The prototype is finish!

The new ILC1-1/8 control board works fine! Great!
I describe the circuit later …



The tube: ILC 1-1/8 – Updated!


Here is a detailed description of the tube.
The Filament voltage is 3.15V (150 mA). You have pins 1,2 (+) and 14,15 (-) to use. It’s not necessary to use both couple, 1 or 2 and 14 or 15 are enough.
(It’s also possible to use AC for the filament.)

The next is our Grid voltage, +20V (45mA .. 50mA). The Grid are the pins 4, 8 and 13 (one of these).

The other pins are the segments. To use with +20V too. Each segment needs 3mA .. 4mA current.

It’s possible to reduce the Grid and segment voltage down to 12V. The segments are still on, but not so bright. For test it’s great!

An example:

Programming my own Atmega168

The IV-18 Project is actually finished. The only thing that is not so nice, I use an Arduino Nano for control. For a long time I bought some Atmega168 microcontroller to programming this and to use it instead of the Arduino Nano.
Yesterday it was now ready, I dealt with the programming of Atmega168 via Arduino UNO. It was tearing the hair. I found a lot of pages in the internet (sometimes I have more than 20 pages open at the same time). But I got still errors.
In the evening it was time to say: Goal reached!
Now, I’m able to programming my own Atmega168 microcontroller and use it in my circuits.
In the next days I will share my knowledge and I will create a new page with all the necessary informations.


In this video I show you the possibility to control an 8 x 7 Segment Display with the Arduino. You need only three wires to control the display.
In this demonstration I use a simple source code to generate a random number and display this number at a random digit.

Photographing water drops using Raspberry Pi

I finished the next part of another project: water drops photography.

There are a lot of amazing photos about this theme. I decided to try this self. I started with a simple equipment. First with an injection set, a flash light and a lot of time! The result was great! The next step was to buy a light barrier to trigger the camera and a solenoid valve to produce the water drops. The solenoid valve is already controled by the Raspberry Pi.
Now, I removed the light barrier and trigger the camera with the Raspberry Pi too.
This is the current state.

In the next days I will show you the circuit and the python sketch.Image

A bad day yesterday!
I tried to optimize the “The little One” code, but it was not successfully. I got a timing problem. To use the interrupt timer2 for the ultra sonic, the frequence is to high, also with a prescaler of 1024. But timer 1 is current in use …