Retrospector Controls
About the Retrospector Controls PCB
Retrospector Controls is an open source PCB design by dchwebb, published on GitHub. It is a 2-layer board measuring 60 × 110 mm, with 32 components from 20 distinct parts.
Other key parts include the MCP6004. By type, the board carries 14 connectors, 3 diodes, 3 resistors, 1 IC and 1 capacitor.
It belongs with the audio and retro computing designs in this gallery.
From the project
Eurorack Delay Effect
Retrospector is a Eurorack format stereo digital delay.
Delay times can be set clocked or free-running and left and right channels can be independent or the right channel set as a multiple of the left channel. The delay times are switchable between short, long and reversed with maximum delay times over 5 minutes.
The feedback path can be filtered with settings allowing a sweep from low pass to high pass, or either separately. The delayed signal can be modulated for subtle chorussing effects or left and right channels fed back into each other to widen dual mono sources.
Main components on the Retrospector Controls
Retrospector Controls bill of materials (BOM)
32 components, 20 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MCP6004 TB62781FNG | SSOP-20_4.4x6.5mm_Pitch0.65mm | U1 |
| 4 | Conn_01x08_Female | Socket_Strip_Straight_1x08_Pitch2.54mm | J1, J2, J3, J4 |
| 1 | Audio_In_L | THONKICONN_hole | J5 |
| 1 | Delay_CV_L | THONKICONN_hole | J6 |
| 1 | Mix_CV | THONKICONN_hole | J7 |
| 1 | Delay_CV_R | THONKICONN_hole | J8 |
| 1 | Clock | THONKICONN_hole | J9 |
| 1 | Feedback_CV | THONKICONN_hole | J10 |
| 1 | Audio_In_R | THONKICONN_hole | J11 |
| 1 | Audio_Out_R | THONKICONN_hole | J12 |
| 1 | Audio_Out_L | THONKICONN_hole | J13 |
| 1 | Filter | THONKICONN_hole | J14 |
| 3 | SW_SPDT_MSM | SPDT_SubMiniature_Aligned | DELAY_MODE1, FILTER_MODE1, WIDTH_MODE1 |
| 5 | B10k | Alpha_9mm_Potentiometer_Aligned | Delay_Pot_L1, Delay_Pot_R1, Feedback_Pot1, Mix_Pot1, Tone_Pot1 |
| 2 | SW_Push | SW_PUSH_6mm_aligned | LOCK1, RESET1 |
| 3 | 1N5819 LED_RGBA | LED_RGB_PLCC4 | D1, D2, D3 |
| 1 | 100PF 47uF | CP_Elec_5x5.8 | C1 |
| 1 | 75K 3k3 | R_0603_HandSoldering | R1 |
| 1 | 47K 3k3 | R_0603_HandSoldering | R2 |
| 1 | 20K 3k3 | R_0603_HandSoldering | R3 |
Retrospector Controls design files
The KiCad project lives in the dchwebb/Retrospector repository on GitHub; these links point at the commit this page was built from.
Retrospector Controls: common questions
How big is the Retrospector Controls PCB?
The Retrospector Controls measures 60 × 110 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Retrospector Controls?
32 components, from 20 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 Retrospector Controls design files?
From the dchwebb/Retrospector 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 Retrospector Controls design in my own project?
The repository has no license, so all rights stay with dchwebb. Use it as a reference, and ask the author before reusing the design.
More boards in Retrospector
Similar boards
OpenTendo
Redherring32
196.3 × 118.7 mm93 parts2LTAPR-OHL-1.0850
PicoGUS Hand386
polpo
29.2 × 75.2 mm43 parts4LGPL-2.0800
OtterCastAudioV2
Ottercast
50 × 49.3 mm216 parts4LMIT665
24pin flex interposer
Wren6991
29 × 32 mm3 parts2LNo license508
Sram dev board
50 × 50 mm12 parts2LNo license508
GB-BRK-SLOT-A
Gekkio
81 × 80 mm20 parts2LCC-BY-4.0376