Dive into the electrifying world of electrical engineering with Circuit Break, a MacroFab podcast hosted by Parker Dillmann and Stephen Kraig. This dynamic duo, armed with practical experience and a palpable passion for tech, explores the latest innovations, industry news, and practical challenges in the field. From DIY project hurdles to deep dives with industry experts, Parker and Stephen's real-world insights provide an engaging learning experience that bridges theory and practice for engineers at any stage of their career. Whether you're a student eager to grasp what the job market seeks, or an engineer keen to stay ahead in the fast-paced tech world, Circuit Break is your go-to. The hosts, alongside a vibrant community of engineers, makers, and leaders, dissect product evolutions, demystify the journey of tech from lab to market, and reverse engineer the processes behind groundbreaking advancements. Their candid discussions not only enlighten but also inspire listeners to explore the limitless possibilities within electrical engineering...
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episode 21: EP#21: Let The RF Hit The Noise Floor
Podcast Notes
- Dustin Holliday is our guest this week. He was on EP#13 of MEP. Dustin has been working on MacroFab's KiCad parser and is currently researching the KiCad Python API Documentation.
- Stephen and Dustin have also been working on a customer test fixture. The fixture can program an entire panel of boards with an ST Link. A brushless motor is attached to the fixture with an encoder to automatically test the boards. See Figure 1.
- Parker has been working on the Jig Of Destiny REV 3. Parts where ordered on Monday.
- The SSPS front test panel is complete with minimal hardware mods needed. Parker didn't get to writing test code for it before the podcast but should have something to show on his twitter by Friday. See Figure 2.
- Parker got a I2C LCD display working. Ran into an issue but it turned out his SDA and SCL lines for the I2C protocol where backwards. He is using a Saleae DLA to debug the information. See his twitter post about it.
- Stephen has the analog test board for the SSPS ordered. Has a Pos/Neg rails of 35V, two OPA541 output opamps in parallel, and 0.08 Farads of capacitance. Beefy! See Figure 3.
- The MacroAmp's PCB has been completed. Stephen ordered the PCB earlier this week. It is a 2 X 10W tube Hi-Fi stereo using Korg Nutubes as the preamp.
- The FCC is going to investigate why the RF noise floor in the US has risen in the past years. Parker thinks its the "cost reduction" of devices after being certified. Will this be good or bad for makers? Does import customers have to test devices now? On the plus side, energy harvesting the RF band is more viable!
- Parker, Stephen, and Dustin get in a rant about Vss/Vdd/Vcc notation for schematics and circuits and Parker offers a solution.
- The AeroScope is a wireless, ultra-portable oscilloscope that uses Bluetooth 4.1 LE to communicate to a phone or tablet for the screen. Would be useful for Maker style field work. 100Mhz, 500M/samples, +-40V input. Fairly typical specifications. Runs $260 on the crowd funding website.
Special thanks to whixr over at Tymkrs for the intro and outro theme!