Internet of Things

Internet of Things #1
Basics
Sasnauskas, Swedbank
* Objectives
* Questions

You should do It !
Open Source
Lots of Colleagues already doin’ it
We Love engineering (+ Mechanical Sympathy)
Constant Trend
Physical IT
Inspire ones around
Home Security
Saves $$

Board Types
Raspberry Pi
Arduin
ESP8266
ATTiny85

Raspberry Pi (SBC)
Raspberry Pi (35 GBP)
Bananna Pi
Pi Zero W
Beagle Bone
Odroid C..
…

50% of RaspBerry price…
DC and SD card

I2C #!/usr/bin/env python from ina219
import INA219
SHUNT_OHMS = 0.1
MAX_EXPECTED_AMPS = 0.2
def read():
ina = INA219(SHUNT_OHMS, MAX_EXPECTED_AMPS)
ina.configure(ina.RANGE_16V)
print "Bus Voltage: %.3f V" % ina.voltage()
print "Bus Current: %.3f mA" % ina.current()
print "Power: %.3f mW" % ina.power()
print "Shunt voltage: %.3f mV" % ina.shunt_voltage()
if __name__ == "__main__":
read()

Arduino family
Uno
Nano
Mega
Pro
- 6-12V. And ways of powering

- Analog Read

- Strong Community

- Simple to make one Yourself

Arduino IDE
C
C++
Serial Monitor (Plotter)
Multi Boards
Libraries
Examples !

Button
Simple
Capacitive
Super Mario game on Youtube
By using Plums as Buttons

STM32 (Blue Pill)
AliExpress ~1.5 USD
10bit resolution AnalogRead()
Burn program via FTDI

Analog Read
Designed in Lithuania

ESP8266/ESP32/Wemos
ESP8266
ESP32
Node MCU
Wemos Electronics
Arduino IDE compatible
MicroPython
Can be a web server
Memory 1 - 8 - 16 MB
(board with WiFi)

ATTiny
555 timer
ATTIny 85
ATTiny 84A
85 specs:
Memory 8KB
8 MHz
Made by Atmel (same as Arduino)
Small and cheap
Uses less power
little memory
Not all Arduino functions would work
Can use software communication features even hardware don’t
exist

Ultrasonic Sensor
Distance via Ultra Sound
2-500 cm
4 pins

Relays
Just use Digital GPIO pin
And turn DigitalWrite LOW/HIGH

Can be used both: 
- Raspberry - HDMI
- Arduino - SPI
Displays: LCD
Please Use Quality ones 
like ofﬁcial 7’ screen

HAT
Low power Usage
Takes time to repaint
Displays: e-Paper

Vintage
https://www.instructables.com/id/Making-ApplePi-
Merging-a-Vintage-Macintosh-Plus-Wi/

My Dear Old Dell D820 Laptop…

Motors
DC
Stepper
Servo
Actuator
Solenoid

Voltage Regulation
Linnear 
(not effective)
Step-Down (Buck
converter)

Voltage Regulation 
ReUse old DC’s

MQTT
MQTT[1] (Message Queuing Telemetry Transport) is an ISO standard (ISO/IEC PRF 20922)[2]
publish-subscribe-based messaging protocol. It works on top of the TCP/IP protocol. It is
designed for connections with remote locations where a "small code footprint" is required or
the network bandwidth is limited. The publish-subscribe messaging pattern requires a
message broker.

Serial
UART (TTL)
RS 232
RS 485
Raspberry Pi - Arduino Uno

Serial
Python (Raspberry Pi)
C (Arduino)

Serial Source code
Python (Raspberry Pi)
C (Arduino)

Trends?
“Same trends that have been true
for decades. Higher levels of
integration, especially with new
kinds of IO like RF (ESP-12/32,
for example), more memory of
various types, faster clocks,
lower cost, lower power, smaller
packages. I wouldn’t expect
those trends to change much
over the coming years or tens of
years. “

My Projects
Eco Friendly
Involve Friends
Ultimate Playground
Non Functional Requirements:

Home Automation
Voice control - Lights
IR Led - Old Speakers
RF (433 MHz) - Bathroom heater
Future:

- Restart Router? :)

- Water boil

- Dream: laundry hanging

- Smart Mirror

- BathRoom: heater temp, room temp, 
auto light (need for handwash 3 secs)

Amazon Alexa
Voice Control
Control Home
devices (ESP8266)
Routines
Developer API

Sonoff WiFi Devices
Get it working in 5 mins
Smart Switch
Relay block
Temperature sensor
E27 light
Button

Future: Magic Mirror
ciziunas.pro

Weather Station
Temperature
Humidity
Air Pressure
Wind speed
Wind Direction
WindGuru
Energy Saving
Stevenson screen

Production is not really Friendly  
Create POC in Your Workspace

Transistors
Scheme
Relay Control

LED strip
Arduino
Addressable
Power source calculation
Resistor on Data pin
Connect ground!

“SuperComputer” 
Rack
dream
reality

Advice for Quick Start
50 sensors
Top Projects on YouTube
Insta: techwiki

Set of items
BreadBoard
Wire connectors
PCB Holder

Voltmeter 
(can be cheap)
Power Source 
(better good quality)

Voltmeter implementation
Pull Up / Pull Down

AliExpress (cheapest, long to wait)
amazon.co.uk (quick, more expesive, sometimes same price)
Evita (electronic parts, advice)
Lemona (electronic parts, advice)
Dogas (wires)

Social Media
FaceBook: 
Open-source electronic 
community Group (Lithuanian) 
Instagram: TechWiki
Community: Instructables,
hackster.io, ESP8266,
arduino.cc, raspberry.org
Great Scott
Bitluni
Andreas Spies
MakerPortal
RDagger

circuits.io (can edit and print online)PCB’s

Project Buddies
Vidmantas - Relative. Electronic. General knowledge.
Pranas - Dad. Implementation of mechanics, wires.
Robertas - Colleague. Parts as Gift and prof. advices.
Darius - Friend. Sys Admin. NonameHosts service + advice on Linux, VPN.
Vaidotas - Friend, BA. Ideas, usability, UI.
Viktor - Colleague. Frontend Dev. React, PWA.
Jonas - Colleague. UIX.
HondaTuning, Auto Tuning/Repair. Mechanics greenhouse.
AudioGuru, Friend. Audio Shop. Choosing Bluetooth DAC.
Ciziunas.Pro - Tech Buddy.
Edvardas - Friend of family. Electronic. Security system 12V help.
Mindaugas - School friend. Watering of plants.
Thank You

Literature
Beginning Robotics with Raspberry Pi and Arduino:
Using Python and OpenCV
Raspberry Pi By Example (Packt Publishing)
Beginning C for Arduino: Learn C Programming for the
Arduino, Second Edition
Arduino Sketches: Tools and Techniques for
Programming Wizardry
Pramoninės komunikacijos procesų valdyme. A.
Večkys

Contact Me
linkedin.com/in/sasnauskas/
@sasnauskastech
p.sasnauskas@gmail.com

Internet of Things

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