2 layers84.5 × 108.3 mm
Phasor II
JordanAceto/Phasor_II
6-stage optical phase shifter pedal ala the Mu-tron II with extra features
196 parts6CC-BY-4.0
2 layers140 × 125 mm
Minimood
heolfief/minimood2[WIP] STM32F4 based audio synthesizer
- Size
- 140 × 125 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 142
- Nets
- 101
- Pads
- 451
- Tracks, vias
- 1,110, 201
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 31 Jan 2020
- Updated
- 8 Oct 2020
Overview
Minimood is an open-source printed circuit board by heolfief, from the heolfief/minimood repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 140 × 125 mm with 142 parts on 101 nets, routed with 1,110 tracks and 201 vias.
It is built around the RC4558D, 1N4148W and BC847B. Its parts include 47 capacitors, 25 resistors, 22 connectors, 6 ICs and 3 diodes. It belongs with the audio and music boards and the STM32 boards of this library.
Main components
3
RC4558D
SOIC-8-15V~-5V、5V~15V 0℃~+70℃ 1.7V/us 2 2.5mA 200nA 3MHz 500nA 6mV 8nV/√Hz@1kHz 90dB Built-in compensation SOIC-8 Operational Amplifier ROHSTexas InstrumentsOperational Amplifier
1N4148W
SOD-123150mA 1A 1V@50mA 1uA@75V 400mW 4ns 75V Independent SOD-123 Switching Diodes ROHSSTMicroelectronicsSwitching Diodes
BC847B
SOT-23-65℃~+150℃ 1 NPN 100MHz 100mA 200 200mV 250mW 45V 5uA 6V NPN SOT-23 Bipolar (BJT) ROHSNexperiaBipolar (BJT)
README
README.mdMiniMood
[WORK IN PROGRESS]
MiniMood is a digital and analog mono synth. This is a 4th year degree school project at INSA Rennes, France leaded by a team of 4 students.
Specs
- USB powered
- USB MIDI and DIN (old school) MIDI
- USB MIDI can be device or host (direct plugging of a midi controller)
- 3 voices polyphony
- ADSR filter
- 3 oscillators (sine, square, triangle, saw and arbitrary)
- waveform editor for arb oscillators
- Detune control
- 1 LFO (sine, square, triangle, saw and arbitrary)
- Analog low pass VCF, control by potentiometer or LFO
- Analog distortion, same as Ibanez's Tube Screamer
- Jack headphones sound output
- Control by buttons, potentiometer and 2 OLED screens
- 12 bits, 44100Hz sound output
- Based on STM32F446RE ARM microcontroller
Software framework
This project firmware have been designed with the use of the STM32CubeIDE on a Windows environment. To build source, open the .project file located in the Software/Firmware folder as a STM32CubeIDE project.
LICENSING
Licence for this project is available in the LICENSE file.
Notice of Non-Affiliation and Disclaimer :
The name "MiniMood" is a tribute to the great and famous Minimoog synth. This is a school project and is not meant to be sold.
This project is not affiliated, associated, authorized, endorsed by, or in any way officially connected with Moog Music Inc., or any of its subsidiaries or its affiliates. The official Moog Music Inc website can be found at https://www.moogmusic.com/.
The names Moog and Minimoog as well as related names, marks, emblems and images are registered trademarks of their respective owners.
Parts
142| Qty | Value | Footprint | References |
|---|---|---|---|
| 27 | 100n | Capacitor_SMD:C_0805_2012Metric | C11, C13, C14, C20, C22, C23, C24, C25, C26, C27, C28, C29, C30, C31, C32, C33 +11 |
| 14 | 10k | Potentiometer_THT:Potentiometer_Alps_RK09K_Single_Vertical | RV_ADSR_A1, RV_ADSR_D1, RV_ADSR_R1, RV_ADSR_S1, RV_HPF_CUT1, RV_HPF_RES1, RV_LFO_DEPTH1, RV_LFO_RATE1, RV_OSC1_AMP1, RV_OSC1_DET1, RV_OSC2_AMP1, RV_OSC2_DET1, RV_OSC3_AMP1, RV_OSC3_DET1 |
| 11 | SW_Push | Button_Switch_THT:SW_PUSH_6mm_H13mm | SW_CTRL_DOWN1, SW_CTRL_LEFT1, SW_CTRL_OK1, SW_CTRL_RIGHT1, SW_CTRL_UP1, SW_OSC1_ON1, SW_OSC1_WAVE1, SW_OSC2_ON1, SW_OSC2_WAVE1, SW_OSC3_ON1, SW_OSC3_WAVE1 |
| 9 | 10k | Resistor_SMD:R_0805_2012Metric | R1, R2, R9, R11, R12, R13, R17, R21, R34 |
| 5 | 100k | Resistor_SMD:R_0805_2012Metric | R3, R5, R6, R23, R24 |
| 4 | GND | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm | J7, J8, J21, J22 |
| 3 | 10n | Capacitor_SMD:C_0805_2012Metric | C2, C3, C8 |
| 2 | 100u | Capacitor_SMD:CP_Elec_6.3x5.4 | C37, C38 |
| 2 | 1N4148W | Diode_SMD:D_SOD-123 | D2, D3 |
| 2 | 1k | Resistor_SMD:R_0805_2012Metric | R15, R18 |
| 2 | 1u | Capacitor_SMD:C_0805_2012Metric | C16, C36 |
| 2 | 2.2u | Capacitor_SMD:C_0805_2012Metric | C21, C34 |
| 2 | 20p | Capacitor_SMD:C_0805_2012Metric | C42, C43 |
| 2 | 220 | Resistor_SMD:R_0805_2012Metric | R8, R16 |
| 2 | 220n | Capacitor_SMD:C_0805_2012Metric | C18, C19 |
| 2 | 4.7u | Capacitor_SMD:CP_Elec_4x5.4 | C10, C12 |
| 2 | 4.7u | Capacitor_SMD:C_0805_2012Metric | C1, C4 |
| 2 | 8.2k | Resistor_SMD:R_0805_2012Metric | R19, R22 |
| 2 | BLM21PG221SH1D - Ferrite_Bead | Inductor_SMD:L_0805_2012Metric | FB1, FB2 |
| 2 | SSD1306 | lib:128x64OLED | Brd1, Brd2 |
| 1 | +3.3V | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm | J23 |
| 1 | +5V | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm | J14 |
| 1 | +5VA | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm | J24 |
| 1 | 10k-dual-reverse-log | Potentiometer_THT:Potentiometer_Alps_RK09L_Double_Horizontal | RV1 |
| 1 | 1M | Resistor_SMD:R_0805_2012Metric | R4 |
| 1 | 1N4148 | Diode_SMD:D_SOD-123 | D1 |
| 1 | 22k | Potentiometer_THT:Potentiometer_Alps_RK09K_Single_Vertical | RV_DIST_TONE1 |
| 1 | 3.9k | Resistor_SMD:R_0805_2012Metric | R20 |
| 1 | 4.7k | Resistor_SMD:R_0805_2012Metric | R10 |
| 1 | 4.7uF (ESR<1ohm) | Capacitor_SMD:C_0805_2012Metric | C41 |
| 1 | 470k | Resistor_SMD:R_0805_2012Metric | R7 |
| 1 | 47p | Capacitor_SMD:C_0805_2012Metric | C15 |
| 1 | 500 | Resistor_SMD:R_0805_2012Metric | R14 |
| 1 | 500k log | Potentiometer_THT:Potentiometer_Alps_RK09K_Single_Vertical | RV_DIST_DRIVE1 |
| 1 | 51p | Capacitor_SMD:C_0805_2012Metric | C17 |
| 1 | 6N137 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U3 |
| 1 | AudioJack3 | lib:audio_jack_3.5mm_KYCON_STX-3000 | J6 |
| 1 | Audio_MCU | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm | J19 |
| 1 | Audio_jack_L | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm | J13 |
| 1 | Audio_jack_R | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm | J12 |
| 1 | BC847B | Package_TO_SOT_SMD:SOT-23 | Q5 |
| 1 | Crystal | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm_HandSoldering | Y1 |
| 1 | DIN-5_180degree | lib:MIDI_DIN5 | J3 |
| 1 | I2C_SCL | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm | J5 |
| 1 | I2C_SDA | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm | J10 |
| 1 | LD1117S33TR_SOT223 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | LFO_MCU | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm | J20 |
| 1 | LM4808M_NOPB | lib:LM4808M&slash_NOPB | U5 |
| 1 | LOGO | lib:logo_INSA | G*** |
| 1 | MCP6002-xSN | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | Post_FX | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm | J17 |
| 1 | Post_VCF | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm | J15 |
| 1 | Post_buffer | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm | J16 |
| 1 | RC4558 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U4 |
| 1 | STM32F446RETx | Package_QFP:LQFP-64_10x10mm_P0.5mm | U6 |
| 1 | SWD | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J1 |
| 1 | UART_RX_MIDI | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm | J11 |
| 1 | USB_A | Connector_USB:USB_A_Stewart_SS-52100-001_Horizontal | J2 |
| 1 | USB_B | Connector_USB:USB_B_OST_USB-B1HSxx_Horizontal | J4 |
The 138 most common of 142 parts.
Questions
How big is the Minimood PCB?
It measures 140 × 125 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Minimood use?
142 parts, built around the RC4558D, 1N4148W and BC847B. 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 Minimood KiCad files?
From the heolfief/minimood repository on GitHub, at the commit this page was made from: the board is Hardware/PCB/main_board/main_board.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Minimood design in my own project?
Its repository publishes it under the GPL-3.0 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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