EP#13: Picture Books for Engineers

EP#13: Picture Books for Engineers

Podcast Notes

  • Our guest this week is Dustin Holliday, a Production Line Engineer at MacroFab, INC. Dustin programs the My200 paste jetter, the My500 pick and place, and the Rhythm Selective Solder. See Figure 1.
  • Stephen is working on a customers test fixture and is using the Parallax Propeller. He really likes how it is easy to route the package since each pin is just general I/O and you can change around the pin definitions.
  • Parker is almost done with the first test fixture article. Should be out soon.
  • Parker has also been testing the ESP-12E WiFi module which uses the ESP8266 IC. Seems that some USB ports don't provide enough power even though they enumerate for 500mA at 5V. The ESP-12E is on his Prop Dev Stick Bit Flicker. Code is a port of Bylnk written by Roy Eltham. See Figure 2.
  • On the Prop Fan board Parker has been working on he needed to read an analog signal without a ground reference. Instead of setting up an isolated supply and an isolated data buss he is going to try an isolated opamp. Part number ACPL-C870-000E. Have to compress the 0-14V input range to 0-2V with a voltage divider but Parker isn't looking for high resolution.
  • Stephen and Parker are probably overly excited about the fact that Digi-Key now has pictures for categories on the connectors page.
  • Another ink to circuit board project via paint pen project. This pops up every 6 to 87 months but this time they solved some of the technical issues but not all of them.
  • The Current Source, an engineer out of Florida sent us a crappy Kickstarter idea! He calls it the "Microprocessor Launchpad" and it is basically a DIY kit for making your own microprocessors from scratch. Included is a sheet of metal, micro drill bits, some bond wire, and a sharpie. Stretch goals include silicon wafers and a hack saw to cut out your die.

Jaksot(448)

EP#8: Bits That Don’t Quit

EP#8: Bits That Don’t Quit

Podcast NotesStephen and Parker do a live discussion on how the digital and analog side of the Super Simple Power Supply will interface with each other. MultiSim has been a huge part in simulating the...

25 Maalis 201639min

EP#7: The Art of Retention Force

EP#7: The Art of Retention Force

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18 Maalis 201624min

EP#6: Mythical Transistors

EP#6: Mythical Transistors

Podcast NotesParker is still working on the Super Simple Power Supply. He is designing the front panel. He is considering using some WP1043 Kingbright LEDs.Super Simple Power Supply will have two deci...

11 Maalis 201625min

EP#5: Tilting Tubes

EP#5: Tilting Tubes

Parker ordered all the parts for the SAIM this week. The v-slot rails and brackets from OpenBuild, iES-1706 servos from Leadshine, and 3D printed parts from Shapeways.MacroFab uses 3D printed parts to...

4 Maalis 201647min

EP#4: Linear Effects of Licensing

EP#4: Linear Effects of Licensing

Audio quality of the podcast leveled up! Stephen and Parker went over to The Pharmacy Recording Studio which is run by Josh Moore. He hooked them up with 2 (!) microphones and a nice an acoustically p...

26 Helmi 201617min

EP#3: Liquid Toroidal Electrons

EP#3: Liquid Toroidal Electrons

Stephen and Parker have been testing the main opamp for the OPA541. Stephen wrote a blog post detailing the opamp tests with simulation and real world testing.GitHub link to the repository for the SSP...

19 Helmi 201622min

EP#2: Mechanical MultiSIM Monsters

EP#2: Mechanical MultiSIM Monsters

Stephen continues his work on the Stupid Simple Power Supply (SSPS). He decided to go digital voltage control over analog. Also he has been trying out MultiSIM BLUE by Mouser for circuit simulation. S...

10 Helmi 201620min

EP#1: Opamp-timal Power Supply

EP#1: Opamp-timal Power Supply

Stephen talks about the Stupid Simple Power Supply (SSPS). He designed a OPA541 breakout board for testing. See figure 1.OPA541 Datasheet : Street price of $21.88.Parker brings up that blinky LEDs are...

9 Helmi 201623min

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