About gate+alarm:

This is simple to build and cheap motorcycle alarm circuit which could be fitted in motorcycles to take care of them from getting stolen. The tiny circuit may be hidden anyplace, without having any difficult wiring. Practically, it fits all motorcycles as long as they’ve a electric battery. It is not going to drain out the battery though because the standby current is zero.

The hidden switch S1 could be a small push-to-on switch, or perhaps a reed switch with magnet, or any other identical simple arrangement. The circuit is made around a few lowvoltage MOSFETs configured as monostable timers. Motorcycle key S2 is an ignition switch, whilst switch S3 is a tilt switch.

This is definitely an ultra-sensitive fire sensor that exploits the direct piezoelectric property of an ordinary piezo component to recognize the fire. The lead zirconate titanate crystals within the piezo component have the property to deform and produce an electrical potential when heated, thus converting the piezo component into a heat sensor. The circuit mentioned right here is really sensitive. It provides a warning alarm in the event the area temperature raises over 10°C. The whole circuit has two modules: the sensor module and also the power supply module.

This is the shutter guard circuit which has sensitive vibration sensor, piezo-sensor. This circuit is specifically designed for outlets to defend towards theft. It can recognize any mechanical or acoustic vibration in its area when somebody attempts to break the shutter and instantly turn on a lamp and sound an alert alarm. A 15-minute time delay right after switch-on makes it possible for adequate time for the outlet or shop owner to close the shutter.

The front end of the circuit carries a timer designed around the well-known binary counter IC CD4060 (IC1) to produce 15-minute time delay for the remaining circuitry to switch on. Resistors R3 and R4 and capacitor C2 will make Q9 output high right after 15 minutes. Diode D1 inhibits the clock input (pin 11) to maintain the output high till the electrical power is switched off. Blinking LED1 signifies the oscillation of IC1.

Turn on and turn off your electrical devices using touch switch, so you can “play” your electronic devices more fun.. . Touch switch don’t need mechanical part, so they will not worn out due to mechanical contact. Touch switches can be used in places where regular switches would not last, such as wet or very dusty areas. You just need to add some relay to switch your devices which require high voltage supply.

Here the schematic diagram:

Component part list:

Part      Total Qty.    Description

C1         1          10uF 16V     Electrolytic Capacitor
R1, R2     2          100K 1/4 Watt Resistor
R3         1          10 Meg 1/4 Watt Resistor
U1         1          4011 CMOS NAND Gate IC
MISC       1          Board, Wire, Socket For U1