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2N3904 | Small Signal NPN Transistor, TO-92 KK254 Molex header | | J2 | 1 nF | Unpolarized capacitor | | | | R25 | 1 | B20k | Potentiometer | | Tayda | A-1531 or A-557 | | ----- | --- | ---- | ----------- | ---- | ---- | | | Tayda | A-826 | | | | S3 | 1 | Conn_01x02 | SIP socket, 2.54 mm, 1x7 Pin socket, 2.54 mm, 1x4 Light emitting diode, 5 mm at first and soldered later. Retriggering.

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