Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. If you continue browsing the site, you agree to the use of cookies on this website. See our User Agreement and Privacy Policy.

Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. If you continue browsing the site, you agree to the use of cookies on this website. See our Privacy Policy and User Agreement for details.

Like this presentation? Why not share!

- Introduction to the Internet of Things by Alexandru Radovici 2614 views
- Software for the Internet of Things by Alexandru Radovici 1343 views
- Cross Platform Mobile Development by Avner Solomon 3426 views
- Sensors and Peripherals by Alexandru Radovici 1042 views
- Web Services and Mobile by Avner Solomon 1760 views
- Web servers for the Internet of Things by Alexandru Radovici 1950 views

1,309 views

Published on

Electronics for the Internet of Things

Published in:
Education

License: CC Attribution License

No Downloads

Total views

1,309

On SlideShare

0

From Embeds

0

Number of Embeds

223

Shares

0

Downloads

230

Comments

0

Likes

4

No embeds

No notes for slide

- 1. Electronics for the Internet of Things SUMMER SCHOOL
- 2. Outline Electronic Signals Electricity Equations General Purpose Input / Output (GPIO) Pulse Width Modulation (PWM) Analog to Digital Converters (ADC) Microcontrollers and Computers Questions 2
- 3. Electronic Signals 3 Image from http://autosystempro.com/analog-and-digital-principles/
- 4. Analog and Digital We can only store digital signals ◦ Using 1 or several bits / sample We store an array of numbers Parameters ◦ Bits per sample ◦ Sampling rate 4 Image from http://www.centerpointaudio.com/Analog-VS-Digital.aspx
- 5. Bits per sample 1 bit signals sample ◦ Values LOW (0) and HIGH (1) ◦ digital n bits signals sample ◦ Values 0 .. 2n-1 ◦ digital representation of an analog signal (analog) 5 Image from http://www.centerpointaudio.com/Analog-VS-Digital.aspx
- 6. Sampling Sensor signals are analog 6 Image from http://www.snotmonkey.com/work/school/405/overview.html
- 7. Sampling Rate The faster we sample the higher the accuracy Nyquist Theorem ◦ Sampling frequency >= 2 x maximum frequency Voice is 0.3 .. 3.4 KHz ◦ 8KHz phone 7 Image from http://www.jazzpoparkisto.net/audio/audio32.html
- 8. Electricity Equations 8 I = U R kik å = 0 kEk å = kR kIk å
- 9. Ohm’s Law 9 I = U R I = 3V 10W+50W+ 60W = 0.025A = 25mA
- 10. Kirchhoff Law I 10 kik å = 0 - 1I + 2I + 3I = 0
- 11. Kirchhoff’s Law II 11 kEk å = kR kIk å 1L : E = 1I 1R + 3I 3R 2L :0 = 2I 2R - 3I 3R
- 12. Voltage Divider 12 1V + 2V = inV 1V = I 1R 2V = outV = I 2R We measure Vout
- 13. Voltage Divider 13 1R = 0 outV = ?
- 14. Voltage Divider 14 1R =¥ outV = ?
- 15. Voltage Divider 15 2R = 0 outV = ?
- 16. Voltage Divider 16 2R =¥ outV = ?
- 17. Voltage Divider 17 1R = 0 2R = 0 outV = ?
- 18. Voltage Divider 18 1R = 0 2R = 0 outV = ? Short circuit
- 19. General Purpose Input / Output 19
- 20. Output and Input Digital Pins ◦ Value LOW (0) or HIGH (1) Each pin acts like a ◦ battery (OUTPUT) ◦ voltage meter (INPUT) 20
- 21. Output Pins act like a battery ◦ LOW – 0V ◦ HIGH – 5V, 3.3V or 1.8V 21
- 22. Input We measure Vout ◦ It goes into the pin 22
- 23. Pulse With Modulation 23
- 24. Pulse Width We set the % of “high” cycle ◦ 0 – 0% ◦ 255 – 100% ◦ Depends on the library Implementation ◦ Hardware ◦ Software Usage ◦ LED dimming ◦ Servo Motors 24
- 25. Analog to Digital Converters 25
- 26. Analog and Digital Converters Measure voltage Parameters ◦ Bits per sample ◦ Sampling rate For 1 bit we have … 26 Image from http://www.centerpointaudio.com/Analog-VS-Digital.aspx
- 27. Analog and Digital Converters Measure voltage Parameters ◦ Bits per sample ◦ Sampling rate For 1 bit we have … ◦ GPIO Input 27 Image from http://www.centerpointaudio.com/Analog-VS-Digital.aspx
- 28. Analog and Digital Converters Measure voltage Parameters ◦ Bits per sample ◦ Sampling rate For 1 bit we have … ◦ GPIO Input 28 Image from http://www.centerpointaudio.com/Analog-VS-Digital.aspx
- 29. Analog and Digital Converters Measure voltage Parameters ◦ Bits per sample ◦ Sampling rate For 1 bit we have … ◦ GPIO Input For n bits we have … 29 Image from http://www.centerpointaudio.com/Analog-VS-Digital.aspx
- 30. Analog and Digital Converters Measure voltage Parameters ◦ Bits per sample ◦ Sampling rate For 1 bit we have … ◦ GPIO Input For n bits we have … ◦ 0 – 2n-1 30 Image from http://www.centerpointaudio.com/Analog-VS-Digital.aspx
- 31. Analog and Digital Converters One ADC Multiplexed ◦ Reads for A0 ◦ Reads for A1 ◦ Reads for A2 ◦ Reads for A3 … 31 Image from http://www.centerpointaudio.com/Analog-VS-Digital.aspx
- 32. Microcontrollers and Computers 32
- 33. Microcontrollers and Computers Simple systems Control hardware Low speeds Small memory GPIO PWM ADC Run single software Full CPUs High speeds Large memory GPIO Run OS
- 34. Microcontrollers and computers Firmware Software
- 35. Intel® Edison Firmware (will be available) Software
- 36. Questions? 36

No public clipboards found for this slide

×
### Save the most important slides with Clipping

Clipping is a handy way to collect and organize the most important slides from a presentation. You can keep your great finds in clipboards organized around topics.

Be the first to comment