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What is an AOI equipment

Question - A contract manufacturer today gave me the quote for some rework on PCB. He says that he will charge $150 for the AOI equipment programming. What the hell is AOI Equipment ?

Answer – First – your contract manufacturer may be charging less or way more, depending upon the amount of the programming he needs to do. If your rework required like 100 components, then $150 is cheaper. If your rework is for just 5 components, the $150 is probably way to high.

Now back to your question – the AOI stands for Automated optical inspection and is almost invariably done in automated complex PCB assembly manufacturing. In AOI, a picture of a working board is taken at each component at a specified coordinate. This is matched against the board under test. If the match shows a “significant difference”, the software flags an error. A manual intervention is required to check the cause of the difference.

By admin on October 13, 2011 | Uncategorized | 2 comments

Fire FTP missing in the Firefox 4 Tools Menu – Issue

If you have upgraded to the recent Firefox, and you plan to use fireftp, you will notice that the Fireftp is gone. You are not alone to find this issue.

The Fireftp used to be in the tools menu. This has been shifted one notch down and can now be accessed using Tools -> Web Developer -> Fire ftp.

Take a look at the following figure.

Hope that it will help any one looking for fire ftp when they upgrade firefox.

An updated from Starredreviews -

- The French Starred reviews has been moved to French Starred Reviews.

By admin on | Uncategorized | A comment?

Serial Port /dev/ttyS1 does not work in MX51

Question - I tried picocom using the command picocom -b 9600 /dev/ttyS1 in the freescale MX51 EVK board but it does not seem to work

Answer- You may like to try this command

picocom -b 9600 /dev/ttymxc1

Notice ttymxc1 in place of /dev/ttyS1

By admin on October 12, 2011 | Uncategorized | A comment?

How to get out of picocom in Linux Android

Question – I am using Picocom for serial port communication. I am able to send characters. My question is what is the command to get out of the picocom once you are into it ? I see the escape secquence C-a but I don’t get it.

Here is the command I used to get into it

picocom -b 9600 /dev/ttymxc1

Answer ?

You need to press Control a follow by Control x.

Notice that the terminal say C-a which means Control a and not the Character C followed by a

By admin on | Uncategorized | A comment?

Component Video Output on freescale i.MX51

The component video is connected directly to i.MX51 processor. If you want to test the component video output on your Android based platform, you can use the following command.

Once the system boots, press control-C to stop booting. Now give the following command at U-boot

>setenv bootargs_base setenv bootargs console=ttymxc0,115200 di1_primary gpu_nommu, gpu_memory=32M video=mxcdi1fb:YUV444,TV-720P60 dmfc=3 tve

Now boot the system by giving boot command

> boot

When the system fully boots up to android , use the following command to blank or display the content at LCD

Android

#echo 1 >/sys/class/graphics/fb1/blank
#echo 0 >/sys/class/graphics/fb0/blank

By admin on October 11, 2011 | Uncategorized | 2 comments