AT Commands on screen
AT command testing video
Program codes
GSM SMS video
Project 33 : GSM/GPRS Phone Modem
Project 31 : Intercom System
Microphone test
Microphone and speaker with 1st stage amplifier circuit
Video 1
Project 30 : Wireless RFID Tracker
Early system setup
RFID Transmitter
RFID Receiver
Full system setup
System on PCB
Finished product
Project 29 : Bipolar Stepper Motor Driver
Driver using L298 and logic ICs
Video 1
Driver using L293D and PIC
Project 27 : 915MHz RFID Barrier Gate Interfacer
915MHz RFID Reader Interfacer
Early testing video
Project 26 : ADC and DAC Checker Board
Circuit setup
ADC0804 video
DAC0800 video
ADC DAC Board Version I
ADC DAC Board Version II 
ADC PCB Layout
Version II Video
ADC PCB Layout
Project 25 : Speed Boat Controller
Project setup
PWM output signal
Dual boat engines
Driver schematic
Early setup video
Tut 8 : First Order Circuit
Answers
7.4) Vc(t) = 40exp(-50t)
7.11) io(t) = 1.2exp(-3t)
7.40 a) Vc(t) = 4+8exp(-t/6)
7.54 b) i(t) = 3-1exp(-9t/4)
Project 24 : Leakage Current in High Voltage Application
System circuitry layout
High Voltage Set
HV SCADA early setup
Tut 5 : Superposition & Source Transformation
Answers
Q1. I = -0.125A
Q2. Ia = - 8 A
Q3. Io = 1 A
Q4.
Project 21 : Scanning Array Unit
8-wire unipolar stepper motor
Early project setup
Early project test
Early video 1
Early video 2
Test setup
Testing video
Finished product
Finished video
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