Psychic barnacle
About the Psychic barnacle PCB
Psychic barnacle is an open source AVR/Arduino PCB design by deffener, published on GitHub. It is a 2-layer board measuring 47.8 × 33.6 mm, with 25 components from 20 distinct parts.
Its main chip is the ATmega328P-M, from the AVR/Arduino family. Other key parts include the LM7805_TO220. By type, the board carries 8 capacitors, 6 resistors, 3 connectors, 2 ICs, 2 switches and 2 diodes.
From the project
Randomly named repository for ee.ele.250 :)
Main components on the Psychic barnacle
Psychic barnacle bill of materials (BOM)
25 components, 20 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LM7805_TO220 | TO-220F-3_Vertical | U1 |
| 1 | ATmega328P-M | QFN-32-1EP_5x5mm_P0.5mm_EP3.1x3.1mm | U2 |
| 1 | ISP | PinHeader_2x03_P2.54mm_Vertical | J1 |
| 1 | UART | PinHeader_2x02_P2.00mm_Vertical | J2 |
| 1 | Barrel_Jack_Switch | BarrelJack_Kycon_KLDX-0202-xC_Horizontal | J3 |
| 1 | Speaker | PinHeader_1x02_P2.54mm_Vertical | LS1 |
| 1 | SW_Push | SW_Push_1P1T_XKB_TS-1187A | SW1 |
| 1 | SW_SPST | Nidec_Copal_CAS-120A | SW2 |
| 1 | 9C-16.000MEEJ-T | Crystal_SMD_ECS_CSM3X-2Pin_7.6x4.1mm | XTAL1 |
| 1 | LED | LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1 |
| 1 | 1N4007 | D_SOD-123F | D2 |
| 2 | 100n | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2 |
| 3 | 1u | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C4, C5 |
| 2 | 22p | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C6, C7 |
| 1 | 22n | C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C8 |
| 2 | 10k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R5 |
| 1 | 2k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2 |
| 1 | 100k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3 |
| 1 | 10k | Potentiometer_ACP_CA9-VSMD_Vertical | R4 |
| 1 | 270R | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R6 |
Psychic barnacle design files
The KiCad project lives in the deffener/psychic-barnacle repository on GitHub; these links point at the commit this page was built from.
- Layoutee-ele-250.kicad_pcb
- Schematicee-ele-250.kicad_sch
Psychic barnacle: common questions
What microcontroller does the Psychic barnacle use?
The Psychic barnacle is built around the ATmega328P-M, from the AVR/Arduino family.
How big is the Psychic barnacle PCB?
The Psychic barnacle measures 47.8 × 33.6 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Psychic barnacle?
25 components, from 20 distinct parts. The full bill of materials is listed on this page.
Where can I download the Psychic barnacle design files?
From the deffener/psychic-barnacle repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Psychic barnacle design in my own project?
The repository has no license, so all rights stay with deffener. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Psychic barnacle 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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