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Category Archives: Anything
ATMEGA USB 005
There are lots of chips with serial control. Some of them use Philips I2C buss. There two data lines and two power lines to transmit all data. There DTMF encoders, switches, Dolby surround audio processors, multiplexers and many many other … Continue reading
ATMEGA USB 004
There is ADC in ATMEGA16 with 8 multiplexed inputs. This analog to digital converter have several interesting options. Here is abstract from datasheet: • 10-bit Resolution • 0.5 LSB Integral Non-linearity • ±2 LSB Absolute Accuracy • 13 – 260 … Continue reading
ATMEGA USB 003
Blinking LED is not very cool. And not very informative. But we can use LCD module. It is very cheap and available device. There are many types of LCD modules in the world. I am using most popular- HD44780 controller … Continue reading
ATMEGA USB 002
Now we need to test PCB and MCU. To test this hardware we need to run some program. And to build program we need tools. I downloaded and used free software from internet. WinAVR package: http://winavr.sourceforge.net/. Also, I am using … Continue reading
ATMEGA USB 001
In older posts I mentioned, that I resoldered several ATMEL ATMEGA16 processors. So, I decided to build something usefull using this MCU. As this controller has more ROM and RAM, I decided to use only high level programming language- C. … Continue reading
DVB-T
Step by step, digital television is conquering our country. From this spring, DVB-T (digital video broadcasting, terrestrial) is broad-casted in my home city. In our country someone decided to use MPEG4, h.264 video compression. All cheap available DVB-T receivers didn’t … Continue reading
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Cleaning HP970cxi printer
In Lithuanian blog there is detailed instruction how to disassemble and clean this good ink jet printer. As I am too lazy to translate all these instructions, I only posted few images. I don’t know, if the readers of my … Continue reading
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Brain Cooler 2
First version of brain cooler failed. So I returned to my old idea. The first thought was to build ceiling made from small computer fans. Second idea was to build suspension ceiling segment from small computer fans. The third idea … Continue reading
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Brain cooler
It was hot. And very damp air. The windows was open, 00:15AM, but the computer inside room raised temperature to 26°C and humidity is 90%. I needed brain cooler. Some time ago, I wrote that in eBay I bought some … Continue reading
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Transformer TC-180-2
I need some transformer for one experiment (I’ll post it in near future). So I dig my trash pile and found Soviet transformer with double windings. The idea was to run the transformer with double overload. The transformer I selected … Continue reading
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