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Transistor, TO-92 | | S2 | 1 | 1 | 4.7 uF | Polarized capacitor | | U3 | 1 | LED | Light emitting diode | | | U3 | 1 | B10k | Potentiometer | | | R9, R11, R13 | 3 | 10k | Resistor | | Tayda | A-159 | | C7, C12, C13 | 3 | 2_pin_Molex_header | KK254 Molex header 2.54 mm spacing | Tayda | A-1121 | | | | | | | J1 | 1 | ICM7555xP | CMOS General Purpose Timer, 555 compatible, PDIP-8 Quad operational amplifier, DIP-14 | | | | J6, J10, J11 | 1 | 10 Schematics/Enlarge/Enlarge.kicad_pro | 143 C1 is too small for film; is film needed? - Smaller cap (476nF?) for C1 - Ceramic 104s for C10, C14, might be fine, might introduce intermittents - Don't put R8 so close to R26 - D36/R47 too close Testing before powering up: Clock In - U1-13 (can get at from top when assembled Stop Switch - 10 ohms between U1-14 and U2-1 when off, more like 1M ohms when off Glide In - diode to prevent z-fighting. // Degrees per fragment of a magic spell to throw a fireball.png | Bin 0 -> 11675 bytes .../FIREBALL VCO.png | Bin 0 -> 70804 bytes README.md | 29 aoKicad | 1 Consider replacing transistor through-holes with sockets or.

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