If you are older than 28 years old, you might already know what a COM port looks like. Yes, COM port stands for Communication port. It was used widely to connect external device to the computer in the old days around 2005, such as: modem, mouse, even printer or transfer data between 2 PC. Yes, COM port was understood as serial port.
Sometime, you need a small circuit to flash some LEDs or do some simple task, say, power on delay function for your DIY amplifier, power on reminder for your soldering station (beep every 3 mins) - which I forgot to turn off all the time… probably, an Attiny13 is just what you need.
It is sometime called game show buzzer lockout system, but I thought many people confuse with the name so I changed it.
If you’ve watched some game shows like Family Feud, you probably know what a game show buzzer is. And yes, it is a set of buzzers that once a button is pressed, the other button is deactivated to indicate the player who takes answer fastest. It usually is 2 or 3 players at a time on TV. That is easy. But what if you need a buzzer set for 10+ players or teams at the same time. Well, not easy anymore.
Just bought this laptop Asus x302l about 3 weeks ago. After a week, I found out that it (
is) was impossible to do middle mouse button. There is no such an option for middle mouse button in ASUS Smart Gesture, or I should call ASUS not-so-Smart Gesture. In this entry, I will call it “Asus gesture”.
Tried everything I could find on the internet, also hit the support team of ASUS as well, none came with success. I was so disappointed, and still do. So, do I have carry an extra mouse on the go like forever?
Just bought one yesterday from local store for AU$ 799 and it surprised me when it comes with 128GB SSD instead. Nice!
Most cheap PL2303HX USB to UART adaptors from ebay usually don’t have DTR pin to upload sketch easier to Arduino Mini Pro.
This post will show you how to mod this little adaptor to play nice with arduino mini pro. It should take about 10 minutes and require good solder skill.
Turn out this can be a nice analog-clock on my desk to replace the widget analog-clock of windows 7.
Playing around with 2.8” TFT display with driver ILI9341 from ebay. This one has SPI connection and SD card reader built-in at the back of this TFT display. I choose the display without touch-screen because I don’t need it for my next project.
But it seems I always have trouble with things from ebay: this TFT display using driver ILI9341 that accept 3v3 signal and the module doesn’t come with a level conversion chip like this LCD Shield using driver 4535.
For the first time having experience with arduino and TFT screen, a TFT display shield should be better than a breakout TFT display, because a shield is something that made for plug-n-play, like a usb thing, just plug it in the computer and it works right away.
That what I thought when I bought this shield.
But I was wrong.
It is the cheap TFT display you will get from ebay. There are serveral models using different drivers - mine uses LGDP4535 - that looks like the picture above.
Bought a D5100 about a year ago. It is an entry level / consumer level DSLR and yet it is a powerful one. The wonderful thing of SLR / DSLR is that you can change the lens. I like Nikon for it’s compatible of wide range of lens including very old manual lens from the 80’s with superb image quality for very low price.
By the time I bought my D5100, its about 14.000.000vnd ~ US$ 700 come with 18-55mm VR kit Lens. Good enough for a newb like me.