Circuit
About the Circuit PCB
Circuit is an open source AVR/Arduino PCB design by mikeyfarrow, published on GitHub. It is a 2-layer board measuring 29 × 86.6 mm, with 57 components from 27 distinct parts.
Its main chip is the C14877, from the AVR/Arduino family. Other key parts include the DAC8562SDGSR, LM7805_TO220, C2873620 and C92651. By type, the board carries 24 resistors, 18 capacitors, 5 ICs, 5 connectors and 4 diodes.
Main components on the Circuit
Circuit bill of materials (BOM)
57 components, 27 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | DAC8562SDGSR | SOP50P490X110-10N | IC1 |
| 1 | LM7805_TO220 | TO-220-3_Horizontal_TabUp | U1 |
| 1 | C2873620 OPA4196xD | TSSOP-14_4.4x5mm_P0.65mm | U4 |
| 1 | C92651 6N137 | SOP254P1005X465-8N | U5 |
| 1 | C14877 ATmega328-A | TQFP-32_7x7mm_P0.8mm | U6 |
| 1 | PWR_IN | PinHeader_2x05_P2.54mm_Vertical | J1 |
| 1 | ISP connector | PinHeader_2x03_P2.54mm_Vertical | J2 |
| 1 | midi | PinHeader_1x03_P2.54mm_Vertical | J10 |
| 1 | back bottom | PinHeader_1x11_P2.54mm_Vertical | J11 |
| 1 | back top | PinHeader_1x07_P2.54mm_Vertical | J13 |
| 1 | 16MHz | XT9M20ANA20M | xtal1 |
| 2 | C2128 1N4148 | D_SOD-323_HandSoldering | D1, D7 |
| 2 | C8598 rpp diode | D_SOD-123F | D5, D6 |
| 6 | C14663 100n | C_0603_1608Metric | C1, C2, C3, C10, C12, C14 |
| 3 | C15849 1u | C_0603_1608Metric | C4, C15, C17 |
| 4 | C1647 18p | C_0603_1608Metric | C5, C6, C7, C16 |
| 1 | C1623 0.33u | C_0603_1608Metric | C8 |
| 2 | C263975 10u | CP_Elec_5x5.4 | C9, C11 |
| 1 | C14663 0.1u | C_0603_1608Metric | C13 |
| 1 | C21120 150n | C_0603_1608Metric | C18 |
Show 7 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | C407611 240k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R3 |
| 4 | C25819 47k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2, R4, R16, R17 |
| 4 | C22962 220R | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R5, R8, R10, R14 |
| 7 | C25804 10k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R6, R9, R11, R12, R13, R15, R24 |
| 3 | C21190 1k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R7, R18, R19 |
| 2 | C4216 33k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R20, R22 |
| 2 | C23206 56k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R21, R23 |
Circuit design files
The KiCad project lives in the mikeyfarrow/DFAM-x-ATMEGA repository on GitHub; these links point at the commit this page was built from.
Circuit: common questions
What microcontroller does the Circuit use?
The Circuit is built around the C14877, from the AVR/Arduino family.
How big is the Circuit PCB?
The Circuit measures 29 × 86.6 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Circuit?
57 components, from 27 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 Circuit design files?
From the mikeyfarrow/DFAM-x-ATMEGA repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.
Can I use the Circuit design in my own project?
The repository has no license, so all rights stay with mikeyfarrow. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Circuit 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.
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