Hii Dear Maker welcome “DiY Projects Lab ” Today i’ll show you In this Article How to build an Siren Generator | UM3561 | Fire Engine, Police, Ambulance
UM3561 is an IC siren generator generally used in alarm and toy applications. Depending on the different Pin selection.
- Typical Operating Voltage = 3V
- 8-Pin DIP Package
- Power On Reset
You can generate 4 different types of sirens which are – ambulance siren, fire siren, police siren and Machine gun. Here we will see how we can make these different siren sounds using different selections on the IC pin. So here are the different types of siren circuits that can be created using IC UM3561
– ambulance siren, machine gun sound, siren circuit and fire police.
UM3561 Pin Diagram
Pin 1 (SEL2) and pin 7 (SEL1) are the selection pins. We can only use these two pins to select the siren sounds.
speaker is drive with an external NPN transistor. SPDT switch is used to turn the circuit ON & OFF.
1) IC UM 3561
2) BC 547 / TIP 32C
4) Variable Resistor 47 K
5) Resistor 100K x 2
6) Push Switch
In this Article i’m going to show you how to make 4 in 1 Siren Generator circuit using IC UM3561, it is a Melody generator IC –
1) Car reverse siren,
2) police siren,
3) fire brigade siren
4) Ambulance Siren
5) Machine Gun siren,
6) Car indicator siren,
7) Siren for Science project,
8) Warning Siren
Police Siren Circuit Create a police siren circuit you need to create the connections as shown in the following circuit.
For create the ambulance siren with um3561 , just connect pin 6 (SEL 1) with ground(-) to remove pin from battery positive(-) pin
Machine Gun Circuit can be used in games to make them more interesting. To create the sound weapon with IC UM3561, leave pin 6 unplugged and connect pin 1 to the positive end of the mix
3 In One Siren 🚨 Generator
- 1x UM3561
- 1x BC547 NPN Transistor
- 1x 220KΩ Resistor
- 2x 220Ω Resistor
- 1x SPDT Slider Switch
- 1x SP3T Slider Switch
- 2x 2-Pin Male Header Pins
- 1x Speaker
- 1x AA Battery Holder (2 Slot)
- 2x AA Battery
NextPCB PCB Manufacturers Company
1st Thanks NextPCB for sponsor this project. Nextpcb offer For New Customer, Your First Order Will Be 10 PCBs for just $0 at Free.
NextPCB one of the world’s most professional PCB manufacturers based in China. With professional PCB manufacturing capabilities, for each file of our customer will be double-checked by more than 14 years PCB engineers. they handle the whole process of PCBs including the PCB assembly ,PCB manufacturing, testing and final shipment.
I fabricated this board using the Iron Method.
I drilled four mounting holes in each corner with a diameter of 3mm.
The PCB size is 3.3cm X 3.3cm .
Place and solder all the components into the PCB.
Author Of this Project :- Jonathan Pereira (Electro Guruji)
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