Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
The black blob on the circuit board is a "COB" (chip-on-board) integrated circuit.
Modules like that are custom made for high sales volume, low cost items, eg. a similar construction is used for musical christmas cards etc.
There is no way of knowing what is in it.
You can get various LED flasher modules that could be adapted, or it's quite easy to build one with such as a 555 timer IC.
Examples:
The led flasher circuit used as an LED blinker, indicator light or signal flash...NE555 timer IC alternating LED flasher...Police flashing strobe light...
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