Twangilizer
About the Twangilizer PCB
Twangilizer is an open source PCB design by shannon-greenlight, published on GitHub. It is a 4-layer board measuring 101.3 × 110 mm, with 454 components from 81 distinct parts.
Other key parts include the TL072CP, TL071, LM317_SOT-223, CD4046 and CD4017. By type, the board carries 205 resistors, 122 capacitors, 47 ICs, 29 diodes, 12 connectors and 12 test points.
From the project
4 channel harmonic generator
Twangilizer features one signal input, an analog signal output, 4 digital harmonic outputs, 4 CV bias level adjustment pots, and four CV inputs to the VCAs. It also features harmonic selection controls: Four 8 position rotary switches to select the harmonic from the above list. And there is a toggle switch per channel that selects divide by one, or divide by two.
Main components on the Twangilizer
Twangilizer bill of materials (BOM)
454 components, 81 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 12 | TL072CP | SOIC-8_3.9x4.9mm_P1.27mm | U1, U3, U5, U16, U17, U22, U23, U28 +4 |
| 8 | TL071 | SOT-353_SC-70-5 | U2, U36, U38, U39, U40, U44, U45, U46 |
| 1 | LM317_SOT-223 | SOT-223-3_TabPin2 | U4 |
| 8 | CD4046 | TSSOP-16_4.4x5mm_P0.65mm | U6, U7, U8, U14, U18, U19, U24, U25 |
| 8 | CD4017 | SOIC-16_3.9x9.9mm_P1.27mm | U9, U10, U11, U15, U20, U21, U26, U27 |
| 2 | CD4013 | SOIC-14_3.9x8.7mm_P1.27mm | U12, U13 |
| 4 | NSL-32SR3 | NSL-32SR3 | U30, U31, U34, U35 |
| 4 | LM13700 | SOIC-16_3.9x9.9mm_P1.27mm | U37, U41, U42, U43 |
| 1 | MMBT3904 | SOT-23 | Q2 |
| 1 | MMBT3906 | SOT-23 | Q3 |
| 10 | 3.5mm Jack | Jack_3.5mm_QingPu_WQP-PJ398SM_Vertical | J1, J2, J3, J4, J5, J7, J8, J9 +2 |
| 1 | 2x5 Header | PinHeader_2x05_P2.54mm_Vertical_SMD | J6 |
| 1 | Conn_01x02_Male | PinHeader_1x02_P2.54mm_Vertical | J13 |
| 1 | TC33X-2-103E 500 Bourns Inc. | Trimpot_3.8mmx3.6mm_TC33X-2-103E | RV1 |
| 8 | TC33X-2-103E 50K Bourns Inc. | Trimpot_3.8mmx3.6mm_TC33X-2-103E | RV2, RV3, RV4, RV5, RV6, RV7, RV8, RV9 |
| 4 | 1K | Potentiometer_Bourns_PTV09A-1_Single_Vertical | RV10, RV11, RV14, RV15 |
| 4 | TC33X-2-103E 5K Bourns Inc. | Trimpot_3.8mmx3.6mm_TC33X-2-103E | RV12, RV13, RV16, RV17 |
| 4 | SW_Rotary8 | CPA_8 | SW1, SW2, SW3, SW8 |
| 4 | SW_SPDT | Toggle_Switch_100SP1T1B4M2QE | SW4, SW5, SW6, SW7 |
| 12 | TestPoint | TestPoint_Loop_D2.54mm_Drill1.5mm_Beaded | TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP12 +4 |
Show 61 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 12 | BAT54S | SOT-23 | D1, D2, D5, D6, D7, D9, D13, D17 +4 |
| 10 | BAT54J | D_SOD-323F | D3, D8, D31, D32, D33, D34, D35, D36 +2 |
| 1 | RED LED | LED_D3.0mm | D4 |
| 1 | 1N4148 | D_SOD-123 | D15 |
| 1 | GREEN LED | LED_D3.0mm | D16 |
| 4 | YELLOW LED | LED_D3.0mm | D25, D26, D27, D28 |
| 2 | 100uF | CP_Elec_6.3x5.4_Nichicon | C1, C2 |
| 4 | 20pF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C3, C6, C46, C47 |
| 53 | 100nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C4, C5, C10, C15, C16, C18, C19, C29 +45 |
| 1 | 220nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C7 |
| 5 | 330pF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C8, C22, C23, C24, C28 |
| 15 | 100nF | C_0603_1608Metric | C9, C44, C45, C48, C49, C77, C114, C115 +7 |
| 5 | 10uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C11, C25, C26, C27, C30 |
| 2 | 2.7nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C12, C17 |
| 1 | 2nF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C13 |
| 5 | 2.2uF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C14, C40, C43, C50, C51 |
| 1 | 270pF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C20 |
| 4 | 10pF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C21, C76, C78, C79 |
| 8 | 22nF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C41, C42, C88, C89, C90, C91, C92, C93 |
| 4 | 2.2nF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C52, C53, C70, C71 |
| 4 | 4.7uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C56, C57, C72, C73 |
| 4 | 100pF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C64, C65, C74, C75 |
| 4 | 22nF | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C110, C111, C112, C113 |
| 9 | 510 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3, R4, R28, R44, R45, R48 +1 |
| 29 | 10K | R_0603_1608Metric | R5, R6, R7, R8, R9, R14, R30, R31 +21 |
| 2 | 10K .1% | R_0603_1608Metric | R10, R15 |
| 2 | 100K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R11, R16 |
| 2 | 2K | R_0603_1608Metric | R12, R25 |
| 1 | 88.7K | R_0603_1608Metric | R13 |
| 1 | 7.87K | R_0603_1608Metric | R17 |
| 1 | 3.65K | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R18 |
| 1 | 5.1K | R_0603_1608Metric | R19 |
| 2 | 16.5K | R_0603_1608Metric | R20, R23 |
| 1 | 620 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R21 |
| 1 | 200K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R22 |
| 2 | 68K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R24, R27 |
| 1 | 59K | R_0603_1608Metric | R26 |
| 25 | 1K | R_0603_1608Metric | R29, R118, R119, R128, R129, R131, R132, R138 +17 |
| 8 | 27K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R33, R35, R37, R40, R52, R54, R82, R84 |
| 8 | 1.5K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R34, R36, R38, R41, R53, R55, R83, R85 |
| 4 | 12K | R_0603_1608Metric | R46, R47, R218, R219 |
| 4 | 162K | R_0603_1608Metric | R56, R62, R86, R91 |
| 4 | 154K | R_0603_1608Metric | R57, R63, R87, R92 |
| 8 | 210K | R_0603_1608Metric | R58, R64, R88, R93, R112, R115, R122, R125 |
| 4 | 300K | R_0603_1608Metric | R59, R65, R89, R94 |
| 4 | 237K | R_0603_1608Metric | R60, R61, R90, R95 |
| 8 | 150K | R_0603_1608Metric | R66, R73, R96, R102, R114, R117, R124, R127 |
| 4 | 174K | R_0603_1608Metric | R67, R74, R97, R103 |
| 4 | 261K | R_0603_1608Metric | R68, R75, R98, R104 |
| 4 | 287K | R_0603_1608Metric | R69, R76, R99, R105 |
| 4 | 191K | R_0603_1608Metric | R70, R72, R100, R106 |
| 4 | 200K | R_0603_1608Metric | R71, R77, R101, R107 |
| 4 | 52.3K | R_0603_1608Metric | R78, R79, R108, R109 |
| 4 | 120K | R_0603_1608Metric | R110, R111, R120, R121 |
| 16 | 20K | R_0603_1608Metric | R113, R116, R123, R126, R134, R135, R137, R153 +8 |
| 9 | 4.7K | R_0603_1608Metric | R136, R140, R159, R160, R161, R171, R172, R173 +1 |
| 9 | 1M | R_0603_1608Metric | R174, R175, R176, R177, R186, R187, R188, R189 +1 |
| 4 | 205K | R_0603_1608Metric | R178, R179, R180, R181 |
| 4 | 2.55M | R_0603_1608Metric | R182, R183, R184, R185 |
| 2 | 100K | R_0603_1608Metric | R190, R193 |
| 1 | 10.7K | R_0603_1608Metric | R196 |
Twangilizer design files
The KiCad project lives in the shannon-greenlight/twangilizer repository on GitHub; these links point at the commit this page was built from.
- Layoutmain/main.kicad_pcb
- Schematicmain/main.kicad_sch
- BOMmain/bom/other/other_bom.xlsx
Twangilizer: common questions
How big is the Twangilizer PCB?
The Twangilizer measures 101.3 × 110 mm, has 4 copper layers and is 4.69 mm thick.
How many components are on the Twangilizer?
454 components, from 81 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 Twangilizer design files?
From the shannon-greenlight/twangilizer 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 Twangilizer design in my own project?
The repository has no license, so all rights stay with shannon-greenlight. Use it as a reference, and ask the author before reusing the design.
