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1. A primary application challenge was configuring and operating the FeatherWing Music Maker Shield, due to lack of libraries for the Particle Argon. This resulted in a singular speaker sound rather than implementing different instruments according to the mood data. This also restricted us to use the inbuilt PWM function of Argon, Tone(), which converts the Argon into a low fidelity DAC.

2. Due to a single I2C communication channel, an amplifier could not be connected for amplifying the produced notes. Due to this, we had to implement a self-made low fidelity amplifier using an NPN transistor, capacitor, resistor and an external power supply.

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