Liv Synth
About the Liv Synth PCB
Liv Synth is an open source STM32 PCB design by SloBloLabs, published on GitHub under the MIT license. It is a 2-layer board measuring 230 × 159.9 mm, with 273 components from 76 distinct parts.
Its main chip is the STM32F405RGT6, from the STM32 family. Other key parts include the TL074, LM386, LM13700, LM1117-3.3 and PCA9685PW. By type, the board carries 126 resistors, 46 capacitors, 19 connectors, 16 transistors, 12 ICs and 11 diodes.
It belongs with the audio designs in this gallery.
From the project
Watch the related [Demo Video] on Youtube for a workout in musical context.
Watch the related [Demo Video] on Youtube for a workout in musical context.
Watch the corresponding [Video Manual] on Youtube for a detailed feature explanation.
[Demo Video]: https://youtu.be/7tzhh7atj4o [Video Manual]: https://youtu.be/lYTFUqn5oQk
How to convert a CubeMX / CubeIDE project to GNU ARM Toolchain with CMake, openocd and VS Code
Available on PATH - ARM toolchain - make - cmake - openocd
Main components on the Liv Synth
Liv Synth bill of materials (BOM)
273 components, 76 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 5 | TL074 | SOIC-14_3.9x8.7mm_P1.27mm | U1, U2, U4, U5, U6 |
| 1 | LM386 | DIP-8_W7.62mm_Socket | U3 |
| 1 | LM13700 | SOP-16_3.9x9.9mm_P1.27mm | U7 |
| 1 | LM1117-3.3 | SOT-223-3_TabPin2 | U8 |
| 1 | STM32F405RGT6 | LQFP-64_10x10mm_P0.5mm | U9 |
| 2 | PCA9685PW | TSSOP-28_4.4x9.7mm_P0.65mm | U10, U11 |
| 1 | 74HC165 | SOIC-16_3.9x9.9mm_P1.27mm | U14 |
| 14 | 2N3904 | TO-92_Inline | Q1, Q2, Q4, Q5, Q6, Q7, Q10, Q11 +6 |
| 2 | 2N3906 | TO-92_Inline | Q8, Q9 |
| 1 | ABM8-16.000MHZ-D1X-T | Crystal_SMD_3225-4Pin_3.2x2.5mm_HandSoldering | Y1 |
| 3 | PJ398SM | Thonkiconn_PJ398SM | J1, J2, J3 |
| 1 | Barrel_Jack_Switch | BarrelJack_CUI_PJ-102AH_Horizontal | J7 |
| 11 | Jumper | PinHeader_1x02_P2.54mm_Vertical | J8, J9, J10, J11, J13, J15, J16, J17 +3 |
| 1 | VGND | PinHeader_1x02_P2.54mm_Vertical | J12 |
| 1 | USB_B_Micro | USB_Micro-B_Wuerth_629105150521 | J21 |
| 1 | 3V3 | PinHeader_1x02_P2.54mm_Vertical | J24 |
| 1 | 9V | PinHeader_1x02_P2.54mm_Vertical | J25 |
| 1 | 9V | BatteryHolder_Eagle_12BH611-GR | BT1 |
| 1 | LSM-50M/NO-B 8R (<32R) 1W | LSM-50M NO-B | LS1 |
| 9 | TC002-N11AS2XT-RGB | TC002-N11AS2XT-RGB | RGB_Pot1, RGB_Pot2, RGB_Pot3, RGB_Pot4, RGB_Pot5, RGB_Pot6, RGB_Pot7, RGB_Pot8 +1 |
Show 56 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 1K | Potentiometer_Bourns_3296W_Vertical | RV1 |
| 4 | 100K | Potentiometer_Bourns_3296W_Vertical | RV2, RV15, RV16, RV17 |
| 8 | 100K | Alpha_RD901F | RV3, RV8, RV13, RV14, RV18, RV19, RV20, RV22 |
| 2 | 10K | RV141F-40-20BL | RV4, RV9 |
| 5 | 100K | RV141F-40-20BL | RV5, RV6, RV7, RV10, RV11 |
| 1 | 100 | Potentiometer_Bourns_3296W_Vertical | RV12 |
| 1 | 10K | Alpha_RD901F | RV21 |
| 3 | SW_SPDT | SW_Toggle_MS500 | SW1, SW3, SW4 |
| 1 | SW_SPST | SW_Toggle_MS500 | SW2 |
| 1 | SW_Push | E-Switch_TL1105SP | SW6 |
| 2 | SW_SPDT | SW_E-Switch_EG1224_SPDT_Angled | SW7, SW8 |
| 1 | 2K 3300ppm LT16S202F33 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | TH1 |
| 6 | LED | LED_D5.0mm | D1, D2, D5, D8, D9, D10 |
| 1 | LED_RKGB | LED_D5.0mm-4_RGB | D3 |
| 3 | 1N4148 | D_DO-35_SOD27_P7.62mm_Horizontal | D6, D7, D11 |
| 1 | SS310 | D_SMC_Handsoldering | D12 |
| 1 | 120R@100MHz | L_0603_1608Metric | FB1 |
| 7 | 1u | C_Rect_L7.2mm_W5.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C1, C2, C9, C19, C32, C33, C41 |
| 20 | 100n | C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C3, C4, C6, C7, C12, C16, C17, C18 +12 |
| 2 | 1n | C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C5, C20 |
| 2 | 1p | C_Disc_D3.0mm_W1.6mm_P2.50mm | C8, C11 |
| 1 | 33u | CP_Radial_D8.0mm_P3.50mm | C10 |
| 3 | 10n | C_Rect_L7.2mm_W2.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C13, C21, C36 |
| 3 | 270n | C_Rect_L7.2mm_W4.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C14, C23, C24 |
| 3 | 10u | CP_Radial_D8.0mm_P3.50mm | C15, C45, C49 |
| 1 | 4u7 | CP_Radial_D8.0mm_P3.50mm | C22 |
| 1 | 270n | C_Rect_L7.2mm_W5.5mm_P5.00mm_FKS2_FKP2_MKS2_MKP2 | C25 |
| 1 | 47p | C_Disc_D3.0mm_W1.6mm_P2.50mm | C28 |
| 1 | 470u | CP_Radial_D8.0mm_P3.50mm | C29 |
| 1 | 22u | CP_Radial_D8.0mm_P3.50mm | C52 |
| 31 | 100K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R2, R3, R4, R10, R11, R12, R13 +23 |
| 2 | 360 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R5, R6 |
| 2 | 20K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R7, R9 |
| 2 | 390 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R8, R65 |
| 18 | 220 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R14, R88, R91, R97, R99, R100, R101, R102 +10 |
| 8 | 1K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R15, R16, R25, R27, R35, R45, R46, R48 |
| 3 | 47K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R17, R18, R59 |
| 1 | 82K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R20 |
| 2 | 470K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R23, R43 |
| 6 | 2K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R24, R31, R33, R36, R42, R54 |
| 6 | 4k7 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R28, R52, R74, R77, R92, R93 |
| 17 | 10K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R29, R30, R34, R68, R69, R73, R89, R105 +9 |
| 1 | 6K2 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R41 |
| 2 | 68K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R44, R71 |
| 1 | 820K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R49 |
| 1 | 100R | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R50 |
| 1 | 8K2 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R53 |
| 1 | 2K2 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R55 |
| 1 | 24K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R57 |
| 1 | 150K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R58 |
| 1 | 10R | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R61 |
| 2 | 1M | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R62, R63 |
| 4 | 100 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R67, R70, R75, R76 |
| 1 | 330K | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R84 |
| 2 | 2K7 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R85, R86 |
| 9 | 470 | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R90, R116, R118, R120, R122, R124, R126, R128 +1 |
Liv Synth design files
The KiCad project lives in the SloBloLabs/LivSynth repository on GitHub; these links point at the commit this page was built from.
Liv Synth: common questions
What microcontroller does the Liv Synth use?
The Liv Synth is built around the STM32F405RGT6, from the STM32 family.
How big is the Liv Synth PCB?
The Liv Synth measures 230 × 159.9 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Liv Synth?
273 components, from 76 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Liv Synth design files?
From the SloBloLabs/LivSynth repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Liv Synth design in my own project?
Yes, under the terms of its MIT license, which SloBloLabs chose for the repository.
Can I test firmware for the Liv Synth without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
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