Adding Audio Output To The Raspberry Pi Zero - Tinkernut Workbench

The Raspberry Pi Zero W is an amazing miniature computer piece of technology. I want to turn it into an epic portable Spotify radio that displays visuals such as Album Art. So in this new series called "Tinkernut Workbench", I show you step by step what it takes to build a product from the ground up.

__________________________
=#=#=#= Important Links =#=#=#=

_____________________________
=#=#=#= Become a Patron =#=#=#=
_____________________________
=#=#=#= Submit your ideas =#=#=#=
_____________________________
=#=#=#= Support the show =#=#=#=
_____________________________
=#=#=#= Follow =#=#=#=

[Ed.E]

I like the new style, it is easier to follow

[Exterminatr]

Just want to say that I really liked the style and the layout of this video... Keep up the good work!

[deadWu]

As a non native english speaker, it was really informative and easy to follow. Thanks for sharing!

[RapiBurrito]

It's a shame the workings of the circuit you made were not explained.. I remember long hours studying the concepts related to filters and all the math that comes with it. Guess math isn't interesting enough for popular videos =(. Ayways the TL;DR: he forced the raspberry pi to output the left and right audio signals through the GPIO pins as a PWM waveform, but you cannot use that to drive a speaker because of the high frequency content and the DC component so you need to use a low pass filter and a DC blocking capacitor for each channel to end up with a passable audio output, possible improvements could be: adding another pole to the filter or having another filtering stage, using larger blocking capacitance to improve low frequency response, adding transistors or op-amps to avoid drawing large currents directly from the GPIO pins and prevent any input loading and finally match the impedance of all stages to improve frequency response.

[AsbjornOlling]

The Mr. Robot font works really well as a title card - not so well as labels and lists on-screen. It gets confusing to look at when there's a complex background, or multiple lines of text.

Just a minor note - the project is super cool!

[sortsvane]

I am a long-time subscriber of yours. An I can tell you surely that this is THE BEST format of your videos. Much much better than all of your previous styles.
(I love MR. Robot Too😁)
GREAT WORK !

[Grumpycat]

Thinkernut is that kind of guy who's bored of breaking into pentagon's servers.

[tetrahed]

Thank you, I've just added this to my retropie and sounds great, i used ceramic capacitors instead of polyester ones, that's all what they had a the local tech shop. Next thing is to build my picade

[raqbit]

Just so you know, you can place an empty file called 'ssh' on the /boot directory of the sd card, to automagically startup ssh! Same goes for wifi, you just have to put a 'wpa_supplicant.conf' file with credentials in the /boot directory. When the pi starts up it will copy the wpa_supplicant file to the right place, and the pi will detect the ssh file and enable ssh. That boot directory, by the way, is accessible when you've flashed your sd card, as a partition in windows/macos/linux! This way you can easily enable those things without connecting a monitor and keyboard to your pi zero. I'm currently getting a lot out of my pi zero w, without even having touched a dongle!

(As for the keyboard layout, this is configurable via the raspi-config utility, over ssh.)

[PimDoos]

Normally I would complain about how you changed styles again, but hey I actually quite like this style!

[SverdIndustries]

Does it really have to be a polyester film capacitor though? I thought the capacitive value was the only thing that mattered, but I'm happy to be proven wrong!

[Whatsthegeek]

So, you're basicly making a DAC... Do you think there's any way of making it work with a 12bit i²c ADC ?

[explodingcamera]

On Windows 10 you can also use bash on Ubuntu on Windows for ssh

[UranusProductions]

Dont know if you already figured this out but you can install something called "Shairport" which turns the Pi a server for audio airplay. You can wirelessly stream music to it with iTunes, a Mac computer or iOS devices (with Spotify App). Not sure if it works on other devices.

[Xyolyp]

If you are using Windows 10 you could enable the Linux subsystem to SSH to the Pi

[RahulPandit-fmbg]

sir I am not getting headphone option in audio option in ras pi zero only getting HDMI option please help me

[AzVidsPro]

good quality videos. Keep it up. I will buy a pi soon

[derekdowns]

Had you considered audio over Bluetooth or HDMI? Perhaps grabbing the audio from an HDMI to VGA adapter?

[Efariasr]

Awesome! thanks to share your knowledge...

[shubhamadtp]

wow you just took a simple project and make it awesome
i like your this

can we use it for nano ai system
mine does not work properly