ESP32-S2 Hack Chat with Adafruit on Hackaday

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Join us on Wednesday, May 6 at noon Pacific for the ESP32-S2 Hack Chat with Limor “Ladyada” Fried and Scott Shawcroft!

When Espressif released the ESP8266 microcontroller back in 2014, nobody could have predicted how successful the chip was to become. While it was aimed squarely at the nascent IoT market and found its way into hundreds of consumer devices like smart light bulbs, hackers latched onto the chip and the development boards it begat with gusto, thanks to its powerful microcontroller, WiFi, and lots of GPIO.

The ESP8266 was not without its problems, though, and security was always one of them. The ESP32, released in 2016, addressed some of these concerns. The new chip added another CPU core, a co-processor, Bluetooth support, more GPIO, Ethernet, CAN, more and better ADCs, a pair of DACs, and a host of other features that made it the darling of the hacker world.

Now, after being announced in September of 2019, the ESP32-S2 is finally making it into hobbyist’s hands. On the face of it, the S2 seems less capable, with a single core and neither Bluetooth nor Ethernet. But with a much faster CPU, scads more GPIO, more ADCs, a RISC-V co-processor, native USB, and the promise of very low current draw, it could be that the ESP32-S2 proves to be even more popular with hobbyists as it becomes established.

To talk us through the new chip’s potential, Limor “Ladyada” Fried and Scott Shawcroft, both of Adafruit Industries, will join us on the Hack Chat. Come along and learn everything you need to know about the ESP32-S2, and how to put it to work for you.

join-hack-chatOur Hack Chats are live community events in the Hackaday.io Hack Chat group messaging. This week we’ll be sitting down on Wednesday, May 6 at 12:00 PM Pacific time. If time zones have got you down, we have a handy time zone converter.

Click that speech bubble to the right, and you’ll be taken directly to the Hack Chat group on Hackaday.io. You don’t have to wait until Wednesday; join whenever you want and you can see what the community is talking about.

via ESP32-S2 Hack Chat with Adafruit — Hackaday

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Hackaday: PCB Bring-Up Hack Chat

Join us on Wednesday, April 15 at noon Pacific for the PCB Bring-Up Hack Chat with Mihir Shah and Liam Cadigan!

The printed circuit design process is pretty unique among manufacturing processes. Chances are pretty good that except for possibly a breadboard prototype, the circuit that sits before you after coming back from assembly has only ever existed in EDA software or perhaps a circuit simulator. Sure, it’s supposed to work, but will it?

You can — and should — do some power-off testing of new boards, but at some point you’re going to have to flip the switch and see what happens. The PCB bring-up process needs to be approached carefully, lest debugging any problems that crop up become more difficult than need be. Mihir and Liam from inspectAR will discuss the bring-up process in depth, offering tips and tricks to make things go as smoothly as possible, as well as demonstrating how the inspectAR platform can fit into that process, especially with teams that are distributed across remote sites. If your board releases the Magic Smoke, you’ll want to know if it’s your design or an assembly issue, and an organized bring-up plan can be a big help.

Note: Liam will be doing a simulcast web demo of inspectAR via Zoom. ​

via PCB Bring-Up Hack Chat — Hackaday

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PCB Artwork Hack Chat Transcript

The transcript has been posted from the Hack Chat last Friday with Andrew Sowa about Circuit Board artwork:

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PCB Artwork & Photo Conversions Hack Chat Transcript

PCB Art is likely as old as the manufacturing process itself. It has evolved over time from engineers hiding easter eggs in wasted space to whole companies devoted to the intricate authentic design. Andrew has created his own style by using each layer of the PCB to make multi-color images from computer generated designs.  In this chat he will talk about his process of turning photos into PCBs as well as tricks to getting high resolution results with KiCad.

 

In this chat, we’ll be talking about PCB artwork:

  • Bitmap to SVG Converstion (Inkscape and Illustrator)
  • Kicad Footprint creation
  • PCB Fabrication Limits
  • Backlighting
  • Halftones
PCB Artwork Hack Chat Transcript