Espressif has released Hardware Design Guidelines for all of the ESP32 chips and it’s available now in HTML format. This is a treasure trove of information if you are in the hardware design phase o...

If you use the AWS IoT Core MQTT Broker you need to be aware of this very simple trick which could lead to significant savings on your monthly bill. In AWS IoT Core the way you receive and process...

Story Time… I wanted to add a super simple way for customers to reset the WiFi credentials on their puck holder devices. An easy approach, I thought, would be for them to unplug and plug it in 3 t...

I recently had some unfortunate production issues due to hard-coding a certificate in my firmware. As a result I dug deeper on TLS on the ESP32 and even after just scratching the surface I have lea...

I get this question a LOT and many of you in the community have expressed interest in knowing more about how to answer it. Which X should I use? Which cloud provider? Which chip? Which progra...

The ESP-IDF is constantly evolving and changing. As such, it’s really important that you lock your firmware code to a specific version so you aren’t caught off guard when IDF changes. Additionally,...

Time is hard. Super hard. The concept seems simple enough until you realize there are endless edge cases and exceptions to rules you thought you knew. This is especially true in IoT products where...

This post should be rebranded to “LFRM: Learn From Rivian’s Mistakes” as we’ll be learning from a massive OTA mishap they recently experienced. If you haven’t read about it, Rivian recently releas...

Storage is an important part of most embedded applications. The ESP32 supports several options for storing data such as NVS (non-volatile storage), a driver for SD card support, and filesystem supp...

This is technically not a mistake I made but it’s one I would have made and hopefully will save you the trouble as well. I have not had a scenario where this bit me but a big shout-out to Manaam Re...