GPL 3.0
Learn How to Make a DIY Electronic Siren Generator circuit that can produce police car siren, emergency ambulance siren & fire brigade sound using the IC UM3561a Siren Tone Generator.
The circuit only requires a few components and can be put together in a couple of hours. Since the siren is multipurpose, it can be easily configured to suit it's vehicle's siren requirements.
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| ID | Name | Designator | Footprint | Quantity | BOM_Manufacturer Part | BOM_Manufacturer | BOM_Supplier | BOM_Supplier Part |
|---|---|---|---|---|---|---|---|---|
| 1 | UM3561 | IC1 | SOCKET-08 | 1 | LM555CN | FAIRCHILD | LCSC | C110322 |
| 2 | 220K | R1 | 0204/5 | 1 | MFR50SJT-52-220R | YAGEO | LCSC | C176632 |
| 3 | 220E | R2,R3 | 0204/5 | 2 | MFR50SJT-52-220R | YAGEO | LCSC | C176632 |
| 4 | BC547 | T1 | TO92-EBC | 1 | BC547B Tube | CJ | LCSC | C2092 |
| 5 | 3V Supply | JP1 | 1X02 | 1 | 826629-2 | TE Connectivity | LCSC | C86471 |
| 6 | Speaker | JP2 | 1X02 | 1 | 826629-2 | TE Connectivity | LCSC | C86471 |
| 7 | LED5MM | LED1 | LED5MM | 1 | 48BB4HC | KENTO | LCSC | C63189 |
| 8 | TL36YO | S2 | TL3XYO | 1 | SK12D07VG3 | ReliaPro | LCSC | C38264 |
| 9 | SP3T | JP3 | 1X05 | 1 | K3-1391A | HRO | LCSC | C92655 |
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