Need help understanding what this circuit does (urgent)
(*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator Jan 21, 2010 25,510 Joined Jan 21, 2010 Messages 25,510 Oct 19, 2016 #2 There is no way to tell. I suspect that pressing of the keys is associated with solenoid activation and possibly changes in the LED display.
There is no way to tell. I suspect that pressing of the keys is associated with solenoid activation and possibly changes in the LED display.
J James.Slats Oct 19, 2016 2 Joined Oct 19, 2016 Messages 2 Oct 19, 2016 #3 James.Slats said: View attachment 29786 Click to expand... As far as i know it is a security alarm circuit diagram it is off the picaxe website - CHI008. I just need help understanding what the circuit does
James.Slats said: View attachment 29786 Click to expand... As far as i know it is a security alarm circuit diagram it is off the picaxe website - CHI008. I just need help understanding what the circuit does
R R0und_R0bin Oct 14, 2016 7 Joined Oct 14, 2016 Messages 7 Oct 19, 2016 #4 This makes me think of an electromagnetic door lock with keypad activation. But it is more a synoptical schematic than a true electronic one
This makes me think of an electromagnetic door lock with keypad activation. But it is more a synoptical schematic than a true electronic one
ramussons Jun 10, 2014 467 Joined Jun 10, 2014 Messages 467 Oct 19, 2016 #5 The Relay operates when a particular sequence of the Keyboard is operated; though I see that the IC will never get V+ to operate.
The Relay operates when a particular sequence of the Keyboard is operated; though I see that the IC will never get V+ to operate.
P Pieter Kralt Oct 19, 2016 9 Joined Oct 19, 2016 Messages 9 Oct 19, 2016 #6 As drawn it will do about nothing. Where did you get this schematic? What's the type of the IC?
AnalogKid Jun 10, 2015 2,913 Joined Jun 10, 2015 Messages 2,913 Oct 19, 2016 #7 Both the circuit and its software program are explained in detail in the picaxe PDF document you did *not* link to in your post. The schematic has several errors, but the operational descriptions are correct. http://www.picaxe.com/docs/chi008.pdf http://www.picaxestore.com/index.php/en_gb/picaxe/project-kits/project-kits/chi008.html ak
Both the circuit and its software program are explained in detail in the picaxe PDF document you did *not* link to in your post. The schematic has several errors, but the operational descriptions are correct. http://www.picaxe.com/docs/chi008.pdf http://www.picaxestore.com/index.php/en_gb/picaxe/project-kits/project-kits/chi008.html ak
davenn Moderator Sep 5, 2009 14,271 Joined Sep 5, 2009 Messages 14,271 Oct 19, 2016 #8 thread closed to the OP .... do your homework, and next time post all the info Dave