• Rubber band ball

    03/13/2016 at 20:49 0 comments

    or the longest time, I simply hang those wide rubber bands from my grocery in the kitchen. From time to time, I use a couple of them on my pair of pier to hold things together for gluing.

    The collection is now big enough to start making my own rubber band ball.

    1. Start off with a solid core
    2. Now time to turn it into a sphere
    3. At this point, you can make it grow by simply adding more rubber bands.
    4. ???
    5. Profit!

  • Hacker kitchen aid

    03/10/2016 at 22:15 1 comment

    I bought a cheap pasta maker on Amazon just to qualify for free shipping for something else. The clamp for the pasta maker was unfortunately on the same side as the crank which kind of put my hand above the stove. The clamp wasn't long enough for the front side of the bench.

    So I do what any hacker would do under the situation.

    Bon Appétit!

  • Patch job

    11/11/2015 at 17:13 4 comments

    When it comes to procrastination, I lost to the repair works at my apartment. I had to patch up a couple of oversized holes left behind under the kitchen sink before I moved in. The new neighbor on the opposite side of the wall is a chain smoker. :( I have asked them to come in, but it is like supervising socially active teenage and the work quality wasn't up to par.

    The proper way of doing this is to use dry wall mesh to act as scaffolding before applying drywall filler compound etc. I am not getting paid for this, so I am using whatever I have on hand - cardboard from soda cracker boxes and hot glue that I rarely use.

    I measure the diameter out the large drain pipe with my trusty caliper. I found the old compass I had from high school for the circle! I cut out a slit and the circle with a pair of scissors. The cut out fits the drain pipe perfectly. I used tons of hot glue to glue the patch onto the wall board. I glue over a second piece rotated by 180 degrees over the top to add some extra strength.

    For the other hole, I cut out an elongated slot. The two offset cardboards allow me to make some adjustments on the width/length aperture. I glooped the whole thing with ample of hot glue to fill the area between the two water pipes.

    I went over the patches with my hot air tool to smooth over the glue and make sure that the glue are melted completely and soak onto the surface. It is not a pretty job, but is better than the unfinished repair work or the attempted Saran wrap by the previous tenant.


    I ordered some STM32F030F4 parts from China. They are 16kB FLASH with 4kB SRAM 48MHz Cortex M0 in a TSSOP package for $0.60 US a piece at QTY 10. There are the usual 12-bit ADC, SPI, I2C, USART, timers and a 5 channel DMA!!! At that kind of price point, I wouldn't bother with the regular 8-bit chips.
    Links:
    http://eleceng.dit.ie/frank/arm/STM32F030ISP/index.html
    https://hackaday.io/project/4277-stm32f030f4p6-breakout-board

    Also ordered some of the Buck Converter modules. All you need is a couple of bulk input and output caps. Hopefully these should arrive before Xmas.

    Canada Post and the Canada Custom are getting slower these days. My ten nRF24 clone modules arrived today. With the SFM32F030, these would make some low cost decent LoT modules.