2 layers56 × 65 mm
SeaTalk1
dotnet/iot
This repo includes .NET Core implementations for various IoT boards, chips, displays and PCBs.
24 parts2.4kMIT
2 layers127 × 127 mm
Shmample
DIY-Nabra/shmample3A rungling sample-and-hold sequencer
- Size
- 127 × 127 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 185
- Nets
- 118
- Pads
- 454
- Tracks, vias
- 642, 0
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 22 May 2025
- Updated
- 22 Jul 2026
Overview
Shmample is an open-source printed circuit board by DIY-Nabra, from the DIY-Nabra/shmample repository on GitHub. It is a 2-layer board of 127 × 127 mm with 185 parts on 118 nets, routed with 642 tracks and 0 vias.
It is built around the BC547 and BC557. Its parts include 74 resistors, 28 capacitors, 27 diodes, 14 transistors and 8 ICs.
Main components
2README
README.mdSh'mample
Sh'mample is a shift register driven sample and hold sequencer, capable of rungling. Inspired in equal parts by the Ciat-Lonbarde Man with the Red Steam, and the Buchla 264.
For use with Ciat-Lonbarde instruments.
Parts
185| Qty | Value | Footprint | References |
|---|---|---|---|
| 23 | 10k | diy-nabra:r3 | R10, R21, R22, R23, R29, R30, R31, R32, R33, R34, R35, R36, R41, R42, R43, R44 +7 |
| 17 | 100k | diy-nabra:r3 | R3, R12, R15, R16, R20, R24, R25, R26, R27, R28, R37, R38, R39, R40, R49, R50 +1 |
| 10 | 1k | diy-nabra:r3 | R2, R45, R46, R47, R48, R58, R61, R62, R63, R64 |
| 10 | BC547 | diy-nabra:qnpn | Q1, Q3, Q4, Q7, Q9, Q10, Q11, Q12, Q13, Q14 |
| 9 | 100nF | diy-nabra:cpoly104_small | C2, C3, C4, C5, C6, C7, C8, C14, C23 |
| 9 | LED | diy-nabra:led | D10, D11, D12, D13, D15, D24, D25, D26, D27 |
| 8 | 4.7k | diy-nabra:r3 | R6, R7, R9, R14, R17, R18, R19, R59 |
| 8 | 9V1 | diy-nabra:doz3 | D16, D17, D18, D19, D20, D21, D22, D23 |
| 6 | 4148 | diy-nabra:do3 | D4, D6, D7, D8, D9, D14 |
| 4 | 100 | diy-nabra:r3 | R68, R69, R70, R71 |
| 4 | 10nF | diy-nabra:cpoly103 | C15, C16, C17, C18 |
| 4 | 1uF | diy-nabra:cpoly105 | C19, C20, C21, C22 |
| 4 | 22uF | diy-nabra:cel1 | C11, C25, C26, C27 |
| 4 | BC557 | diy-nabra:qpnp | Q2, Q5, Q6, Q8 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_3.2mm_M3_ISO7380_Pad | H1, H2, H3, H4 |
| 3 | 10uF | diy-nabra:cel1 | C9, C13, C24 |
| 3 | 1M | diy-nabra:r3 | R51, R55, R57 |
| 3 | 22k | diy-nabra:r3 | R53, R56, R66 |
| 2 | * | diy-nabra:chairy | C10, C12 |
| 2 | 2.2M | diy-nabra:r3 | R11, R13 |
| 2 | 324 | diy-nabra:dip14 | U4, U6 |
| 2 | 4001 | diy-nabra:do3 | D1, D3 |
| 2 | 470k | diy-nabra:r3 | R4, R8 |
| 2 | 47k | diy-nabra:r3 | R1, R52 |
| 2 | B50k | diy-nabra:wnob | RV1, RV2 |
| 1 | 100uF | diy-nabra:cel2 | C28 |
| 1 | 10V | diy-nabra:doz3 | D5 |
| 1 | 1_W | diy-nabra:wnob1 | RV3 |
| 1 | 2200uF | diy-nabra:cel2 | C1 |
| 1 | 24V | diy-nabra:doz3 | D2 |
| 1 | 2_W | diy-nabra:wnob2 | RV4 |
| 1 | 358 | diy-nabra:dip8 | U2 |
| 1 | 3_W | diy-nabra:wnob3 | RV5 |
| 1 | 40106 | diy-nabra:dip14 | U5 |
| 1 | 4015 | diy-nabra:dip16 | U7 |
| 1 | 4052 | diy-nabra:dip16 | U8 |
| 1 | 4066 | diy-nabra:dip14 | U3 |
| 1 | 4_W | diy-nabra:wnob4 | RV6 |
| 1 | 500mA | Fuse:Fuse_Bourns_MF-RG500 | F1 |
| 1 | Barrel_Jack_Switch | Connector_BarrelJack:BarrelJack_Horizontal | J2 |
| 1 | Brown | diy-nabra:wsquin | TP3 |
| 1 | Conn_01x04_Socket | diy-nabra:powern | J1 |
| 1 | Data | diy-nabra:wtrin | TP9 |
| 1 | Hi | diy-nabra:wvout | TP4 |
| 1 | In-1 | diy-nabra:wsquin | TP11 |
| 1 | In-2 | diy-nabra:wsqout | TP12 |
| 1 | In-3 | diy-nabra:wsqu3in | TP13 |
| 1 | In-4 | diy-nabra:wsqu4in | TP14 |
| 1 | Inv | diy-nabra:wtrin2 | TP1 |
| 1 | LM7809_TO220 | Package_TO_SOT_THT:TO-220F-3_Horizontal_TabDown | U1 |
| 1 | Out-1 | diy-nabra:wtrin | TP15 |
| 1 | Out-2 | diy-nabra:wtrin2 | TP16 |
| 1 | Out-3 | diy-nabra:wtrin3 | TP17 |
| 1 | Out-4 | diy-nabra:wtrin4 | TP18 |
| 1 | Pls-1 | diy-nabra:wcircin | TP5 |
| 1 | Pls-2 | diy-nabra:wcirc2in | TP6 |
| 1 | Pls-3 | diy-nabra:wcirc3in | TP7 |
| 1 | Pls-4 | diy-nabra:wcirc4in | TP8 |
| 1 | Rung | diy-nabra:wsqu2in | TP10 |
| 1 | Select-Out | diy-nabra:wsqout | TP19 |
| 1 | ThePowerOut | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | PowerPos1 |
| 1 | ThePowerOut2 | Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical | PowerPos2 |
| 1 | Ver | diy-nabra:wtrin | TP2 |
Similar boards
- 2 layers148.8 × 132.2 mm
Usbflashprog
robsonsmartins/usbflashprog
A memory device programmer (Flash/EPROM/E2PROM) board and software, connected to PC by USB port.
125 parts36 - 2 layers83.8 × 72.4 mm
- 2 layers13 × 0.5 mm
- 2 layers167.8 × 200.6 mm
Random Jazz Generator
telec16/modular-synth
Little side project, don't expect much updates.
132 parts16 - 2 layers100 × 100 mm
WhiteBoy
nodep/NovaBox
Circuit and PCB design of simple Bluetooth stereo receiver and amplifier
111 parts11GPL-3.0 - 2 layers53 × 55.1 mm
- 2 layers135.8 × 128.4 mm
Questions
How big is the Shmample PCB?
It measures 127 × 127 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Shmample use?
185 parts, built around the BC547 and BC557. 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 Shmample KiCad files?
From the DIY-Nabra/shmample repository on GitHub, at the commit this page was made from: the board is Shmample/Shmample.kicad_pcb and its schematic Shmample/2roll.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Shmample design in my own project?
Its repository states no licence, so its author keeps all rights: ask DIY-Nabra before reusing the design.