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2 layers52.4 × 78.4 mmOptoCounter, the printed circuit board in 3D

Электронный счетчик импульсов

Size
52.4 × 78.4 mm
Copper layers
2
Thickness
1.6 mm
Parts
51
Nets
55
Pads
177
Tracks, vias
341, 3
Pours
2
Routed
Yes
KiCad
KiCad 4
Created
24 Jun 2018
Updated
16 Sep 2020

Overview

OptoCounter is an open-source printed circuit board by synthetic65535, from the synthetic65535/OptoCounter repository on GitHub. It is a 2-layer board of 52.4 × 78.4 mm with 51 parts on 55 nets, routed with 341 tracks and 3 vias.

It is built around the ATMEGA8A-PU, LM358N and BC56-12SRWA, with the 1N4734A among its other parts. Its parts include 27 resistors, 8 capacitors, 4 diodes, 3 ICs and 3 transistors. It belongs with the AVR (ATmega, ATtiny) boards of this library.

Main components

4

README

readme.md

OptoCounter

Электронный счетчик импульсов.

  • Используемый микроконтроллер: atmega8
  • Среда разработки: KiCad
  • Прошивка для микроконтроллера: Здесь

Отличительные особенности счетчика:

  • Возможность использовать самые разнообразные датчики, изменяющие во время работы свою проводимость: фоторезисторы, фототранзисторы, микрофоны...
  • Аппаратный фильтр, заглушающий помехи от 50 герц и выше
  • Аппаратный дифференциатор + компаратор с гистерезисом. При необходимости можно сделать подстройку схемы под конкретный датчик не изменяя прошивку микроконтроллера. Микроконтроллер не занимается фильтрацией сигнала, ему на вход подаются уже готовые прямоугольные импульсы, которые он считает.
  • Отсутствие SMD деталей
  • Питание от USB

Device Photo

Parts

51
QtyValueFootprintReferences
9470MyFootprints:RESR1, R15, R16, R17, R18, R19, R20, R21, R22
71kMyFootprints:RESR2, R11, R14, R24, R26, R27, R28
610kMyFootprints:RESR3, R5, R7, R9, R12, R13
30.1uFMyFootprints:CAPC2, C3, C4
3Q_NPN_BCEMyFootprints:Q_BCEQ1, Q2, Q3
222kMyFootprints:RESR4, R8
222pFMyFootprints:CAPC5, C6
2330uFCapacitors_THT:CP_Radial_D6.3mm_P2.50mmC7, C8
2TVSMyFootprints:DO-41D1, D2
110MyFootprints:RESR23
1100kMyFootprints:RESR10
11MMyFootprints:RESR6
11N4007MyFootprints:DO-41D3
11N4734AMyFootprints:DO-41D4
14.7-10uFMyFootprints:CAPC1
18MhzCrystals:Crystal_HC49-4H_VerticalY1
1ATMEGA8A-PUMyFootprints:TRS-28_ConnflyU2
1BC56-12SRWAMyFootprints:BC56-12SRWAU3
1LM358NHousings_DIP:DIP-8_W7.62mm_SocketU1
1MSW-11MyFootprints:SM5-00N-115SW1
1PLD-6MyFootprints:AVR_ISPJ2
1RS-212MyFootprints:RS212J1
1USBB-1JMyFootprints:USB_BJ3

The 50 most common of 51 parts.

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Questions

How big is the OptoCounter PCB?

It measures 52.4 × 78.4 mm and has 2 copper layers, 1.6 mm thick.

What parts does the OptoCounter use?

51 parts, built around the ATMEGA8A-PU, LM358N, BC56-12SRWA and 1N4734A. 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 OptoCounter KiCad files?

From the synthetic65535/OptoCounter repository on GitHub, at the commit this page was made from: the board is OptoCounter.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the OptoCounter design in my own project?

Its repository states no licence, so its author keeps all rights: ask synthetic65535 before reusing the design.