Presentation of my past work and projects for IJS (Institut Jozef Stefan).

1. Blaž Remškar
Presentation of my past work

2. Blaž Remškar Electronics
My first electronic/embedded projects
• ATMEL AVR chips were my first introduction to the world of
microcontrollers.
• Code for some of my first projects was written in Assembler
language.
• Later I started writing code in C language because my project
started to be more complicated.
• Almost all electronic was made with protoboards or acrylic
boards with drilled holes.
POV persistence of visionMy circuit

3. Blaž Remškar Electronics
Some of my first projects
• Programming ATMEL chips with
PonyProg serial device programmer.
• Clap detectors for detecting one or
several claps with relay output for
triggering lights.
• Heart shaped music detector for my
girlfriend birthday present.
• Light detector for controlling small
solar panel.
AVR programmer
I've done all those projects alone from scratch. More complicated
project was several clap detector, because I needed to make correct
time measurements between the claps and the clap itself. Heart music
Detector was soldered on plexiglass which was also very hard to do. LED heart

4. Blaž Remškar Electronics
Some of my robotic projects
This robot is able to follow black or with
line. The algoritem is quite simple, all
you need to do is just sense the
reflection of two infrared LED
transmitters and decide how to turn.
Line following robot
I made this robot just to impress
people. When it runs it looks like alive
creature, because it has separated
micrcontroller just for turning head and
it uses only one ultrasound sensor.
Turning head caterpillar
The robot was made for the obstacle
detection and avoidance. I decided to
make it more interesting. I made simple
learning algoritem with weights so the
robot can learn himself how to avoid
obstacles in real enviroment.
Artificial intelligence
Only problem with this robots is power
supply. The sensors were very simple
wire switches and the microcontroller
was directly connected to motors. I got
the motors from the cell phone vibrator
and they had no tyres.
Micro robots
• I started creating robots just for fun then it turned out that I
really learned a lot about electronics and programming.
• The robots that I created were only toys and they weren't very
useful in real life applications.

5. Blaž Remškar Electronics
Project for Machine Vision Laboratory FE
• SensiNode wirelles nodes were the base of this project.
• I also needed some embedded cameras in this case
CMUcams for face detection.
• The goal of this project was intergration between SensiNode
and CMUcam not so much data statistic from captured data.
The idea was to detect human faces with cameras and then measuring the time and
the number of the faces in front of the camera. The data can then be transmitted from
node to node and then through router to the software where the data can be further
analyzed for the needs of marketing.
So I needed to make some protocol between cameras and the wireless nodes. It was
a simple SPI interface on both sides for sending information about the time and
number of faces from cameras and acknowledge info from wireless nodes.
Wireless network of cameras for determing public
interests

6. Blaž Remškar Electronics
Basic idea of this sensor network
Send the number of
detected faces and
the time based on
changed number of
faces to the node.
Then wait for
acknowledge from
node.
Cameras
Establish wireless
Mash network
between the nodes
and start sending
the data from the
camera to router.
Nodes
Made some
statistics based on
node number, time
of looking and
number of faces.
This can be further
presented for the
marketing needs.
Statistic

7. Blaž Remškar Electronics
Components of my system intergration
The CMUcam is a low-cost,
low-power sensor for mobile
robots. I used the Viola-Jones
sample project that comes
with the CMUcam. It is an
example of a lightweight face
detector. The algorithm is
based on the face detection
by P. Viola and M. Jones.
It contains NanoStack,
NanoRouter and NanoService
solution and they are an ideal
building blocks for the Internet
of Things based on IPv6
(6LoWPAN). I used the basic
mesh networking that comes
with the stack, and it cover
multiple hops.
Is a network analyzer tool for
visualizing network activity,
node data statistics and
routing information of sensor
network. I modified this SW so
that message log fits my data
requirements. Further
statistics processing can be
made with Matlab.
CMUcam Sensinode NodeView

8. Blaž Remškar Electronics
My work at Spica International
I started working in Spica back in 2009. My
primary tasks in HW development were writing
drivers and decoders for card readers and PCB
design.
•Now I still take part in Spica only as external
employee because most of the HW projects are
almost completed.
In addition to my main tasks which has been
focused on card readers decoders and drivers, I
also made several other HW and SW projects
including PCBs, desktop applications, smart
cards programming SW, some web related
things and automatic HW stress and smoke
tests. I also worked a lot on integration between
our controllers and a wide variety of fingerprint
sensors.
My first work place in Spica
My second fingerprint sensor integration
and first installation in Spica

9. Blaž Remškar Electronics
Some of the projects in Spica
Card readers input circuit for our I/O
unit with only 5 pins for 4 readers
and 4 external push buttons.
A physical test unit that contains
simulation of card readers and other
sensors our controllers protocol and
protocol for my Python scripts.
We implemented Z1B in our
cloud application.
Our device Zone Button.
There are three different
devices in one hardware.
TOWER (Linux) and I/O unit
(MQX RTOS) integration.
I also wrote some drivers
for dev board TOWER.

10. Blaž Remškar Electronics
I/O unit PCB development for Spica
• Spica needed to develop a simple
door and sensors I/O expansion unit
for our smart controllers and Zone
Button devices. The device currently
carries the name Zone Door.
• My task was to develop the circuit
board with minimal resources. It
contains a power supply inputs for
readers, sensors, and two relay
outputs and it is based on
MCF51JM128 which runs MQX
RTOS.
PCB view in Eagle 3D
In addition to electronics that I developed for this I/O
unit, I also developed all the drivers for readers,
sensors, relays and CAN communication. I also had
to find most of the components and housing.
PCB from manufacturer

11. Blaž Remškar Electronics
Some of my Web projects
My love for Dubstep music
led me to do a nice
graphical web page. In this
project I learned a lot about
HTML, CSS and GIMP. I
also used a nice beautiful
flash player and Javascript
slider for presenting the
newest YouTube Dubstep
music videos.
I wanted to
create mobile
social network
for meeting
people with
common
interests on bus
or train. Page
includes basic
login and
interests
tagging.
This was my first page in CMS,
more exactly Drupal. I also tried
Joomla, and now I see that
developing in CMSs is very easy
and you can also write your
modules in PHP and make
design changes in CSS, so you
can modify almost anything you
want. With this you can very
quickly develop a website based
on your needs.

12. Blaž Remškar Electronics
My future goals
• I am very interested in all things related to the Internet of
Things, wireless sensor networks and embedded electronics
in general.
• I would also take some new SW and Web projects just to
expand my horizon further, but my primary love will always be
embedded electronics.