Week 2 Electrical Subsytem Testing MSD II Transceiver

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 24 3 21 24 3 2 1

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

Evaluation Board Pinout

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

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

Adafruit 1115 Blue + White 16 x 2 LCD + Keypad Kid ($20. 00)