Handsfree ChatGPT Terminal | Full Electronics DIY Tasks

For this challenge, we might be developing a ChatGPT Terminal fully hands-free – taking questions & replying solutions absolutely in a handsfree method!

Whereas Pi-zero is a full-fledged pc, ESP32, Arduino UNO & Mega or Maixduino are mere MCUs. Subsequently, they are going to definitely be many instances inferior to Pi-zero. However if you happen to evaluate the shape issue, variety of GPIOs, pace and value, Pi-zero 2W is tremendous aggressive! It might probably do all that the opposite MCUs can do besides onboard an analog-to-digital converter. For an analog-to-digital converter, we’ve to make use of a further [ADC] chip [like MCP3008] with Raspberry Pi. Pi-zero is accessible for as little as INR:1600 at many shops whereas Arduino Mega additionally prices an analogous value! I can say if the Arduino fever is over now then the small pc cum MCU-like boards like Pi Zero, Orange Pi, Nano Pi, and Banana Pi are on the rise now.

Sound output on Pi Zero

There isn’t any sound output on the Pi-Zero board. To have sound output one has to attach an HDMI gadget [in other words a TV] to Pi-Zero and the sound will come out in regular method. There are HDMI-to-AV output gadgets which can be utilized to separate out the video and audio output. After it’s important to connect an amplifier to breed the weak audio sign to a loudspeaker. Nevertheless, there may be one other simpler method which is proven within the schematic. Any two of the PWM GPIO pins [12,13,18,19] can be utilized to pressure audio output by including only one line in /boot/config.txt file. dtoverlay=audremap,pins_18_13. The audio is taken out utilizing a small filter association adopted by a 2-watt PAM8403 amplifier.

Schematic of audio output

The amplifier is rated for 5Volt nevertheless it works on 3.3 volts with a small speaker

BOM

• Raspberry Pi zero 2W – INR:1600
• PAM8403 Amplifier – INR:50
• 4OHM Audio system [02 nos] – INR:120
• USB microphone – INR:170
• OTG cable for attaching a standard USB microphone

Pi-zero has just one micro USB port for exterior connections. To attach a standard USB to it, we want an OTG cable whose one facet is a male micro USB and the opposite facet is a standard feminine USB so to insert the USB microphone.

Sequence of Operations

It is a fully hands-free operation. Our directions will probably be offered by audio message and the solutions will probably be audio once more! There will probably be a push button. When you press it, the gadget will ask you to reply the query. When you full the query inside 10 seconds, the gadget will search your affirmation by means of a sure or no audio response. If no, it would ask you to start out yet again. If sure, it would ask ChatGPT to supply the reply. As soon as it receives the reply, it would converse it out for you. After the sequence, it would anticipate a button press! The loop goes countless!

The button press is made bounce-free to keep away from a number of working of the identical code.

Undertaking code: Earlier than you begin this challenge you should get your chatgpt api-key which is accessible totally free from openai.com. HerePlease register your electronic mail handle after which get the api-key which must be inserted within the api-key variable in vi_chatgpt.py code.

button_listener.py = It is a button press code, which displays a GPIO button [17 here, you can change it]. As soon as the button is pressed, it would begin a shell program
– vi_chatgpt.sh.

vi_chatgpt.sh = This code will begin the primary code – vi_chatgpt.py. This code is to be made executable by issuing a command like this.
$> chmod +x vi_chatgpt.sh

vi_chatgpt.py = Foremost challenge code which when completed, will launch management to button_listener.py once more to watch the following button press occasion

Autostart on boot: To make the code fireplace up on each boot of Pi-zero, first be sure that the Pi zero logs robotically into console mode [or graphics mode], You needn’t connect a monitor for that. You’ll be able to ssh to your pi-zero. Then within the residence folder [/home/bera/] there’s a .profile file, open that file utilizing nano.

$> nano /residence/bera/.profile, On the finish of that file, connect this line. Put it aside and shut it. python /residence/bera/button_listener.py & Subsequent time you reboot, this system will begin robotically and can anticipate the button press occasion!

Software program

Some software program it’s possible you’ll want to put in first.
$> pip set up open
$> pip set up speech_recognition
$> pip set up subprocess

Additionally, it’s important to be sure that SSH is turned on in your Raspberry Pi configuration and Web is accessible in your community. Surprisingly it has been discovered that the USB microphone could be very delicate to catching sound from the opposite nook of the room amidst a break up AC indoor unit is on. The ceiling fan is to be averted or may be run on the slowest pace

Aftermath

It’s potential to even substitute the ‘button press’ occasion by a hard and fast audio command like – ‘Daisy begin’ or ‘Daichi begin’ and so forth. nevertheless it makes the Pi-zero operation distinctively sluggish however positive it would work higher in Pi-4 or Pi-5. Assist has been sought & obtained in the course of the making of this challenge from openai.com

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