Ray
Intro to DSP: Learn How DSP Filters Work
Knox Makers 116 Childress St SW, Knoxville, TN, United StatesNote: This will be an online class. Just before class, an invitation will be sent to the email you provide during registration with a link to join and a copy of the presentation in PDF format. DSP (digital signal processing) takes real-world signals such as temperature, speech, images and RF signals and manipulates them in…
Canceled: Switching Supply Design Walk-through
Knox Makers - VirtualNote: This will be an online class. Just before class, an invitation will be sent to the email you provide during registration with a link to join and a copy of the presentation in PDF format. Power supplies are part of most electronics projects. While linear regulator power supplies are relatively easy to design, switching…
Build a Coronavirus Blinky Light Circuit
Knox Makers - VirtualNote: This will be an online, virtual, live event. There's no better way to entertain ourselves in a socially distanced manner than to build a circuit that, well, doesn't *celebrate* the coronavirus but, um, *is* the coronavirus! We designed this one of a kind kit specifically for this class and it consists of 8 LEDs,…
A look inside the ubiquitous LM7805 regulator
Knox Makers - VirtualThe LM7805 is one of the most popular integrated circuits of electronics. There are certainly several appliances in your house that are using this part and its variants right this moment! All it does is convert an input voltage, for example 12V, to a fixed 5V output voltage to power circuits that require it. In…
High voltage power supply design walk through
Knox Makers - VirtualJoin Ray as he provides a casual walk through of the details of his 170V DC power supply design. The design is relatively minimal in complexity but provides several opportunities for learning about AC and DC circuitry. Design features of the supply include: 120VAC to 170VDC rectifier with inrush current limit and fuse protection Output…
Build an Optical Theremin and learn to surface mount solder
Knox Makers - VirtualWe have another custom designed, learn to solder kit at KM, this time it's a very cool optical theremin using primarily surface mount technology. Similar to the last several build classes, Ray designed the kit and Issac will be leading the class. Note that this will be a virtual class held over Big Blue Button.…
Intro to SMT: Build an Atari Punk Console
Knox Makers - VirtualThe Atari Punk Console is a retro synth circuit that appeared as a Stepped Tone Generator in a Forest Mimms book, available at Radio Shack long ago. Paying homage to the digital sounds of 1980's Atari console games, it makes some fun, or horrifically awful if you're not one of us, noises that delights the…
Time domain reflectometry… uncomplificated
Knox Makers - VirtualNow and then we see a Hackaday or other post on a Time Domain Reflectometry project. The typical example of how this measurement technique is used is for an electrical repairman to precisely determine the location of a broken, buried line to facility a repair. But there are many other uses, and understanding the basics…
Intermediate Oscilloscope Use and Understanding
Knox Makers - VirtualNote: This is a virtual event! Have you used an oscilloscope but most of the buttons and features look like hieroglyphs from a foreign land? Do you want to up your game in using this versatile piece of equipment? Have you invested hard earned cash in one of these and want to get the…
Intro to O’scopes, 10am (Sold Out)
Knox Makers - Classroom 116 Childress St SW, Knoxville, TN, United StatesThe oscilloscope is one of the most powerful (and fun) tools for troubleshooting and observing circuit behaviors. If you've wanted to look beyond DC voltages on a multimeter, which only shows a small portion of what' going on, this is your opportunity! In this class, each attendee will have a modern or semi-modern oscilloscope to…
Intro to O’scopes, 11:30am (Sold Out)
Knox Makers - Classroom 116 Childress St SW, Knoxville, TN, United StatesThe oscilloscope is one of the most powerful (and fun) tools for troubleshooting and observing circuit behaviors. If you've wanted to look beyond DC voltages on a multimeter, which only shows a small portion of what' going on, this is your opportunity! In this class, each attendee will have a modern or semi-modern oscilloscope to…
Intro to Electronics
Knox Makers - Classroom 116 Childress St SW, Knoxville, TN, United StatesHave you been interested in electronics but don't know where to start? This class does not assume any prior experience or knowledge whatsoever so here's your chance! Attendees will learn about basic concepts such as voltage, current, resistance and use of LEDs and mechanical switches and jumpers. Multimeters will be used to measure voltages and…
Going from Schematics to Breadboards
Knox Makers - Classroom 116 Childress St SW, Knoxville, TN, United StatesHave you seen cool circuits you wanted to build but weren't sure where to start? We've got you covered! In this class Ray will lead you step by step through reading a schematic and translating it into a prototype on a solderless breadboard. Each attendee will build a circuit using an integrated circuit, resistors, capacitors…
Build a Blinking Knox Makers Badge
Knox Makers - Classroom 116 Childress St SW, Knoxville, TN, United StatesHave you wanted to learn to solder or wanted to build a cool piece of Knox Makers swag? Join us for a guided build of the battery powered badge/ornament/desk-piece/gift/however-you-use-it pictured above and then take it home to earn geek street cred among your soon-to-be-jealous friends. The board consists of 13 components including resistors, LEDs and…
Advanced Serial Communications
Knox Makers - Classroom 116 Childress St SW, Knoxville, TN, United StatesIf you've used I2C, SPI or some other similar serial communications using Arduino or other microcontrollers, you probably appreciate the value. It's often as simple as copying code in and hooking up a couple of wires. But sometimes things don't work as expected. Long wires, reflections, improper pull-up resistor values, ringing, interference and countless other…
Intro to KiCAD and PCB Fabrication, Part 1/5
Knox Makers - Classroom 116 Childress St SW, Knoxville, TN, United StatesDesigning and fabricating custom PCBs opens up a new world of possibilities for miniaturization, part selection, and creativity. In this class series, you will capture schematics, perform layouts, and have your PCB fabricated by an overseas vendor. Ultimately we will build the PCB, debug it and relish in its glory. The circuit design will be…
Intro to KiCAD and PCB Fabrication, Part 2/5
Knox Makers - Classroom 116 Childress St SW, Knoxville, TN, United StatesContinuation of the KiCAD class series.
Intro to KiCAD and PCB Fabrication, Part 3/5
Knox Makers - Classroom 116 Childress St SW, Knoxville, TN, United StatesContinuation of the KiCAD class series.
Using, Choosing and Abusing Transistors
Knox Makers 116 Childress St SW, Knoxville, TN, United StatesElectronics enthusiasts use transistors as switches and amplifiers in a wide range of applications. While they are relatively simple devices they are often a source of confusion and frustration when we are called upon to use them. NPN? PNP? MOSFET? JFET? Which of the 10,000 in the catalog is the right choice? In this class…
Build a Custom Macro Keyboard
Knox Makers - Classroom 116 Childress St SW, Knoxville, TN, United StatesA macro keyboard is a custom keyboard with keys, knobs or buttons, which plugs into your USB port and can be programmed to perform a variety of tasks (or macros). If you've ever wanted to build your own custom macro keyboard, this is your chance! Here are a couple of examples: - A fairly advanced…