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Week 2 Electrical Subsytem Testing

Week 2 Electrical Subsytem Testing. MSD II. Transceiver Communication. Used two Linx EVM-915-250 transceivers with evaluation boards with breadboard to attempt communication between the two devices. 1. 2. 3. 24. 3. 1. 2. 24. Transceiver Communication. Fed 4V input supply to Vcc

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Week 2 Electrical Subsytem Testing

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  1. Week 2 Electrical Subsytem Testing MSD II

  2. Transceiver Communication • Used two Linx EVM-915-250 transceivers with evaluation boards with breadboard to attempt communication between the two devices 1 2 3 24 3 1 2 24

  3. Transceiver Communication • Fed 4V input supply to Vcc • Created arbitrary analog pulse (square wave) on function generator as input to transmitting transceiver • Checked receiving end to observe signal

  4. Evaluation Board Pinout

  5. Initial Results • Function generated signal seen to be fed through receiving input of one transceiver • Output of same transceiver showed periodic but non-square wave signal • Input of second transceiver showing same periodic signal • Thoughts: Square wave signal was not being sent properly; need to try to use Raspberry Pi to create digital signal to send • May require more complicated circuitry

  6. Next Step • Use Raspberry Pi tutorials to allow for complete interface with transceiver/understanding of implementation • Research Raspberry Pi with LCD screen as possible solution to user device • Reasoning: Using Raspberry Pi with testing implies knowledge and experience already gained – makes sense to continue using in final product • Also fairly cheap and looks appealing at first glance

  7. Adafruit 1115 Blue + White 16 x 2 LCD + Keypad Kid ($20.00)

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