2 layers99.1 × 99.1 mm
2 layers99.1 × 99.1 mm
Brain
eblade/synthSynth stuff
- Size
- 99.1 × 99.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 84
- Nets
- 94
- Pads
- 321
- Tracks, vias
- 451, 0
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 31 Oct 2019
- Updated
- 18 Sep 2024
Overview
Brain is an open-source printed circuit board by eblade, from the eblade/synth repository on GitHub. It is a 2-layer board of 99.1 × 99.1 mm with 84 parts on 94 nets, routed with 451 tracks and 0 vias.
It is built around the ATMEGA328P-PU, TL072 and 74HC595. Its parts include 39 resistors, 15 capacitors, 8 connectors, 7 ICs and 7 diodes. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
3
ATMEGA328P-PU
DIP-28-300mil-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH DIP-28-300mil Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
TL072
SOP-8-18V~18V 0℃~+70℃ 1.4mA 1.5nA 10V/us 10mV 2 2.5nA 3MHz 85dB SOP-8 Operational Amplifier ROHSGcoreOperational Amplifier
74HC595
SOP-16-40℃~+85℃ 1 100ns@5V,50pF 10MHz 2V~6V 74HC 8 Serial-to-Serial or Parallel Tri-State SOP-16 Shift Registers ROHSGRShift Registers
Parts
84| Qty | Value | Footprint | References |
|---|---|---|---|
| 29 | 100K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R10, R11, R12, R13, R14, R15, R20, R21, R22, R23, R24, R25, R26, R27, R28, R29 +13 |
| 8 | .1uF | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C4, C5, C6, C7, C10, C11, C12, C13 |
| 7 | 1K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R4, R5, R6, R16, R17, R18, R19 |
| 6 | S | Diode_THT:D_DO-34_SOD68_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6 |
| 4 | M3 | MountingHole:MountingHole_3.2mm_M3_Pad | H1, H2, H3, H4 |
| 3 | TL074 | Package_DIP:DIP-14_W7.62mm | U3, U7, U8 |
| 2 | 100nF | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C17, C18 |
| 2 | 10K | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R1, R41 |
| 2 | 10uF | Capacitor_THT:CP_Radial_D5.0mm_P2.00mm | C8, C9 |
| 2 | 22pF | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C14, C15 |
| 2 | 74HC595 | Package_DIP:DIP-16_W7.62mm | U5, U6 |
| 2 | Ferrite_Bead | Inductor_THT:L_Axial_L6.6mm_D2.7mm_P10.16mm_Horizontal_Vishay_IM-2 | FB1, FB2 |
| 1 | 15pF | Capacitor_THT:C_Disc_D3.0mm_W1.6mm_P2.50mm | C16 |
| 1 | 1N4148 | Diode_THT:D_A-405_P7.62mm_Horizontal | D7 |
| 1 | 330 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R40 |
| 1 | ATmega328P-PU | Package_DIP:DIP-28_W7.62mm | U2 |
| 1 | BOTTOM | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J2 |
| 1 | Crystal | Crystal:Crystal_HC18-U_Vertical | Y1 |
| 1 | FROM_OUTPUTS | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J7 |
| 1 | Filtered Power | Connector_PinHeader_2.54mm:PinHeader_2x06_P2.54mm_Vertical | J4 |
| 1 | ICSP | Connector_PinHeader_2.54mm:PinHeader_2x05_P2.54mm_Vertical | J5 |
| 1 | Keyboard | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J3 |
| 1 | RIGHT | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J8 |
| 1 | RST | Button_Switch_THT:SW_PUSH_6mm | SW1 |
| 1 | TL072 | Package_DIP:DIP-8_W7.62mm | U4 |
| 1 | TOP | Connector_PinSocket_2.54mm:PinSocket_1x16_P2.54mm_Vertical | J1 |
| 1 | TO_OUTPUTS | Connector_PinHeader_2.54mm:PinHeader_1x17_P2.54mm_Vertical | J6 |
Questions
How big is the Brain PCB?
It measures 99.1 × 99.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Brain use?
84 parts, built around the ATMEGA328P-PU, TL072 and 74HC595. 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 Brain KiCad files?
From the eblade/synth repository on GitHub, at the commit this page was made from: the board is megasequencer/brain/brain/brain.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Brain design in my own project?
Its repository states no licence, so its author keeps all rights: ask eblade before reusing the design.
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