Chinwah

Member Since: August 17, 2009

Country: Taiwan

Profile

Bio

Very senior Electronics/Software engineer

Role

Semi retired

Spoken Languages

English Chinese

Programming Languages

Assembly, Pascal, C, C++, C#

Universities

University of Texas

Expertise

Automation, robotics, military weapon systems

Interests

Robotics

Websites

www.chinwah-engineering.com

  • Product GPS-10890 | about 2 years ago

    It appears that the connector is a HiRose FH34SRJ-6S-0.5SH(50) which is a “FPC” connector. See data sheet section 1.5 and 1.7.
    http://www.hirose.co.jp/cataloge_hp/e58012017.pdf
    A breakout board would require a “FPC” cable or require a replacement of the connector which might be possible with steady hands.
    McZ

  • Product COM-10411 | about 3 years ago

    Needs to have a blue LED.

  • News - Yay! Let's Play Copycat | about 3 years ago

    If someone here in Taiwan does that to SparkFun drop me a note and I will send some friends to visit them…

  • News - The FT232R Revealed! | about 4 years ago

    I agree. FTDI dropped the ball on the VNC1 chip. I have tried to use them for several projects and have found it to be difficult to use. The RD signal is inverted from the WE signal which is odd. Same on the FT232/245. I have used their canned software for USB master/slave projects. The little VDrive2 module is kind of interesting but doesnt have any IO other than serial/SPI.
    There is a VNC2 chip coming out and they have software tools already but no hardware. “?”

  • News - The FT232R Revealed! | about 4 years ago

    “So, does that mean that the "FT232R” can emulate a “FT245RL”? Or is USB to parallel different from USB to FIFO?“
    No the FT232R and FT245R are different in their default modes. In the bitbang mode the FT232R does have RD and WR signals but does not have the RXF# and TXE# handshake signals like FT245R. I tried emmulating them but if you set the data on the D0-7 signals and then switch over to the Cbus it resets the data signals.
    The discussion in the USB parallel interface discusses this issue.

  • News - Retail Packaging Has Arri… | about 4 years ago

    I personally dont like the plastic packaging. It takes scissors or tin snips to open them and sharp edges are a pain. Unfortunately there is no other way to package it in a retail environment.
    I love the red boxes, great for storage. I have all the ones I got from you. You might have a checkout category so we can select what size we want to complete our collections. :-)
    Your local distributor in Taipei does not carry very much of your product line.

  • News - Dear ON Semiconductor | about 4 years ago

    Part II
    As far as the marking on the die, I dont think that those are date codes. They are identifiers for the die. Some companies sell raw die and they publish the die code in their data sheets. Date codes are for the customer. The manufactures track by lot numbers. Some more expensive dies have lot numbers laser etched or serial numbers programmed at test. On the factory floor they are very careful to keep the lot traveler with the parts. If they get mixed up (unlikely) they have test programs to determine what the part is.
    I live in Taiwan so I dont want to say that anyone would do that here. :-)

  • News - Dear ON Semiconductor | about 4 years ago

    Part I
    I worked for TI as an automation engineer lets just say for a very long time.
    The parts are laser symbolized. This is an expensive large machine. A mold press and tooling for packages is also a large and expensive machine. Not something that a garage shop would have.
    These were probably done at a manufacture of semiconductors. If I remember correctly the mold mark showed Taiwan. There is a ON Semiconductor site in Taiwan. The lead form looks good so they were not just dumped in the trash. Also you cannot resymbolize laser markings. The plastic is quite hard so it takes a lot of power to etch the plastic. Someone could have acquired the parts before they were symbolized and had them symbolized in China. If I remember correctly the symbolization was done after test at TI and I would assume other manufactures do the same to not waste time symbolizing bad parts.

  • News - Franken-Chumby Parts | about 4 years ago

    Probably everything you need to know about the hardware and software is available at the Chumby Wiki.
    http://wiki.chumby.com/mediawiki/index.php/Main_Page

  • Product COM-09689 | about 4 years ago

    Perfect timing guys. I Heart Robotics has an article on building your own clean room and one of the things they were missing was a dust particle detector.
    http://www.iheartrobotics.com/2010/02/this-new-lab-diy-cleanroom.html (credit to http://www.hackaday.com)

No public wish lists :(