Kicad cpu board
About the Kicad cpu board
Kicad cpu board is an open source AVR/Arduino PCB design by matthewcieplak, published on GitHub. It is a 2-layer board measuring 78.5 × 69 mm, with 56 components from 34 distinct parts.
Its main chip is the 1727-2821-6, from the AVR/Arduino family. Other key parts include the MCP23S17-E/SO, W25Q80DVSN, TL072 and MCP4822. By type, the board carries 18 resistors, 16 capacitors, 6 ICs, 4 transistors, 4 connectors and 4 diodes.
It belongs with the audio designs in this gallery.
From the project
Code and schematics for the Super Sixteen Eurorack sequencer
At just 20HP, it is a compact and powerful 64-step control voltage sequencer with 99 song patch memory, motion recording, scale selection, realtime pitch and rhythm effects, paraphonic modes, generative mutations, and a uniquely powerful two-handed programming interface.
Video blogs documenting the sequencer progress are available on youtube.
USER MANUAL (pdf) BUILD GUIDE (pdf) BILL OF MATERIALS (octopart list) INTERACTIVE BOM (html - for easy part placement) CPU board / Control board Video build guide 1v/oct calibration tutorial video Build support thread on Mod Wiggler ModularGrid page
Main components on the Kicad cpu board
Kicad cpu board bill of materials (BOM)
56 components, 34 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 1727-2821-6 L7805 Nexperia USA, Inc | TO-220-3_Horizontal | U101 |
| 1 | MCP23S17-E/SO LP2950-3.3 Microchip | TO-92_Inline_Wide | U102 |
| 1 | 1727-2821-6 ATmega328-PU Nexperia USA, Inc | DIP-28_W7.62mm | U103 |
| 1 | W25Q80DVSN | SOIC-8_3.9x4.9mm_Pitch1.27mm | U104 |
| 1 | TL072 | DIP-8_W7.62mm | U105 |
| 1 | MCP4822 | DIP-8_W7.62mm | U106 |
| 3 | MMBT3906LT1GOS 2N7000 ON Semiconductor | TO-92_Inline_Wide | Q101, Q102, Q103 |
| 1 | MMBT3904LT3GOS 2N7000 ON Semiconductor | TO-92_Inline_Wide | Q104 |
| 1 | 16mHz | Crystal_HC18-U_Vertical | Y101 |
| 1 | S7008 ICSP Header Sullins | Pin_Header_Straight_2x03_Pitch2.54mm | J101 |
| 1 | S7014 Conn_01x10_Male Sullins | Pin_Header_Straight_1x10_Pitch2.54mm | J102 |
| 1 | 754-1656-5 Conn_01x16_Female Kingbright | Pin_Header_Straight_1x16_Pitch2.54mm | J103 |
| 1 | Conn_02x05_Odd_Even Qingpu | Pin_Header_Straight_2x05_Pitch2.54mm | J104 |
| 2 | 160-1940 1N4733A Lite-On | D_A-405_P7.62mm_Horizontal | D101, D102 |
| 2 | 160-1940 1N4001 Lite-On | D_DO-15_P10.16mm_Horizontal | D103, D104 |
| 3 | 220uH | L_Axial_L6.6mm_D2.7mm_P10.16mm_Horizontal_Vishay_IM-2 | L101, L102, L103 |
| 1 | 493-2225-6 47uF Nichicon | CP_Radial_D6.3mm_P2.50mm | C101 |
| 1 | 399-1100-6 1uF Kemet | CP_Radial_D4.0mm_P2.00mm | C102 |
| 2 | 399-7821-6 100nF Kemet | C_Disc_D5.0mm_W2.5mm_P2.50mm | C103, C106 |
| 1 | 493-2225-6 100nF Nichicon | C_Disc_D5.0mm_W2.5mm_P2.50mm | C104 |
Show 14 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 399-1100-6 22pf Kemet | C_Disc_D3.0mm_W2.0mm_P2.50mm | C105 |
| 1 | 493-2225-6 22pf Nichicon | C_Disc_D3.8mm_W2.6mm_P2.50mm | C107 |
| 1 | 399-1100-6 47uF Kemet | CP_Radial_D6.3mm_P2.50mm | C108 |
| 1 | 399-7821-6 330uf Kemet | CP_Radial_D6.3mm_P2.50mm | C109 |
| 1 | 47uF | CP_Radial_D6.3mm_P2.50mm | C110 |
| 4 | 100nF | C_Disc_D5.0mm_W2.5mm_P2.50mm | C111, C112, C115, C116 |
| 2 | 22pf | C_Disc_D3.0mm_W2.0mm_P2.50mm | C113, C114 |
| 1 | RMCF0603FT100R 1M Stackpole Electronics Inc | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R101 |
| 1 | RMCF0603FT100R 10k Stackpole Electronics Inc | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R102 |
| 1 | RMCF0603FT1K00 1k Stackpole Electronics Inc | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R103 |
| 10 | RMCF0603FT100R 1K Stackpole Electronics Inc | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R104, R105, R106, R107, R108, R109, R110, R111 +2 |
| 2 | RMCF0603FT1K00 10k Stackpole Electronics Inc | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R114, R118 |
| 2 | RMCF0603FT680R 10k Stackpole Electronics Inc | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R115, R117 |
| 1 | RMCF0603FT680R 1k Stackpole Electronics Inc | R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R116 |
Kicad cpu board design files
The KiCad project lives in the matthewcieplak/super-sixteen repository on GitHub; these links point at the commit this page was built from.
Kicad cpu board: common questions
What microcontroller does the Kicad cpu board use?
The Kicad cpu board is built around the 1727-2821-6, from the AVR/Arduino family.
How big is the Kicad cpu board?
The Kicad cpu board measures 78.5 × 69 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Kicad cpu board?
56 components, from 34 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 Kicad cpu board design files?
From the matthewcieplak/super-sixteen repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Kicad cpu board design in my own project?
The repository has no license, so all rights stay with matthewcieplak. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Kicad cpu board without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.
More boards in super-sixteen
AVR/ArduinoSuper Sixteen v1
111.3 × 106.4 mm141 parts2LNo license172
Kicad control board smt
100 × 110 mm97 parts2LNo license172
Kicad control board
100 × 110 mm97 parts2LNo license172
AVR/ArduinoKicad cpu board smt
78.5 × 69 mm56 parts2LNo license172
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