2 layers105 × 128.5 mm
2 layers170 × 128.5 mm
MiniSeq
benjiaomodular/MiniSeq1A basic Baby-8 Sequencer
- Size
- 170 × 128.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 99
- Nets
- 73
- Pads
- 282
- Tracks, vias
- 231, 494
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 19 Aug 2023
- Updated
- 16 Dec 2024
Overview
MiniSeq is an open-source printed circuit board by benjiaomodular, from the benjiaomodular/MiniSeq repository on GitHub, published under the MIT licence. It is a 2-layer board of 170 × 128.5 mm with 99 parts on 73 nets, routed with 231 tracks and 494 vias.
It is built around the TL072, L7809CD2T-TR and BC547. Its parts include 26 diodes, 17 resistors, 8 capacitors, 8 transistors and 8 switches.
Main components
3
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
L7809CD2T-TR
TO-263-20℃~+125℃@(Tj) 1 1.5A 25V 2V@(1A) 52uV 56dB@(120Hz) 8mA 9V Fixed Over Current Protection、Over Temperature Protection、Short Circuit Protection Positive TO-263-2 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSSTMicroelectronicsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
BC547
TO-92Bipolar (BJT)Jiangsu Changjing Electronics Technology (CJ)
README
README.mdMiniSeq
Full docs on my website: https://benjiaomodular.com/post/miniseq/
This is my second time building a Baby-8 step CV sequencer since my plexiglass Baby-8 build from two years ago. This, time I added a gate output, a reset input, and a step length control.
Schematics
License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Parts
99| Qty | Value | Footprint | References |
|---|---|---|---|
| 19 | 1N4148 | Diode_SMD:D_SOD-123 | D10, D11, D12, D17, D18, D19, D20, D21, D22, D23, D24, D25, D26, D27, D28, D29 +3 |
| 9 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R3, R5, R6, R7, R8, R9, R12, R15 |
| 8 | BC547 | Package_TO_SOT_THT:TO-92_Inline_Wide | Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q9 |
| 7 | 100k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R10, R11, R11, R13, R13, R14, R16 |
| 7 | LED | LED_THT:LED_D3.0mm | D2, D3, D13, D14, D15, D16, D32 |
| 6 | B100k | benjiaomodular:Potentiometer_RV09 | RV3, RV4, RV5, RV6, RV7, RV8 |
| 6 | PJ3001F | benjiaomodular:AudioJack_3.5mm | CLOCK_IN1, CV_OUT1, CV_OUT1, GATE_OUT1, GATE_OUT1, RESET_IN1 |
| 6 | SMTS-102 | benjiaomodular:ToggleSwitch_SMTS-102 | SW3, SW4, SW5, SW6, SW7, SW8 |
| 5 | 100nF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C2, C3, C6, C7 |
| 2 | 22uF | Capacitor_SMD:CP_Elec_4x3.9 | C4, C5 |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C8 |
| 1 | 33k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R17 |
| 1 | 4017 | Package_SO:SOIC-16W_5.3x10.2mm_P1.27mm | U1 |
| 1 | CLOCK_BTN | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW10 |
| 1 | Conn_01x10_Pin | Connector_IDC:IDC-Header_2x05_P2.54mm_Vertical | J1 |
| 1 | L7809CD2T-TR | Package_TO_SOT_SMD:TO-263-2 | U4 |
| 1 | LOGO | LOGO | G*** |
| 1 | RESET_BTN | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW9 |
| 1 | TL072 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | TL074 | Package_SO:SOIC-14_3.9x8.7mm_P1.27mm | U3 |
| 1 | ~ | benjiaomodular:RotarySwitch_SR16_POLE1_WAY8 | STEPS_SW1 |
The 86 most common of 99 parts.
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Questions
How big is the MiniSeq PCB?
It measures 170 × 128.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the MiniSeq use?
99 parts, built around the TL072, L7809CD2T-TR and BC547. 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 MiniSeq KiCad files?
From the benjiaomodular/MiniSeq repository on GitHub, at the commit this page was made from: the board is hardware/circuit/MiniSeq/MiniSeq.kicad_pcb and its schematic hardware/circuit/MiniSeq/MiniSeq.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the MiniSeq design in my own project?
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).