Circuit Break - A MacroFab Podcast

ParkerMAX6682 breakout board to read the thermistorsEngineer Spotlight on All About CircuitsFord Climate Controlled Seat Module Breakdown Peltier setupTemperature feedback is via thermistor 54K to 240K with the resistance around 170K at room tempPossibly a NTC 200K?Fan uses a LB11988HR from OnSemi 3 WireInteresting setup to control the speed of the fanWhat part is Dpak with marking 065886AStephenThe uTracer 3 design update Full on scope creepAdding a STM32 mcu to control the relays to make it "safe"RFODigital circuits: Now with more analog!Using memristors as data storage devicesTwo memristors into the output totem-pole of a classic CMOS converter, between the usual p-mosfet and n-mosfet – effectively adding a potentiometer, whose wiper is the inverter outputBuy memristors?Interviewing engineers? Should you bring your project or not?Tags: All About Circuits, electronics podcast, Ford Climate Controlled Seat Module, LB11988HR, MacroFab, macrofab engineering podcast, MAX6682, memristors, MEP, Podcast, scope creep, Thermistors, uTracer

13 Juni 201852min

StephenThe uTracer 3 A tube curve tracer that is very powerful.Some upgrades that are in the mix New interface for selecting socket connections - going to have 8 and 9 pin sockets with rotary switches for each pinUpgraded ground loop for measuring the grid current on triodesIntegrated FTDITransistor curve tracer (only tests the "positive" transistors PNP,N-Channel stuff)Lab Notebook: http://dos4ever.com/uTracerNotebook/Notebook.html#PlateSSPS - The entropy creatorParkerNew Article: Key Parts of an Arduino: How to Integrate the Arduino Platform into your ProductReading temperature NTC thermistors Voltage divider methodWheatstone bridge circuitDedicated IC like the MAX6682MUAOthers ways?Are space ships and space suits rated for external positive pressure? Relevant  Reddit ThreadRFOSaelig has a new programmable 128W Power Supply With 1mV/1mA PrecisionOutput: 0 – 16 Volts / 0-8 AmpsResolution: 1 mV / 1 mALow Ripple & Noise: <= 350 uVrms / 3 mVpp / <2 mArmsRemote Voltage Sensing Capability$260Tags: electronics podcast, Key Parts of an Arduino, MacroFab, macrofab engineering podcast, MAX6682, MEP, Podcast, Saelig, SSPS, The Entropy Creator, Thermistors, uTracer, Wheatstone

7 Juni 201846min

Brandon SatromDeveloper evangelist for ParticleThe founder of Carrot Pants PressLoves to talk about Javascript, open source, microcontrollers, robots, and what ever new shiny tool or technology that is currently distracting himKitchen Sink of badges designed for Maker Faire San Mateo.Favorite BagelBlinky of IoTParker unboxed a Particle PhotonIncluded in the box is a photoresistor, a LED, breadboard, and some resistorsParker built the circuit and programmed the Photon in under 5 minutesBuilding an IoT DeviceSpec Sensors 3SP Ethanol 1000Low Power Consumption of around 10 to 50 uW0-1000ppm Ethanol rangeIt has 3 analog outputs Vgas which is proportional to the gas we are measuringVref which is around half the supply voltage and is used as a fixed zero referenceVtemp is the temperature of the sensor used to set the temperature compensationParticle Photon reading the analog outputs of the Spec Sensors 3SP Ethanol 1000Posts to the cloud about the status of the sensorsCode for this can be found hereIssues porting the Arduino Code to the Particle Platform Floats -> DoublesParticle.Variable do not show up if you are doing Particle.Publish too fastThe relay board is connected to an industrial light tower Light tower - NPTL5-W-E 24VPull down I/O lines to turn on lightsDiscount codes for MEP ListenersParticle is giving MacroFab Engineering Podcast listeners a discountUse the URL https://store.particle.io/discount/MacroFabFam to get 15% off anything in the Particle StoreFor free shipping use the code “"ParticleFamShipping"Gets a free starter kit with the mesh Particle boards by using the code "ParticleFamStarter"AnnouncementsHouston Hardware Happy HourJune 7th at SlowpokesBring hacks and hang outTags: 3SP Ethanol 1000, BLinky of IoT, Brandon Satrom, Carrot Pants Press, electronics podcast, MacroFab, macrofab engineering podcast, MEP, Mesh Networking, Particle, Podcast, Serial Terminal, Spec Sensors

31 Maj 20181h 7min

StephenMute circuit designPDF of the schematicIs it really digital or analog? What is the defining difference between the twoParkerGameboy VGA projectAdded SN74LVC8T245 level shiftersDesigning a flat flex cable? Will document it on his blogLeft to do on the schematic side of thingsVGA connector Possible L717HDEH15POL2 part?3.3V TTL -> Analog VGA signal Going to use a resistor ladderCurrent dev board uses 4bit VGA with 500Ω, 1kΩ, 2kΩ, and 4kΩ ladderSerial Terminal? Never have done this in verilog FT230X to USBBrewery wiringR.F.O.Summer projects ideas for senior in computer engineeringCar counting and just designing a PCBSSPS update? :)AnnouncementsTwitter Chat Info May 25th Friday at 1PM CSTUse #MacroFab to join the conversationMacroFab Monthly Electronics MeetupMay 23rd 6PM at MacroFab HQ in HoustonBrandon Satrom from Particle. Going to give a talk about IoT fundamentals.We will stream it on Twitch for non-HoustoniansHouston Hardware Happy HourJune 7th at SlowpokesBring hacks and hang outTags: electronics podcast, Flat Flex, Gameboy VGA, Is it really digital or analog?, L717HDEH15POL2, MacroFab, macrofab engineering podcast, MEP, Podcast, Serial Terminal, SN74LVC8T245, SSPS, Summer Projects

23 Maj 20181h 5min

StephenMoving to Denver, ColoradoPodcast will still go on in a remote form, similar to another popular electronics podcastParkerPosted on his blog recently and will be doing more!R.F.O.The Nintendo switch has been hacked – via hardware! First discovered by fail0verflowSwitch runs on the Nvidia Tegra X1 platformPut the switch into a USB recovery mode by shorting out some pins on the Joy-Con ControllerThen trick the Switch's USB stack by sending a bad "length" argumentAllows homebrew and linux to run on the SwitchSay Hello to Android Things 1.0Enables you to build and maintain Internet of Things devices at scale.Provides hardware, rich dev api’s, and back end infrastructureSystem-on-Modules (SoMs) - 3 year “long term support”Raspberry Pi 3 Model B support for prototyping onlyListener email: "A topic I'd be interested in hearing you guys discuss is how you go about intentionally improving your engineering skills. I've been thinking a lot recently about the idea of achieving "mastery" of a skill and I'm quite interested in other people's take on the topic."AnnouncementsTwitter Chat Info May 18th Friday at 1PM CSTUse #MacroFab to join the conversationMacroFab Monthly Electronics MeetupMay 23rd 6PM at MacroFab HQ in HoustonBrandon Satrom from Particle. Going to give a talk about IoT fundamentals.Houston Hardware Happy HourJune 7th at SlowpokesBring hacks and hang outTags: electronics podcast, MacroFab, macrofab engineering podcast, MEP, Podcast

16 Maj 201839min

Mashup episode with Embedded.FMElecia White and Christopher White are the hosts of the Embedded.FM podcast It is a podcast dedicated to the many aspects of engineeringElecia and Christopher talk about the how, why, and what of engineering, usually devicesThe focus is bringing on guests and experts onto the podcastHow to make Software and Hardware Engineers work better togetherSchematics for the Apollo Guidance Computer and their Kicad replica on githubAnnouncementsTwitter Chat Info May 11th Friday at 1PM CSTMacroFab Monthly Electronics MeetupMay 23rd 6PM at MacroFab HQ in HoustonBrandon Satrom from Particle. Going to give a talk about IoT fundamentals.Houston Hardware Happy Hour June 7th at SlowpokesBring hacks and hang outTags: Christopher, Elecia, electronics podcast, Embedded.FM, firmware, MacroFab, macrofab engineering podcast, MEP, Podcast, Software Engineers

10 Maj 20181h 31min

StephenFixing Jerry's Amp that picks up radio signalsThe Johnson NoiseE34L TubesParkerDAC Article Part 3 CompleteDAC fixture parts arrived to finish Part 4 of the article seriesDetails on the MacroFab plans for DefCon 26Gameboy Update Check out the youtube video from the BenHeck ShowTried out the new Eagle V9PinHeck update on the software sideRFOPCB Grounding Star GroundsPlane and PlungeGalactic GroundingAnalog devices article on groundingTiny Arduino + FPGA = SnoAltera MAX10 based development boardThe MAX10 comes preprogrammed with functions that match the Arduino APIThese built in modules do the analog to digital conversion, servo control, operate NeoPixels, and a host of other functionsHackaDay Article by Al Williams who has been on two previous podcasts: EP#57 and EP#94.Analog-rich MCU shoots for sensor nodesMicrochip PIC16F18446ADC can run with the processing core shut-down, waking the core when requiredYou can sign up for a free board here on the Microchip site?MPLAB Xpress PIC16F18446 Evaluation BoardTags: DAC Article, DefCon26, E34L Tubes, Eagle V9, electronics podcast, Johnson Noise, MacroFab, macrofab engineering podcast, MEP, PCB Grounding, PIC16F18446, PinHeck, Podcast, Sno FPGA

2 Maj 201851min

Trey GermanFirst guest on the MEP way back on EP#10Second appearance was EP#38Icarus TrophyPolymorphic LabsStewart & Stevenson M1083AnnouncementsTwitter Chat Info April 27th Friday at 1PM CSTMacroFab Monthly Electronics MeetupMay 23rd 6PM at MacroFab HQ in HoustonBrandon Satrom from Particle. Going to give a talk about IoT fundamentals.Houston Hardware Happy HourMay 3rd at SlowpokesBring hacks and hang outTags: electronics podcast, Icarus Trophy, M1085, MacroFab, macrofab engineering podcast, MEP, Podcast, Polymorphic Labs, Trey German

25 Apr 201849min