LED Indicator on 3v3 SPI Bus

I have a 3v3 SPI bus with a SDcard on it. I would like to know visually when data is being written to the card. Are there any potential problems with adding a small (1206) SMD LED in parallel as an indicator?

Replay

the problems about your idea:

  • a SPI bus runs fast, so if you connect a LED to the data signals or chip select you will not see anything .. its to fast for your eye.
  • the led need some current, the spi pins have to drive the current for it.

a solution could be to use the chip select signal with a transistor to trigger a pulse element with drive a led for a short time.

Category: led Time: 2016-07-28 Views: 1
Tags: led spi

Related post

iOS development

Android development

Python development

JAVA development

Development language

PHP development

Ruby development

search

Front-end development

Database

development tools

Open Platform

Javascript development

.NET development

cloud computing

server

Copyright (C) avrocks.com, All Rights Reserved.

processed in 0.214 (s). 12 q(s)