The AudioPhool
The AudioPhool
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ARM Microcontroller MIDI-to-CV: A Straightforward Guide
Support the channel! :)
www.patreon.com/TheAudioPhool
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Arm microcontrollers are used by engineers all over the world to solve just about any problem you could possibly think of. Everything from your phone or laptop down to your dishwasher probably has an Arm core processor in it!
This week we're going to use an Arm microcontroller to do a MIDI to CV conversion unit. This takes incoming MIDI messages from our MIDI controller and converts them into control voltages to feed into our oscillators and other units.
STMCubeIDE: rb.gy/z48z7c
TeraTerm: rb.gy/anl1me
Patreon Microcontroller Series: rb.gy/z48z7c
My Main.c File: rb.gy/nr3kej
00:00 Intro
00:13 MIDI to CV
00:40 MIDI Basics
01:20 MIDI In Circuit
01:50 UART Setup
03:10 Print Out MIDI Message
05:00 Interrupts
06:32 Receiving MIDI!
08:50 System Overview
10:35 DAC, Timer & GPIO Config.
12:10 Note On Message
12:50 Setting the DAC
15:50 Trigger Signal Timer
18:05 Gate Signal Logic
zhlédnutí: 8 048

Video

Master Op-Amp Imperfections With This DIY Sawtooth Oscillator Design
zhlédnutí 15KPřed rokem
Support the channel! :) www.patreon.com/TheAudioPhool Operational amplifiers (op-amps) have imperfections! Things like input offset voltage, input offset currents, input bias currents etc. We are making a sawtooth core voltage controlled ocillator (VCO) in this video, which requires us to use an op-amp integrator, and deal with all the imperfections that comes with it! We'll use a trusty JFET t...
Design Your DIY Power Supply! (+/- 12/15V)
zhlédnutí 54KPřed 2 lety
Support the channel! :) www.patreon.com/TheAudioPhool Today we're going to have a look at the steps involved in designing a split rail power supply (one containing positive and negative voltages) for your eurorack or similar synthesizer! Including having a look at AC voltage, calculating ripple voltage, picking appropriate capacitor values & more! Patron Only Video: www.patreon.com/posts/new-vi...
Build A Simple Sine Wave Oscillator
zhlédnutí 61KPřed 2 lety
Support the channel! :) www.patreon.com/TheAudioPhool This time we're looking at how to build the venerable Wien Bridge Oscillator circuit. Using some clever feedback with a self-biasing JFET. This circuit Is essentially a very high Q filter, fed back using an op-amp with positive feedback to create an oscillation. Which is then sustained by careful managing of the op-amp closed loop gain. Sche...
DIY Phaser Circuit With Voltage Control
zhlédnutí 18KPřed 2 lety
Support the channel! :) www.patreon.com/TheAudioPhool This week we're going to be expanding on the simple phase inverting circuits we made last time, this time adding a bit of voltage control to make a Phaser! This circuit shifts the phase of a selected range of frequencies, so that when you mix the phase shifted frequencies back in with the oringial, you get a really thick sound. It's a pretty...
DIY Phase Inverter & Attenuverter
zhlédnutí 7KPřed 2 lety
Support the channel! :) www.patreon.com/TheAudioPhool 00:00 Intro 00:26 What is Phase? 02:57 Phase Flipping Circuit 07:53 Phase Flipper Demo 09:01 Attenuverter Circuit 09:53 Attenuverter Demo 12:58 2 Channel Mixer Today we're looking at how to improve the mixer we built last time with our invertin op amp summing mixer circuit. We had an issue where we needed to flip (invert) the phase of one of...
Simple DIY Mixer w/ Op-Amps
zhlédnutí 41KPřed 2 lety
Support the channel! :) www.patreon.com/TheAudioPhool Today we're going to apply what we've learned about op-amps to make a simple summing mixer. This allows us to mix multiple signals to a single output channel, using nothing more than a few op-amps and a handful of resistors! We'll see how we can do this with an inverting or non-inverting configuration and the advantages or disadvantages each...
Making Transistors Easy.. With Op-Amps!
zhlédnutí 15KPřed 2 lety
Support the channel! :) www.patreon.com/TheAudioPhool Today we're looking at how our op-amp golden rules can make those annoying things about transistors disappear completely! No more VBE drop, No more temperature problems! By putting a transistor in the feedback loop of an Op-Amp, the negative feedback will enable us to monitor what the output of the transistor is, and the op-amp will compensa...
How Do Op-Amps Work?
zhlédnutí 11KPřed 2 lety
Support the channel! :) www.patreon.com/TheAudioPhool You may (or may not!) know the 'golden rules' for op-amps. A few simplifying rules that allow us to analyse many op-amp circuits with ease. But do you know WHY those rules work? What is going on inside an op-amp? Lets have a look!
Transistor-Based Voltage Controlled Amplifier (VCA)
zhlédnutí 14KPřed 2 lety
Support the channel! :) www.patreon.com/TheAudioPhool This is a continuation of last time, where we learned how a simple differential amplifier (diff amp) works. We're going to take that design and add a clever thing called a current source in the 'tail' of the circuit, and see how that makes the circuit voltage controllable! This is a more advanced, and much improved VCA compared to my 1 Trans...
Differential Amplifiers Made Easy
zhlédnutí 61KPřed 3 lety
Support the channel! :) www.patreon.com/TheAudioPhool Differential Amplifiers are one of those circuits that can look a bit scary. But we will see today that if you look at it the right way, a diff amp is really no more complicated than the humble common-emitter amplifier! By understanding how a differential amplifier works, we will be ready to really delve deep into operational amplifiers (op-...
High Gain Transistor Circuits
zhlédnutí 11KPřed 3 lety
Support the channel! :) www.patreon.com/TheAudioPhool We're capping off our little series on transistor amplifiers by looking at how we can exctract a little more gain, bypassing the emitter resistor with a capacitor! This builds on the last couple of videos so be sure to check those out of you haven't seen them! Schematic: drive.google.com/file/d/1KFLqLC_FXTV_cBJkSCb7o_sqb5_YXRPL/view?usp=sharing
Simple VCF & Transistor Amp Design!
zhlédnutí 10KPřed 3 lety
Support the channel! :) www.patreon.com/TheAudioPhool This time we're going to do something a little more involved! We're taking an old PAIA discrete VCF design and we're going to try and design an amplifier for it's output. This is a tough one! In this video we have a look at a common-emitter amplifier, as well as some emitter-base bootstrapping to try and improve this circuit! Schematics: dri...
Make Your Own Drum Pad!
zhlédnutí 4,8KPřed 3 lety
Support the channel! :) www.patreon.com/TheAudioPhool A nice easy one this week, we're going to make a drum pad out of some bits and pieces i have kicking around, and we're using an op-amp comparator circuit to turn the drum pad output into a trigger. This can then be used to do whatever you want! We explore a simple envelope generator as a method of controlling a few drum sounds from previous ...
Single Supply Transistor Buffer
zhlédnutí 24KPřed 3 lety
Support the channel! :) www.patreon.com/TheAudioPhool We are going to carry on learning how to make transistor circuits with one of the simpler, (but very useful!) circuits, the Emitter follower :) This behaves very much in the same way as the op-amp buffer that we've used previously, only it runs off a single supply.
DIY Metallic Percussion Synth
zhlédnutí 7KPřed 3 lety
DIY Metallic Percussion Synth
Semiconductors Explained: Diodes!
zhlédnutí 2,3KPřed 3 lety
Semiconductors Explained: Diodes!
Single Transistor Voltage Controlled amplifier! (VCA)
zhlédnutí 32KPřed 3 lety
Single Transistor Voltage Controlled amplifier! (VCA)
Capacitors Explained part 3: Filtering & Phase Shift
zhlédnutí 3,3KPřed 3 lety
Capacitors Explained part 3: Filtering & Phase Shift
Capacitors Explained: Part 2 - Charging With Constant Voltage
zhlédnutí 3KPřed 3 lety
Capacitors Explained: Part 2 - Charging With Constant Voltage
Build Your Own 808 Kick Drum Synth!
zhlédnutí 12KPřed 3 lety
Build Your Own 808 Kick Drum Synth!
Capacitors Explained: Part 1 - Charging With Constant Current
zhlédnutí 4,7KPřed 3 lety
Capacitors Explained: Part 1 - Charging With Constant Current
Op-Amp Golden Rules & Designing An Active Filter!
zhlédnutí 26KPřed 3 lety
Op-Amp Golden Rules & Designing An Active Filter!
Circuits 102! - Practical Circuit Examples
zhlédnutí 2,8KPřed 3 lety
Circuits 102! - Practical Circuit Examples
Simple RC Filter!
zhlédnutí 3,5KPřed 3 lety
Simple RC Filter!
Simple CMOS Sequencer
zhlédnutí 8KPřed 3 lety
Simple CMOS Sequencer
Circuits 101
zhlédnutí 9KPřed 3 lety
Circuits 101
CMOS 40106 'Sync' Effect
zhlédnutí 7KPřed 3 lety
CMOS 40106 'Sync' Effect
Electronics Basics & A Simple Oscillator!
zhlédnutí 13KPřed 4 lety
Electronics Basics & A Simple Oscillator!

Komentáře

  • @rrangana11
    @rrangana11 Před dnem

    Great content, but you speak a bit too fast. Please try to slow down a little, so it's easier to follow.

  • @tomgiorgini9154
    @tomgiorgini9154 Před 9 dny

    mains?

  • @user-ed4bp4vf3i
    @user-ed4bp4vf3i Před 10 dny

    finally something helpful for my exam ..thanks a lot

  • @smbanandanand4566
    @smbanandanand4566 Před 11 dny

    Amazing video, great clarify, leant a lot; thanks a million !. Regards from India.

  • @buffisgames9482
    @buffisgames9482 Před 13 dny

    Its hard to overstate how good your videos are. Good stuff

  • @KillerDragon987
    @KillerDragon987 Před 20 dny

    That is a wonderful single-transistor + 20-transistors in an op-amp IC VCA!

  • @Necrozene
    @Necrozene Před 21 dnem

    How many transistors would you say are in an op amp?

  • @justinhoffman1111
    @justinhoffman1111 Před 26 dny

    hmmm could you make this Stereo ( dual mono) by making 2 configs( left and right)- 8 mono for left going to 1 left and then 8 mono right going to 1 right? or is it not that simple lol

  • @gauravdesai-j5j
    @gauravdesai-j5j Před měsícem

    how can the current source be changed into a digitally controlled current source to charge that capacitor?

  • @devotedmind7805
    @devotedmind7805 Před měsícem

    Can you give all in paper note

  • @M1music811
    @M1music811 Před měsícem

    So… you literally made a “Transistor VCA video” With NO FUCKING TRANSISTORS…. Bro I hate the internet I hate ChatGPT Fucking impossible to ever get clear directions to do anything

  • @tailbiterz
    @tailbiterz Před měsícem

    Really liked this.

  • @Ganjalf_the_Green
    @Ganjalf_the_Green Před měsícem

    Tyabk you for the amazing explanation. If i understand correctly, then, the reason why we often use a current mirror as a tail current generator, instead of a resistor with fixed potentials, is that the current mirror will *ideally* feature a very high output impedance, thus since this is featured at the denominator of the common mode gain, this means that the common mode gain will be hugely reduced?

  • @H3nryl4v3ry
    @H3nryl4v3ry Před měsícem

    I've got two questions. 1. Can I use this differential amplifier in parallel with a load. 2. Do I need to impedance match the differential amplifier to the load impedance

  • @kaszaniarz
    @kaszaniarz Před měsícem

    I dont undertand how this will be very stable power supply. Zener drop voltage depends on current and current will not be stable here, because Vin in not constant.

  • @tmdrake
    @tmdrake Před měsícem

    Smart.

  • @onpatrolforthejuice
    @onpatrolforthejuice Před měsícem

    I wish you were the teacher in my electronics class lol.

  • @MrMichaelMclaren
    @MrMichaelMclaren Před měsícem

    great video!

  • @RexxSchneider
    @RexxSchneider Před měsícem

    It's worth noting that it is _disadvantageous_ to use larger filter capacitors than is necessary. This is because the power dissipated in the linear regulators is the product of the average voltage across the regulator and the current drawn. By using capacitors that are only a little larger than the minimum needed (allowing for tolerances, of course), you maximise the ripple voltage, which consequently minimises the average voltage across the regulator and hence minimises the power dissipated in it. It also minimises the inrush current on startup and maximises the conduction angle, so this is a good example of not over-engineering a design.

  • @felliperockz7857
    @felliperockz7857 Před měsícem

    One of those CZcams gold videos for electronics

  • @Jan-dB
    @Jan-dB Před 2 měsíci

    The Paia VCF design is very interesting. As to minimize the load of the following simple transistor amplifier, you changed it into a more complex bootstrapping-stage ... but would it not be simpler to add an emitter follower between the filter part and the amplifier part?

  • @29WillG
    @29WillG Před 2 měsíci

    Hi - great videos. Could you please share your email? I wanted to discuss a commission with you. Thanks.

  • @coldplay303
    @coldplay303 Před 2 měsíci

    Shouldn't the capacitor and the resistor in series to get a decay output? The voltage will be a constant 9V in your diagram I suppose

  • @alexstacey
    @alexstacey Před 2 měsíci

    This is fantastic. Well explained. Thank you

  • @NerdCloud-IT
    @NerdCloud-IT Před 2 měsíci

    0:29 haha fundamental pun

  • @mrphil1092
    @mrphil1092 Před 2 měsíci

    Brilliant! explanation.. superb!

  • @jeffsprings928
    @jeffsprings928 Před 2 měsíci

    I always wondered how the comparator inside a 555 worked

  • @iwakeupsad
    @iwakeupsad Před 2 měsíci

    Heeeeeyyyyy op amps just clicked

  • @016632
    @016632 Před 3 měsíci

    you wanna tell us how you powered the opamp???

  • @Tridenux
    @Tridenux Před 3 měsíci

    @electroboomb

  • @stevenbliss989
    @stevenbliss989 Před 3 měsíci

    This is your last video, is that permanent?

  • @stevenbliss989
    @stevenbliss989 Před 3 měsíci

    You deserve millions of subs, for such good beginner videos! :) I am a retired electronics engineer and I always struggled to explain in simple terms to juniors, and you do it GREAT!!!!!!!!!!!!!!!!! :)

  • @cozycactus
    @cozycactus Před 3 měsíci

    i remember i saw some of soundcraft console schematics. and found out interesting summing circuit. so pity i forgot what model it was...

  • @peatmoss4415
    @peatmoss4415 Před 3 měsíci

    Good video. Here is a Wien oscillator using a light bulb instead of a fet. It's based on an HP signal generator. czcams.com/video/RoAXHHhjECM/video.html I have 2 other examples on my channel.

  • @tomcatmeow69
    @tomcatmeow69 Před 3 měsíci

    I wonder how low a frequency this circuit can create. Looking for 7.83 hz. the heartbeat of earth itself.

  • @dennisvervest
    @dennisvervest Před 3 měsíci

    Thank you!

  • @berzerker17487
    @berzerker17487 Před 3 měsíci

    would it be simple enough to do this with a usb-c connection instead of a wall wart?

  • @toorikul
    @toorikul Před 3 měsíci

    1 subscribe, 1 like for your effort sir, thank you for making this amazing content

  • @repairman2be250
    @repairman2be250 Před 3 měsíci

    All that is missing is the follow up video of this project.

  • @guyleee
    @guyleee Před 3 měsíci

    Where are you? We miss you? :(

  • @larryshaver3568
    @larryshaver3568 Před 3 měsíci

    what voltages does a 7915 put out?

  • @scrummyvision
    @scrummyvision Před 4 měsíci

    holy shit what an action-packed and well done video. this connected a lot of ancient college memories to what I'm working on now. thanks!

  • @LimJim
    @LimJim Před 4 měsíci

    I know this is an older video but i just want to say thank you so much for your in depth explanation and example schematics. This video was the inspiration for my senior design project where me and a partner built a really cool modular synth style guitar pedal with a 3-notch phaser and all of the notches broken out with 3.5mm jacks. We also made a whole stage of digital effects using a Daisy Seed and because of your channel, my partner and I graduated last weekend with BS's in electrical engineering at the university of florida. Much love!!!

  • @fragnet7673
    @fragnet7673 Před 4 měsíci

    Optocouplers with cellotape. You funny

  • @simonkormendy849
    @simonkormendy849 Před 4 měsíci

    Actually, no electronic device is 100% perfect, it is currently not humanly possible to make electronic components that are 100% perfect, even a simple copper wire isn't 100% perfect.

  • @simonkormendy849
    @simonkormendy849 Před 4 měsíci

    Actually, no electronic device is 100% perfect, it is currently not humanly possible to make electronic components that are 100% perfect, even a simple copper wire isn't 100% perfect.

  • @user-ie6de8xe2f
    @user-ie6de8xe2f Před 4 měsíci

    very good practical tutorial. thanks

  • @wombatau
    @wombatau Před 4 měsíci

    Are you ok? You haven’t made a video in a very long time.

  • @malcolmhodgson7540
    @malcolmhodgson7540 Před 4 měsíci

    Wow, what a truly educational video. Learnt so much that others just dont teach. Perhaps we should rename you "Carlsberg". If Carlsberg did Electronics videos.......

  • @kamtasingh-jq2jw
    @kamtasingh-jq2jw Před 4 měsíci

    Hi, thanks for sharing the wonderful knowledge.. At 8:15, you assumed the output to be zero volt. Could you please help me understating this assumption. Could you please share some reference for that. Thanks