Electronics > Microcontrollers

Yeah.. which micro?

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DrG:

--- Quote from: DrG on December 08, 2021, 04:28:11 pm ---As a result of this thread (and maybe because I am sick of selecting holiday gifts for others), I ordered this, from Espressif and through Amazon and it is scheduled to arrive in a few days...

https://www.amazon.com/Espressif-ESP32-C3-DevKitM-1-Development-Board/dp/B08W2J9B8J

--- End quote ---

Pretty quick delivery. Hey does this count as an 'unboxing'?  ;)

tszaboo:

--- Quote from: SiliconWizard on December 10, 2021, 05:33:14 pm ---
--- Quote from: james_s on December 10, 2021, 08:55:42 am ---I wonder how they screwed up a simple ADC so badly? It's not exactly a new and exotic feature in the world of microcontrollers.

--- End quote ---

And it's not that simple either.
Many major vendors use ADC IPs they either carefully crafted over the years, or just buy existing IPs. Here they probably wanted to cut costs and had no prior experience with designing ADCs.


--- End quote ---
Typical microcontrollers run at ~80MHz, these ESP32s at 400. I guess they are using different process nodes, and they might have different analog characteristics. It could be as simple as too much ESR on an analog switch or leakage current too high on the SAR capacitors. You probably know this though.

d-smes:
As a (big) step up from ATMEGA328 boards, I went with Teensy boards which are 32-bit ARM based (48 MHz Cortex-M0+ to 600 MHz Cortex-M7).  See https://www.pjrc.com/teensy/.  They have a Teensyduino add-on for the Arduino IDE which makes migration a no brainer.  And more libraries to take advantage of modern peripherals.

Picuino:
You can use an arduino Pro Mini directly solded on your board. Cheap, tiny and accompanied by oscillator, voltage regulator, capacitors, reset button, power led.
https://www.aliexpress.com/item/32672852945.html

brucehoult:

--- Quote from: d-smes on December 12, 2021, 04:23:46 pm ---As a (big) step up from ATMEGA328 boards, I went with Teensy boards which are 32-bit ARM based (48 MHz Cortex-M0+ to 600 MHz Cortex-M7).  See https://www.pjrc.com/teensy/.  They have a Teensyduino add-on for the Arduino IDE which makes migration a no brainer.  And more libraries to take advantage of modern peripherals.

--- End quote ---

Only Teensy 3.0 and later are ARM. They started as AVR for the first few generations.

They are nice boards. They have a really slick Out-of-the-Box-Experience these days. Zero to blinky in a couple of minutes.

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