Son vaxtlar Türk seriyallarından geri qalmayan Azərbaycan seriyalları: Günəşim ol, Cehizsiz Gəlinlər, Vicdan Haqqı və s.
Baxdıqca baxılan seriyalları izləmək üçün TV yayımından dərhal sonra filma.info və bolumizle.biz saytını ziyarət edin.

Diriliş Ertuğrul dizi anlatımı

Diriliş Ertuğrul dizisi çox sevilen ve çok izlenen tarihi dizilerden oldu Azerbaycanda ve tüm Türk soylu halklar tarafından izlenmekte. Diriliş Ertuğrul dizi izle: http://filma.info

Seriyal və Azeri, Türkçe Dublaj filmler.

Hər gün güncəl olaraq yüklənən Türkçə və Azəricə Dublaj olunmuş HD keyfiyyətində filmlər izləyin! həmçinin saytımızda hər gün Azərbaycan telekanallarında yayımlanan Qız Atası, Bacanaqlar, Qardaşlar kimi komediya filmlərini -də izləyə bilərsiniz.

Türk seriyallarından olan biri-birinə rəqib iki dizi "Kurtlar Vadisi Pusu və Eşkiya Dunyaya Hükümdar Olmaz" dizileri -də tv yayımından dərhal sonra yeni və son bölümü ilə (HD) olaraq sizlərlə. Bolca film və Serial (dizi) keyfi üçün http://bolumizle.biz saytını ziyarət edin.

Lamming SYW Range - further discoveries

I have recently acquired some largish reinforcements of Lamming SYW foot figures. Nothing new here but there were a snall number of cavalry figures. There are dragoons with two horse varieties - these look similar to those already posted earleir, I have only compared the photos so far rather than the figures themselves; a cuirassier who seems different to the Prussian figure I have seen before; and a hussar variant with busby rather than Mirliton.

I am mainly concentrating on Medievals at the moment but once I start painting up the SYW foot I will have a go at constructing some kind of listing of all the Lamming SYW figures of which I am aware.

Electronic scale .. just because..

Bought a bunch of stuff on Ebay, here among: HX711 strain gauge A/D converters, 40Kg. load cells, 2,8" TFT touch display Arduino shields.

These items were all bought for different projects but screamed to be put together into a Arduino powered scale:

All components were just mounted on pieces of CNC cut plywood:

With this set-up I will be experimenting with different weight related issues such as:
counting items, mediated chemical recepies, food monitoring, paint usage ...

More to come on this.


Arduino source (as is!) for a couple of experiments

Induction heater

At FabLabRUC we have been experimenting with differnt kinds of metal casting. One of the methods is "lost PLA casting" where a 3D printed PLA model is covered with plaster and made to melt away when molten metal is poured over it.

Problem is that the metal (aluminium in this case) cools off too quickly when it contacts the plastic.

I wanted to find a method to keep the metal molten while inside the mold.

One solution seemed to be using induction heating.

A lot of people on the Internet seemed to have success with a simple induction heater circuit so decided to build one inspired by these:

A video (Danish) of an early prototype from FabLabRUC:

More about this heater and the casting process later..

Our stab at a line follower robot

Found this old post that I somehow forgot to publish:

I and a couple of people from Illutron are running three workshops about robotics. One of the projects we are presenting is a line follower robot. We have chosen this since making a robot capable of following a black line on a piece of paper presents a number of good hardware and software challenges for the worksop participants.
This is our first version the hardware.

The robot is laser cut from 4mm HDF board and consists of a flat chassis driven by two hacked servos. A top structure is added to carry batteries and various sensors.

A curved structure at the back acts as the 3'rd wheel.

Good traction is achieved by gluing sand paper to the wheels.

The sensor is made from layered HDF board.

Minimalistic APRS transponder beaten by the internet

When starting the minimalistic APRS transponder project the goal was to make a semi-disposable APRS transponder costing less than 28 Euro (~35USD).
After spending many nights designing a VHF transmitter from cheap easily obtainable parts the price landed around (for the transmitter) 13.5 Euro (16.75 USD). This was not including about 1 hour of assembly time. All seem good but then I found this module on the Internet for 11.12 Euro, including shipping. Not only was it cheaper than I could ever build something myself but it was also a fully programmable VHF tranceiver and had 1W output.
I have now decided to base my APRS tranceiver around this module and use the left over money(!) on a more powerful processor.

Here is a picture of my initial prototype. Schematic and source follow shortly.

APRS transponder now with 1W output

Did some more work on the minimalistic APRS transponder. Made a test circuit board that allowed for adjusting component values. It now output 1Watt at 7.2V

UPDATE: Some pins have changed so this schematic is NOT compatible with the code posted earlier
Updated code HERE
Added a voltage regulator for 2LiPo cell operation.
Here is a quick video of my test setup transmitting 1W.

Tone/DTMF detector library for Arduino

Was playing with some cheap radios and decided that the keypad DTMF tones could be used for remote control.
I had some old source that detected touch tones using a AVR microcontroller and decided to convert it for Arduino.

This resulted in a library that detect audio tones played into any Arduino pin.
The audio is first clipped to a 1-bit signal (played loudly into a digital pin) then sampled at 10kHz.
256 1-bit samples (25.6mS) can then be analyzed for the content of one or more audio tones.
The analyzer uses a crude 1-bit DFT but works surprisingly well at detecting multible tones such as DTMF or guitar plucks.
The result can be presented as either a DTMF symbol or approximate signal strength for any frequency analyzed (up to 5kHz).

Here is the library for now (will move to github).

Magnetic levitation

Some students wanted to build a toothbrush holder that floated a toothbrush in mid air to avoid contamination.
I build a prototype to see if it was possible to implement the control system in software.

This project allow a small permanent magnet to be levitated by a electro magnet.
Since static passive magnetic levitation is not possible a HALL effect sensor
 is used to constantly regulate the magnetic field.
To achieve stability a software based PID controller is used.

5 potentiometers is used to control the PID parameters.
This is the Arduino code for the project

Minimalistic APRS transponder

After working on a High altitude Balloon project I got interested in APRS.
APRS is basically a radio amateur driven network that among other things lets you broadcast your position worldwide on VHF radio.
For out project we used this APRS transponder to keep track of the balloon.
Mostly for the challenge I decided to build a really small and inexpensive APRS tracker you wouldn't be too sad to loose.

UPDATE: The example code uses a ATTINY85. Change to ATTINY45 in AtmelStudio if using this chip.

I used a FS6377 integrated clock synthesizer as the VHF transmitter. This chip is I2C programmable and is able to generate 144.8MHz (or 144.39MHz for US) from a 20MHz crystal.
The FS6377 does not have a modulation input but I was able to modulate the crystal oscillator using a simple variable capacitance diode.
I chose the ATTINY85 microcontroller form Atmel because it is cheap and available in a really small package.
The BELL202 modem signal needed for APRS is synthesized inside the ATTINY85 microcontroller and output as a PWM signal.
The frequency of the modem tones need to be very precise and since the internal clock is not very accurate I chose to generate a 10MHz clock frequency externally. It is possible to tune the internal clock in software to gain an extra I/O pin but I didn't need it here.

The transponder really show potential to miniaturized. The transmit power is around 30mW enough for long range if transmitting in line of sight.

The project is heavily inspired by the Trackduino project.

Here is the source code for the project as an AtmelStudo project

UPDATE: Fuses are EXTENDED 0xFF : HIGH 0xDF : LOW 0xC0

UPDATE:
Use this program to change for other frequencies:
http://www.onsemi.com/pub/Collateral/FS6377_REV3.1.0.ZIP
This is the current configuration. Mind that the registers are in reverse order from the order they are sent in transmitter.cpp in the project.

A bit more wheelchair stuff

Figured out some more details about the actuator data format.
Also a short video from FabLabRuc of me driving the wheelchair using a HCD controller.

Hacking electric wheelchair drive

While building some robots for a museum we came up with the idea of using an electric wheelchair as the base for the robot.
Not wanting to replace the electronics we gave it a shot to try to use the existing motor driver and control it from an Arduino. On inspection it turned out to be a very common Penny and Giles Pilot plus drive.

(Photo wheelchairdriver.com)

Very little technical information is available about the interface between the joystick- and motor unit of this system. So we started reverse engineering. Here is what we have found so far.

By opening up the joystick and probing connections inside we found that the joystick movement are communicated as serial data @19200BAUD, 8 databits and even parity. Apart from the driving data the joystick unit also emit an additional, and completely different, data stream for controlling various lights and actuators on the chair.

The physical connection is using a propitiatory 6 way connector.

I turns out that the joystick sends drive data packets with checksum roughly every 10mS. Immediately after the data line changes direction and the motor controller returns a packet of data, again with checksum.
Simultaneously but not in sync another data signal is sent to control lights and actuators.

The data format seem to be completely non-standard but relatively simple to encode.

Probably for safety reasons the system does not tolerate any signals being missing or corrupted without shutting down so a fair bit of probing and fiddling went in to eliminating the joystick and replacing it with an arduino.
Here is a rough cut first Arduino sketch that allowed us to drive the wheelchair motors actuators and lights.
Quick shaky video of it running.

We plan to turn out a easy-to-use Arduino library for controlling the PG Pilot Plus soon.

The_synth Arduino library got an upgrade

A while ago I released a Arduino synthesizer library. A new and improved version is now available github:

https://github.com/dzlonline/the_synth

I was asked to play a small concert at my friends PhD defense using an Arduino running this library.

Listen to the result here:

https://dl.dropboxusercontent.com/u/2248531/the_synth_concert.mp3

The music was sequenced using Ableton Live and sent to the Arduino via. MIDI @ 31250 BAUD serial data. The output from the Arduino was a 8 bit PWM signal that was subsequently lowpass filtered using a simple LC filter.
Part of the low pass filtered audio signal was sent back through a echo effect processor (inside Ableton) to add a bit of flavor and make it tolerable to regular people :)

Lamming Guard Chasseurs a Pied

Lamming didn't list any Chasseurs so these will be Grenadiers with a slightly different paint job. The pioneer/sapper is an S Range figure.

These figures came together with the SEGOM Dutch Grenadiers which can be seen here.

Easy to use Arduino wireless library

When working on the HCD project it came apparent that the small radio chips used could be used for general purpose wireless communication.
The BK2421 based radio turns out to be compatible with a lot of other devices like the RFM70  or the nRF24L01 from Sparkfun.
I have made a simple to use library for Arduino that uses the HCD or similar radio for simple character driven communication.
In addition to communicating between Arduinos it can be used to connect to the HCD or similar handsets so they may be used for controlling your own stuff.
See the library examples for basic functionality.

Check out the Arduino library.

More Lamming SYW

I recently bought a mixed ebay lot of some very heavily playworn S Range Jacobite Rebellion figures and some very nasty recasts of Lamming SYW figures.

I'm not complaining about this, as it was clear from the photograph, and they didn't cost much. but they did help with identification. The lot contained one Lamming SYW figure I had never seen before and another I have had examples of for a while, but hadn't realised was Lamming.

This means we can add to the Lamming SYW listing:

Highland officer
Highland grenadier
Highlander (I don't know enough about the period, but perhaps the shield slung on his back indicates Jacobite rather than Government Highlander?)

Minifigs 20mm Colonial Cavalry

Another ebay find has been these Miniature Figurines 20mm colonial cavalry. There are already some photos of these two figures elsewhere on this blog - BCC 3 17th Lancer charging and CC 1 Bengal Lancer - but as these ones are painted in a pleasing glossy style and the Bengal Lancers have their original lances I thought it was worth putting them up here (and adding them to the previous posts).

More Kirk cavalry

Another recent purchase from ebay. They are not pretty but reasonably effective. Hussars and Cuirassiers.