2 layers281.1 × 236.5 mm
MiniDrumkit2
Fihdi/MiniDrumkit
Eurorack DrumKit module with a 3 channel wave-file player and analog Hi-Hat and Kick Drum sections
239 parts15MIT
2 layers30.5 × 110 mm
Kilter
catrax/kilter6Resonant multimode eurorack filter loosely based on René Schmitz' MS-20 schematic
- Size
- 30.5 × 110 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 132
- Nets
- 98
- Pads
- 393
- Tracks, vias
- 1,119, 186
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 22 Aug 2020
- Updated
- 26 Feb 2023
Overview
Kilter is an open-source printed circuit board by catrax, from the catrax/kilter repository on GitHub. It is a 2-layer board of 30.5 × 110 mm with 132 parts on 98 nets, routed with 1,119 tracks and 186 vias.
It is built around the TL072, LM13700M and BC857, with the BC858 among its other parts. Its parts include 64 resistors, 29 capacitors, 10 ICs, 10 connectors and 7 diodes.
Main components
4
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
BC857
SOT-231 PNP 100MHz 100mA 15nA 200mW 45V 5V 650mV 800 PNP SOT-23 Bipolar (BJT) ROHSSTMicroelectronicsBipolar (BJT)BC858
SOT-23SOT-23 Bipolar (BJT) ROHSHTBipolar Transistors - BJT
README
README.mdkilter
A compact multimode eurorack filter with MS-20 style resonance. Filter core and resonance based on René Schmitz' MS-20 schematic.
Features
- Voltage controlled filter with 4 simultaneous outputs:
- 1-pole high pass
- 2-pole low pass
- 2-pole band pass (it's kind of an afterthought and needs to be improved, but it sounds okay)
- 2-pole notch with adjustable depth (via trimmer on back)
- Two frequency CV inputs, one with an attenuverter
- Voltage controlled resonance with adjustable drive
- Two inputs with linear cross-fade
- 6HP
Specifications
TODO: HP, power requirements, depth, input/output impedances and voltage ranges
Parts
132| Qty | Value | Footprint | References |
|---|---|---|---|
| 21 | 100nF | Capacitor_SMD:C_0603_1608Metric | C10, C11, C13, C14, C15, C16, C18, C20, C22, C23, C24, C25, C26, C27, C28, C29 +5 |
| 20 | 10K | Resistor_SMD:R_0603_1608Metric | R5, R6, R11, R16, R17, R18, R20, R25, R27, R28, R32, R35, R39, R52, R53, R56 +4 |
| 12 | 100K | Resistor_SMD:R_0603_1608Metric | R15, R30, R38, R40, R43, R45, R47, R51, R54, R55, R57, R58 |
| 11 | 1K | Resistor_SMD:R_0603_1608Metric | R10, R21, R36, R46, R48, R49, R50, R59, R60, R63, R64 |
| 8 | 220R | Resistor_SMD:R_0603_1608Metric | R3, R4, R12, R13, R24, R29, R33, R34 |
| 4 | 1nF | Capacitor_SMD:C_0603_1608Metric | C9, C12, C17, C19 |
| 4 | TL072 | Package_SO:TSSOP-8_4.4x3mm_P0.65mm | U1, U4, U7, U9 |
| 3 | 1M | Resistor_SMD:R_0603_1608Metric | R22, R23, R26 |
| 3 | 4.7K | Resistor_SMD:R_0603_1608Metric | R7, R19, R37 |
| 3 | TL074 | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U5, U8, U10 |
| 2 | 10uF | Capacitor_SMD:CP_Elec_5x5.3 | C1, C2 |
| 2 | 220 | Resistor_SMD:R_0603_1608Metric | FB1, FB2 |
| 2 | 220K | Resistor_SMD:R_0603_1608Metric | R14, R31 |
| 2 | 47K | Resistor_SMD:R_0603_1608Metric | R41, R44 |
| 2 | GREEN | LED_THT:LED_D3.0mm | D1, D7 |
| 2 | LM13700 | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U2, U6 |
| 1 | 0.47uF | Capacitor_SMD:C_0603_1608Metric | C7 |
| 1 | 1.8K | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | 15K | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 4.7nF | Capacitor_SMD:C_0603_1608Metric | C21 |
| 1 | 470K | Resistor_SMD:R_0603_1608Metric | R42 |
| 1 | 5K BALANCE | Potentiometer_SMD:Potentiometer_Bourns_TC33X_Vertical | RV6 |
| 1 | 5K NOTCH | Potentiometer_SMD:Potentiometer_Bourns_TC33X_Vertical | RV8 |
| 1 | 5K TUNE | Potentiometer_SMD:Potentiometer_Bourns_TC33X_Vertical | RV7 |
| 1 | B10K CUTOFF | covertneko_General:Potentiometer_Alpha_RD901F-40-00D_Single_Vertical | RV1 |
| 1 | B10K CV1LVL | covertneko_General:Potentiometer_Alpha_RD901F-40-00D_Single_Vertical | RV4 |
| 1 | B10K MIX IN | covertneko_General:Potentiometer_SongHuei_RD0904N-L25-KQ_Single_Vertical | RV5 |
| 1 | B10K Q | covertneko_General:Potentiometer_Alpha_RD901F-40-00D_Single_Vertical | RV3 |
| 1 | B10K QDRIVE | covertneko_General:Potentiometer_SongHuei_RD0904N-L25-KQ_Single_Vertical | RV2 |
| 1 | BC857 | Package_TO_SOT_SMD:SOT-363_SC-70-6 | Q2 |
| 1 | BC858 | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | BP | covertneko_Audio:PJ301M | J7 |
| 1 | BP | LED_THT:LED_D3.0mm_Clear | D5 |
| 1 | CV | LED_THT:LED_D3.0mm_Clear | D2 |
| 1 | CV1 | covertneko_Audio:PJ301M | J3 |
| 1 | CV2 | covertneko_Audio:PJ301M | J2 |
| 1 | HP | LED_THT:LED_D3.0mm_Clear | D3 |
| 1 | HP | covertneko_Audio:PJ301M | J4 |
| 1 | IN1 | covertneko_Audio:PJ301M | J8 |
| 1 | IN2 | covertneko_Audio:PJ301M | J6 |
| 1 | LM4040C5 | Package_TO_SOT_SMD:SOT-23 | U3 |
| 1 | LP | LED_THT:LED_D3.0mm_Clear | D4 |
| 1 | LP | covertneko_Audio:PJ301M | J5 |
| 1 | NOTCH | covertneko_Audio:PJ301M | J9 |
| 1 | NOTCH | LED_THT:LED_D3.0mm_Clear | D6 |
| 1 | POWER | Connector_IDC:IDC-Header_2x05_P2.54mm_Vertical | J10 |
| 1 | QCV | covertneko_Audio:PJ301M | J1 |
Questions
How big is the Kilter PCB?
It measures 30.5 × 110 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Kilter use?
132 parts, built around the TL072, LM13700M, BC857 and BC858. 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 Kilter KiCad files?
From the catrax/kilter repository on GitHub, at the commit this page was made from: the board is board/kilter.kicad_pcb and its schematic board/filter.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Kilter design in my own project?
Its repository states no licence, so its author keeps all rights: ask catrax before reusing the design.
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