2 layers97 × 49 mm
2 layers
Squarewave
dunz0r/CircuitsSchematics, PCBs, libs
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 72
- Nets
- 60
- Pads
- 247
- Tracks, vias
- 84, 0
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 3
- Created
- 7 Jun 2013
- Updated
- 11 Aug 2014
Overview
Squarewave is an open-source printed circuit board by dunz0r, from the dunz0r/Circuits repository on GitHub. It is a 2-layer board with 72 parts on 60 nets, routed with 84 tracks and 0 vias.
It is built around the ATMEGA328P-AU, ITR8307 and 74HC595. Its parts include 26 resistors, 21 capacitors, 13 ICs, 4 connectors and 3 switches. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
3
ATMEGA328P-AU
TQFP-32(7x7)-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH TQFP-32(7x7) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
ITR8307
插件1.2V 20us@100uA,1kΩ 20us@100uA,1kΩ 940nm Phototransistor 插件 Reflective Optical Interrupters ROHSEverlight ElectronicsReflective Optical Interrupters
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
README
README.mdMy collection libs, schematics, pcbs Some done by me, some done by others
Parts
72| Qty | Value | Footprint | References |
|---|---|---|---|
| 20 | 220 | SM0603 | R10, R11, R12, R13, R14, R15, R17, R18, R19, R20, R21, R22, R23, R24, R25, R26 +4 |
| 10 | 10nF | c_0805 | C10, C11, C12, C13, C14, C15, C16, C17, C18, C19 |
| 10 | ITR8307 | ITR8307 | U3, U4, U5, U6, U7, U8, U9, U10, U11, U12 |
| 4 | 100nf | c_0805 | C8, C9, C20, C21 |
| 3 | 100nF | c_0805 | C5, C6, C7 |
| 2 | 100uF | CV3-30PF | C1, C4 |
| 2 | 10k | SM0603 | R3, R4 |
| 2 | 22pF | c_0805 | C2, C3 |
| 2 | 4.7k | SM0603 | R1, R2 |
| 1 | 10k | PIN_ARRAY_3X1 | RV1 |
| 1 | 1N4400 | D4 | D2 |
| 1 | 1N4401 | D4 | D1 |
| 1 | 1k | SM0603 | R5 |
| 1 | 20MHz | HC-49V | X1 |
| 1 | 74HC595 | SO16N | U2 |
| 1 | 7805 | LM78XXV | U1 |
| 1 | ATMEGA328P-A | TQFP32 | IC1 |
| 1 | AVR-ISP6 | pin_array_3x2 | P1 |
| 1 | BATTERY | PIN_ARRAY_2X1 | P3 |
| 1 | DISPLAY_HD44780 | SIL-18 | LCD1 |
| 1 | MOTORS | PIN_ARRAY_2X2 | P2 |
| 1 | Qik 2s9v1 | SIL-12 | P4 |
| 1 | R | SM0603 | R16 |
| 1 | RESET | SW_PUSH_SMALL | SW2 |
| 1 | ROT_ENC | PIN_ARRAY_3X1 | K1 |
| 1 | SELECT | SW_PUSH_SMALL | SW1 |
Questions
What parts does the Squarewave use?
72 parts, built around the ATMEGA328P-AU, ITR8307 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 Squarewave KiCad files?
From the dunz0r/Circuits repository on GitHub, at the commit this page was made from: the board is Squarewave/Squarewave.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Squarewave design in my own project?
Its repository states no licence, so its author keeps all rights: ask dunz0r before reusing the design.
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