The output of the participant's circuit should consist of two wires each of which are taken as inputs to our circuit and a third wire which will be taken as the 0V reference. The usual conventions are followed, that is a high output on a wire represents binary 1 and a low output represents binary 0.
The components may be assembled on bread boards, tag boards etc. However assembly on Printed Circuit boards is eligible only if these have been specially fabricated by the participant, boards from readymade kits are not to be used.
A maximum of 16 bit microcontrollers can be used.
Codec ICs and fixed point DSP ICs are allowed.
Teams must bring their own microphones.
Participants using PCBs should bring along the photo plots as a proof of their originality. Note that the judging criteria favor a proper layout of the circuit components.
On a single A1 size poster, the team should explain their device with figures, diagrams and relevant material. Teams also have to submit a detailed report in support of the design and highlighting its important aspects.
The report along with the poster will have to be submitted to the competition coordinator at the time of the competition.
The specifications for the parallel port connections are:
Min |
Max |
Units | |
High Level Voltage |
2 |
5 |
V |
Low Level Voltage |
0 |
0.8 |
V |
The output of the participants' circuit should conform to these voltage levels for the proper interpretation of the output of the participants' circuit. Any output voltage not in the 0 - 5V range taking 0V as reference voltage may damage the parallel port and thus lead to the disqualification of the team.

The participants shall be provided with one dual power supply, Model No. LQ 6324, Aplab, Regulated DC Power supply. The power supply can provide potential differences between the range of +15 to -15 V at one output terminal and 0 to32 V at the other.
Current consumption is restricted to 2A through the power supply terminals. If any circuit is found to exceed the current rating of the power supply provided, shall be disqualified.
Apart from the above power supplies a single 1 phase, 220 V, 50 Hz AC power supply shall be provided.
Both the above supplies are provided as available commercially. The organizers do not take any responsibility for their regulation whatsoever, hence participants are advised to make suitable arrangements such as power supply regulating modules, if needed.
Before connecting the circuit to the power supply the participants should be able to demonstrate that they have enough knowledge of the apparatus provided. The participants may be asked suitable questions or demonstrations in this regard. If they are unable to answer, the teams will not be provided any equipment from Techfest.
Elimination Round: Teams earning points greater than a predefined set point at the end of two minutes run time qualifies the Elimination Round.
Final Round: All the qualifying teams will be judged subjectively on the basis of their circuit design. Presentation, poster and report submitted by the teams shall also be used for judging.