Tremolo

eddcad·Tremolo

About the Tremolo PCB

Tremolo is an open source PCB design by eddcad, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 138 × 100.9 mm, with 90 components from 42 distinct parts.

Other key parts include the TL072 and TL074. By type, the board carries 41 resistors, 22 capacitors, 6 transistors, 4 ICs, 4 LEDs and 3 diodes.

It belongs with the audio designs in this gallery.

From the project

Lovetone Wobbulator clone created in Kicad and modified to fit into a Hammond 1590XX

Clone of Lovetone's Wobbulator edited to fit in a Hammond 1590xx.

Main components on the Tremolo

TL072 TL074

Tremolo bill of materials (BOM)

90 components, 42 distinct parts.

Qty	Part	Footprint	Refs
3	TL072	DIP-8_W7.62mm	U1, U2, U3
1	TL074	DIP-14_W7.62mm	U4
5	BC549C	TO-92L_Inline_Wide	Q1, Q2, Q3, Q5, Q6
1	J113	TO-92L_Inline_Wide	Q4
1	LDEPTH B100k	Potentiometer_Omeg_PC16BU_Vertical	RV1
1	RDEPTH B100k	Potentiometer_Omeg_PC16BU_Vertical	RV2
1	LFORRate B100K	Potentiometer_Omeg_PC16BU_Vertical	RV3
1	LFOLRate B100K	Potentiometer_Omeg_PC16BU_Vertical	RV4
2	SW_3p4t	3p4tRotary	S1, S2
1	LeftTr	OEP1200	T1
1	RightTr	OEP1200	T2
2	D_LDR	R_LDR_5.2x5.2mm_P3.5mm_Horizontal	VLR1, VRR1
2	LED	LED_D5.0mm	DL3, DR2
2	D_Photo	LED_D5.0mm	VLD1, VRD1
1	1N4001	D_DO-41_SOD81_P10.16mm_Horizontal	D1
2	1N4148	D_DO-35_SOD27_P7.62mm_Horizontal	D4, D5
3	100n	C_Rect_L7.0mm_W2.5mm_P5.00mm	C1, C5, C16
1	220U	CP_Radial_D6.3mm_P2.50mm	C2
6	4u7	CP_Radial_D4.0mm_P2.00mm	C3, C4, C10, C11, C17, C18
3	10U	CP_Radial_D5.0mm_P2.00mm	C6, C13, C20

Show 22 more

Qty	Part	Footprint	Refs
1	470n	C_Rect_L7.0mm_W3.5mm_P5.00mm	C7
1	22n	C_Rect_L7.0mm_W2.5mm_P5.00mm	C8
1	33n	C_Rect_L7.0mm_W2.5mm_P5.00mm	C9
1	200u	CP_Radial_D6.3mm_P2.50mm	C12
2	47p	C_Disc_D3.0mm_W2.0mm_P2.50mm	C14, C15
1	2u2	CP_Radial_D5.0mm_P2.00mm	C19
1	1u	CP_Radial_D5.0mm_P2.00mm	C21
1	2n	C_Rect_L7.0mm_W2.5mm_P5.00mm	C22
2	270k	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R1, R2
1	1m2	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R3
7	4k7	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R4, R5, R8, R11, R12, R32, R35
5	22K	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R6, R7, R16, R22, R31
2	1k5	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R9, R10
2	1k	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R13, R14
4	100r	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R15, R19, R26, R28
4	39k	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R17, R18, R23, R24
2	25k	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R20, R21
5	100k	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R25, R27, R39, R40, R41
2	330r	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R29, R30
2	15k	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R33, R36
2	2k2	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R34, R38
1	10k	R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal	R37

Tremolo design files

The KiCad project lives in the eddcad/Tremolo repository on GitHub; these links point at the commit this page was built from.

LayoutTremolo.kicad_pcb

Tremolo: common questions

How big is the Tremolo PCB?

The Tremolo measures 138 × 100.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Tremolo?

90 components, from 42 distinct parts. The full bill of materials is listed on this page.

Where can I download the Tremolo design files?

From the eddcad/Tremolo repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Tremolo design in my own project?

Yes, under the terms of its GPL-3.0 license, which eddcad chose for the repository.

Tremolo

About the Tremolo PCB

Main components on the Tremolo

Tremolo bill of materials (BOM)

Tremolo design files

Tremolo: common questions

How big is the Tremolo PCB?

How many components are on the Tremolo?

Where can I download the Tremolo design files?

Can I use the Tremolo design in my own project?

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