
MiniLFO
benjiaomodular/MiniLFO
A super simple 2HP triangle wave LFO for Eurorack modular synth. This is roughly based on David Haillant's Simple LFO.

A super simple 2HP triangle wave LFO for Eurorack modular synth. This is roughly based on David Haillant's Simple LFO.
MiniLFO is an open-source printed circuit board by benjiaomodular, from the benjiaomodular/MiniLFO repository on GitHub, published under the MIT licence. It is a 2-layer board of 31.2 × 128.5 mm with 26 parts on 18 nets, routed with 109 tracks and 81 vias.
Its parts include 8 resistors, 6 capacitors, 1 IC, 1 diode and 1 connector.
A super simple 2HP triangle wave LFO for Eurorack modular synth. This is roughly based on David Haillant's Simple LFO.

More info on my website: https://benjiaomodular.com/posts/minilfo

| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 100k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R3, R4 |
| 2 | 100nF | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C4, C5 |
| 2 | 1k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R7, R8 |
| 2 | 22uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C6 |
| 2 | B100k | benjiaomodular:Potentiometer_RV09 | RANGE1, TIME1 |
| 1 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R6 |
| 1 | 10nF | benjiaomodular:Capacitor_Rect_L7.2mm_W2.5mm_P5.00mm | C2 |
| 1 | 10uF | benjiaomodular:Capacitor_Radial_D5.0mm_P2.5mm | C1 |
| 1 | 4.7k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R5 |
| 1 | 470 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1 |
| 1 | AudioJack2_SwitchT | benjiaomodular:AudioJack_3.5mm | TRI_OUT1 |
| 1 | IDC_2x05 | Connector_IDC:IDC-Header_2x05_P2.54mm_Vertical | J1 |
| 1 | LED_Dual_Bidirectional | LED_THT:LED_D3.0mm | D1 |
| 1 | SW_SPDT | benjiaomodular:ToggleSwitch_MTS-102_SPDT | SW1 |
| 1 | TL074 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U1 |
The 21 most common of 26 parts.

benjiaomodular/MiniLFO
A super simple 2HP triangle wave LFO for Eurorack modular synth. This is roughly based on David Haillant's Simple LFO.

benjiaomodular/MiniLFO
A super simple 2HP triangle wave LFO for Eurorack modular synth. This is roughly based on David Haillant's Simple LFO.


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It measures 31.2 × 128.5 mm and has 2 copper layers, 1.6 mm thick.
26 parts. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the benjiaomodular/MiniLFO repository on GitHub, at the commit this page was made from: the board is MiniLFO v1.0/MiniLFO.kicad_pcb and its schematic MiniLFO v1.0/Eurorack Power.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).