TOP
About the TOP PCB
TOP is an open source PCB design by Chrismettal, published on GitHub under the CC-BY-SA-4.0 license. It is a 2-layer board measuring 52 × 63 mm, with 81 components from 40 distinct parts.
Other key parts include the ICL7660, L78L15_SOT89, TL074 and OPA2604. By type, the board carries 36 resistors, 30 capacitors, 4 ICs, 2 diodes and 1 connector.
It belongs with the audio and test & measurement designs in this gallery.
From the project
Complete audio effect stompbox ecosystem and collection of designs
This is a convenient system for quickly creating stompboxes, as well as a collection of designs made with this system.
The design is split into two boards, a lower and an upper one. The lower PCB handles all of the I/O, switching, and power stuff, while the upper one focuses on the individual effect. The two boards plug together and fit neatly inside a commonly used Hammond 1590B. For each finished design there is also a PCB frontpanel so I don't have to deal with any actual design work and can just hide my designs behind technical looking stuff. The actual boards take full advantage of…
Main components on the TOP
TOP bill of materials (BOM)
81 components, 40 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ICL7660 | SOP-8_3.9x4.9mm_P1.27mm | U1 |
| 1 | L78L15_SOT89 | SOT-89-3 | U2 |
| 1 | TL074 | SOIC-14_3.9x8.7mm_P1.27mm | U3 |
| 1 | OPA2604 | SOIC-8_3.9x4.9mm_P1.27mm | U4 |
| 1 | CONN_01X04 Conn_01x04 | JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J1 |
| 2 | BF545A | SOT-23 | QA1, QA2 |
| 1 | 100K Lin | Potentiometer_Alpha_RD901F-40-00D_Single_Vertical | RV1 |
| 1 | 1M lin | Potentiometer_Alpha_RD901F-40-00D_Single_Vertical | RV2 |
| 1 | 100K Log | Potentiometer_Alpha_RD901F-40-00D_Single_Vertical | RV3 |
| 1 | 10k Lin | Potentiometer_Alpha_RD901F-40-00D_Single_Vertical | RV4 |
| 2 | 25k Lin | Potentiometer_Alpha_RD901F-40-00D_Single_Vertical | RV5, RV6 |
| 2 | 1N4004 | D_SMA | D1, D2 |
| 1 | 10UF 10uF | CP_Elec_4x5.4 | C1 |
| 7 | 10UF 10uF | C_0805_2012Metric | C2, C3, C9, C13, C14, C20, C22 |
| 4 | 22NF 22nF | C_0603_1608Metric | C4, C21, C23, C24 |
| 1 | 470PF 470pF | C_0603_1608Metric | C5 |
| 1 | 2.2UF 2.2uF | C_0603_1608Metric | C6 |
| 2 | 10NF 10nF | C_0805_2012Metric | C7, C15 |
| 4 | 220NF 220nF | C_0603_1608Metric | C8, C10, C16, C25 |
| 1 | 100PF 100pF | C_0603_1608Metric | C11 |
Show 20 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 100NF 100nF | C_0603_1608Metric | C12 |
| 1 | 47NF 47nF | C_0603_1608Metric | C17 |
| 3 | 1NF 1nF | C_0603_1608Metric | C18, C27, C29 |
| 2 | 470NF 470nF | C_0603_1608Metric | C19, C28 |
| 1 | 68NF 68nF | C_0603_1608Metric | C26 |
| 1 | 100UF 100uF | CP_Elec_6.3x5.4_Nichicon | C30 |
| 1 | 51R | R_0603_1608Metric | R1 |
| 3 | 1M | R_0603_1608Metric | R2, R4, R24 |
| 13 | 10K | R_0603_1608Metric | R3, R5, R6, R9, R15, R16, R18, R25 +5 |
| 3 | 470K | R_0603_1608Metric | R7, R8, R35 |
| 2 | 2K2 | R_0603_1608Metric | R10, R28 |
| 1 | 22K | R_0603_1608Metric | R11 |
| 1 | 100K | R_0603_1608Metric | R12 |
| 3 | 1K | R_0603_1608Metric | R13, R23, R32 |
| 2 | 7K5 | R_0603_1608Metric | R14, R29 |
| 1 | 15K | R_0603_1608Metric | R17 |
| 3 | 47K | R_0603_1608Metric | R19, R20, R21 |
| 1 | 39K | R_0603_1608Metric | R22 |
| 1 | 470R | R_0603_1608Metric | R30 |
| 1 | 330R | R_0603_1608Metric | R34 |
TOP design files
The KiCad project lives in the Chrismettal/PedalDev repository on GitHub; these links point at the commit this page was built from.
TOP: common questions
How big is the TOP PCB?
The TOP measures 52 × 63 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the TOP?
81 components, from 40 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 TOP design files?
From the Chrismettal/PedalDev 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 TOP design in my own project?
Yes, under the terms of its CC-BY-SA-4.0 license, which Chrismettal chose for the repository.
More boards in PedalDev
YOU WHAT
52 × 63 mm47 parts2LCC-BY-SA-4.011
404
52 × 63 mm29 parts2LCC-BY-SA-4.011
UpperRaw
52 × 63 mm24 parts2LCC-BY-SA-4.011
LowerBuffer
52 × 40 mm18 parts2LCC-BY-SA-4.011
Lower
52 × 40 mm18 parts2LCC-BY-SA-4.011
LowerSmart
52 × 40 mm18 parts2LCC-BY-SA-4.011
Proto-Simple
52 × 63 mm5 parts2LCC-BY-SA-4.011
Similar boards
OtterCastAudioV2
Ottercast
50 × 49.3 mm216 parts4LMIT665
DB9 High-Low Signal Generator
nanographs
47 × 30 mm10 parts2LNo license370
OneInchEye
will127534
39 × 39 mm79 parts4LMIT346
FunBox
GuitarML
59.7 × 67.5 mm63 parts2LMIT278
Eurorack pmod
apfaudio
35 × 110 mm116 parts4LCERN-OHL-S-2.0239
XassetteAsterisk
SdtElectronics
56 × 56 mm137 parts2LCERN-OHL-W-2.0229