hi,
i have planned to do a project on "automatic speed reduction in car when heart rate decreases or increases from normal rate".
i got an circuit idea to construct a heart rate moniter using 555timer ....and ma dought is how to connect tis moniter to car brake and acceleration system and it must function when the heart rate increases or decreses frm normal. shal u please tel me any idea

 

considering that a normal heart rate is individual to the person, and changes over time, as well is influenced by everything they drank or ate that day, doesn't seem to be a practical solution. Monitoring a passenger's heart rate however might glean fruitful results.

 

That topic is one we cannot discuss -

6. Restricted topics. The following topics are regularly raised however are considered "off-topic" at all times and will results in Your thread being closed without question:

• Any kind of over-unity devices and systems
• Automotive modifications
• Devices designed to electrocute or shock another person
• LEDs to mains
• Phone jammers
• Rail guns and high-energy projectile devices
• Transformer-less power supplies