measure water height in wells.
555 and some CMOS counters.

Yes, wonderfully versatile chip can do all sorts of weird and wonderful
things.

So how many would you need for TI\'s April 1st application suggestion of
iris biometrics?
Click to expand...

Well depends how many 555\'s you\'d have to sell to get enough money for an iris biometric module?
Think out of the box :)
 
On 01/09/2022 10:30 am, Jan Panteltje wrote:
On a sunny day (Thu, 1 Sep 2022 10:18:26 +0100) it happened piglet
erichpwagner@hotmail.com> wrote in <teptd3$24qbf$1@dont-email.me>:

On 01/09/2022 6:39 am, Jan Panteltje wrote:
On a sunny day (Wed, 31 Aug 2022 21:26:12 +0100) it happened piglet
erichpwagner@hotmail.com> wrote in <teog55$1t9ok$1@dont-email.me>:


Been a long time since I last looked at a 555 datasheet but it seems
they are more capable than I ever imagined. Now that many processors are
on 52 week lead times we can squeeze more from of ol\' faithfulls?

https://www.ti.com/lit/ds/symlink/se555m.pdf

2 Applications
• Fingerprint Biometrics
• Iris Biometrics
• RFID Reader

Do not scrimp by using the vanilla LM555 which lacks the magic
functionality :)

https://www.ti.com/lit/ds/symlink/lm555.pdf


piglet

Sure, I designed an ultrasonic distance meter with one in the eighties
to measure water height in wells.
555 and some CMOS counters.

Yes, wonderfully versatile chip can do all sorts of weird and wonderful
things.

So how many would you need for TI\'s April 1st application suggestion of
iris biometrics?

Well depends how many 555\'s you\'d have to sell to get enough money for an iris biometric module?
Think out of the box :)
Click to expand...

haha! Brilliant.

piglet
 
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