Angelica’s Voice Changer

I also built a voice changer, which was a kit from Apogee Kits. The major pieces of the voice changer are the 2 chips. The larger chip in the circuit is HT8950. It shifts the frequency of an input voice, ultimately producing a dramatic output voice. Our voice has a specific frequency range. This voice changer has a robotic voice, high pitch voice, low pitch voice, and a vibrator voice. The smaller chip in the circuit is LM386N. It consists of a low voltage audio power amplifier. It is regularly used with battery- powered devices. A minor piece of the circuit is the vertical trimmer, which is a resistor. It serves as an adjustable volume. Another minor piece is the horizontal trimmer. It serves to adjust to the sensitivity of the microphone.

Angelica’s MiniPOV

I also built a MiniPOV, which is a kit from Adafruit. The major part of the minipov is the ATtiny2313, which is a microcontroller chip. It is customized by the AVRDUDE, which is a command line program. The LED lights are controlled by the chip and coding. 0 is off and 1 is on. There is a frequency controlled by the chip that allows you to see an image through the flashing of the lights. A minor part of the minipov is the diode, which limits the flow of current in one direction.

Angelica’s MintyBoost

I created the minty boost that can charge an iphone, which was a kit from Adafruit. The input has 3 volts. In order for the output to have 5 volts, the entire circuit acts as a boost converter. The input is the batteries and the output is the USB port. A boost converter is a power converter whose output voltage is greater than its input voltage. Some parts of the circuit is the capacitors, which stores electrical charge, and a diode that limits the flow of current in one direction. However, the most important part of the minty boost is the chip. The chip has a complex structure, which helps boost the voltage.

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