2 layers99.1 × 99.1 mm
2 layers99.1 × 68.6 mm
Modulation source
JordanAceto/angelo_modular2modular analog synthesizer for a.p.
- Size
- 99.1 × 68.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 73
- Nets
- 52
- Pads
- 213
- Tracks, vias
- 383, 47
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 17 Jun 2020
- Updated
- 13 Aug 2020
Overview
Modulation source is an open-source printed circuit board by JordanAceto, from the JordanAceto/angelo_modular repository on GitHub, published under the CC-BY-4.0 licence. It is a 2-layer board of 99.1 × 68.6 mm with 73 parts on 52 nets, routed with 383 tracks and 47 vias.
It is built around the TL072, LM13700M and BC550, with the BC560 and BF245A among its other parts. Its parts include 34 resistors, 16 capacitors, 6 transistors, 4 ICs and 3 diodes.
Main components
5
TL072
SOP-8-18V~18V 0℃~+70℃ 1.4mA 1.5nA 10V/us 10mV 2 2.5nA 3MHz 85dB SOP-8 Operational Amplifier ROHSGcoreOperational Amplifier
LM13700M
SOIC-16-16V~-4.75V、4.75V~16V 0℃~+70℃ 110dB 2 2.6mA 20mA 400nA 4mV 50V/us 600nA 9.5V~32V SOIC-16 Operational Amplifier ROHSTexas InstrumentsOperational Amplifier
BC550
TO-92-31 NPN 100mA 110 15nA 300MHz 45V 500mW 600mV 6V NPN Standalone TO-92-3 Bipolar (BJT) ROHSonsemiBipolar (BJT)BC560
General-purpose PNP bipolar junction transistor in TO-92 package with 1.27mm pitch, manufactured by several semiconductor companies.onsemiUncategorisedBF245A
TO-92-3-55℃~+150℃ 1 N-channel 3.8V 30V 350mW 6.5mA N-Channel TO-92-3 MOSFETs ROHSonsemiMOSFETs
README
README.mdCustom 5u format modular synth with 12 modules
Contains:
- VCO with 5-pulser waveshaper
- VCO with two sub-oscillators
- VCO with LFO range switch
- Voltage controlled wavefolder plus ring-modulator
- Voltage controlled filter with swapable filter-core plug-in boards
- Dual late MS20 style voltage controlled filter
- MIDI to CV plus audio input processor
- Dual 3-input DC coupled mixer
- Modulation source with voltage controlled LFO, sample-and-hold, and white noise source
- Dual Serge style slope generator
- Dual ADSR
- Dual VCA
- +/- 12 volt power supply
User manuals can be found in the /user_manuals/ directory. This directory also contains a document outlining any pcb kludges or changes to the current system.
Documentation for the pcbs is in the /pcb_docs/ directory
Documentation for each pcb consists of the following:
-
A very brief README outlining the basics of the pcb
-
/construction_docs/subdirectory which contains:- Gerbers for the circuit board
- An interactive BOM which can be opened in a web browser
- A pdf schematic
-
/kicad_docs/subdirectory which contains the files needed to edit the schematic and pcb layout with kicad -
/pics/subdirectory which contains a few rendered pictures of the pcb for reference
Parts
73| Qty | Value | Footprint | References |
|---|---|---|---|
| 9 | 100nF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C8, C9, C10, C11, C12, C13, C14, C15, C16 |
| 5 | 15k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R13, R14, R17, R28, R29 |
| 5 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R16, R18, R31, R32, R33 |
| 4 | 33k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R3, R7, R11, R12 |
| 3 | 100k | Potentiometer_THT:Potentiometer_Alpha_RD901F-40-00D_Single_Vertical | RV1, RV2, RV3 |
| 3 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R10, R21, R25 |
| 3 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3 |
| 3 | 2k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R6, R8, R9 |
| 3 | BC550 | Package_TO_SOT_THT:TO-92_Inline | Q4, Q5, Q6 |
| 3 | TL072 | Package_DIP:DIP-8_W7.62mm | U2, U3, U4 |
| 2 | 100k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1, R5 |
| 2 | 10nF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C1, C2 |
| 2 | 10uF | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C6, C7 |
| 2 | 2k2 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R20, R27 |
| 2 | 50k | Potentiometer_THT:Potentiometer_Bourns_3296W_Vertical | RV4, RV5 |
| 2 | BC560 | Package_TO_SOT_THT:TO-92_Inline | Q1, Q2 |
| 1 | 10M | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R30 |
| 1 | 150k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R24 |
| 1 | 18k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R23 |
| 1 | 1M | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R26 |
| 1 | 1MA | Potentiometer_THT:Potentiometer_Alpha_RD901F-40-00D_Single_Vertical | RV7 |
| 1 | 1k | Potentiometer_THT:Potentiometer_Bourns_3296W_Vertical | RV6 |
| 1 | 1uF | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C5 |
| 1 | 200k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R2 |
| 1 | 220k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R34 |
| 1 | 220nF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C3 |
| 1 | 270k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R4 |
| 1 | 27k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R19 |
| 1 | 390 | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R22 |
| 1 | 47uF | Capacitor_THT:CP_Radial_D6.3mm_P2.50mm | C4 |
| 1 | 51k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R15 |
| 1 | BF245A | Package_TO_SOT_THT:TO-92_Inline | Q3 |
| 1 | Conn_01x04 | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | inputs1 |
| 1 | Conn_01x06 | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | outputs1 |
| 1 | LM13700 | Package_DIP:DIP-16_W7.62mm | U1 |
| 1 | power_in | Connector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_Vertical | J1 |
Questions
How big is the Modulation source PCB?
It measures 99.1 × 68.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Modulation source use?
73 parts, built around the TL072, LM13700M, BC550 and BC560. 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.
Where can I download the Modulation source KiCad files?
From the JordanAceto/angelo_modular repository on GitHub, at the commit this page was made from: the board is pcb_docs/modulation_source/kicad_docs/modulation_source.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Modulation source design in my own project?
Its repository publishes it under the CC-BY-4.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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