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by Davor Cihlar
Language: Hrvatski
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Hardware projects:
Audio amplifier
Automatic CD holder
BCD clock
BFsim
Cantenna
Communicator for calculator TI-83+
Dicy
DS1307 (clock)->PC
Flash memory programmer
Flyback
Frequency counter
Hearth pulsemeter
Init
High voltage capacitor
Ignition Coil
Jejer (croatian: Đejđer)
JSM (croatian: ĐSM)
longTC
microTC
miliTC
MMC Reader
PS2_2_DIN
Seizmograph
Teletext
Tesla Coil
Tesla Coil - fixing school's
Tesla Coil - on the old way
The Box
USB Rotary Dial
Vacuum tube SR bistable
Z80
Project count: 30
Software projects:
BFsim
Currently on Open Radio
Flash memory programmer
MandlDrot
Outcast Launcher
USB Rotary Dial
ZTetris
Project count: 7

Hearth pulsemeter

Tags: Hardware Digital PIC

Init

Time:
18.12.2005 11:17:54PM
Description:

Measure your pulse! (If you tune it well)

This device connects to the frequency counter with a modified software. With a modified software it could show blinking hearth in one corner of the LCD and it counted current hearth spead and average speed of eight hearth "ticks".

Schematics:
Pictures:
[DSC02182.JPG (35kiB)]
Project started...One schematic from the Internet didn't work, so I modified it a bit...
[DSC02183.JPG (24kiB)]
You put that on your finger.After longer time, when it's removed from finger, finger "explodes of luck"... :)
[DSC02194.JPG (19kiB)]
Top view.
[DSC02197.JPG (50kiB)]
Bottom view.It's obvious that I modified schematic... After I changed it, I didn't draw id, so I made wrong board.
[DSC02199.JPG (28kiB)]
Done...It is than connected with frequency counter with a changed software.
[DSC02218.JPG (107kiB)]
That's how it's done in 2AM...
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