/products/arduino/b/blog/posts/using-spiffs-with-sparkfun-esp8266-thing-devIf you&#39;ve ever tried to use SPIFFS on the Dev version of the SparkFun ESP8266 Thing, you will quite likely have encountered the error message &quot;SPIFFS Not Defined for SparkFun ESP8266 Thing Dev&quot; as soon as you tried to upload a disk image using the ESen-USTelligent Community 12https://community.element14.com/products/arduino/b/blog/posts/using-spiffs-with-sparkfun-esp8266-thing-devTue, 17 Oct 2017 17:00:43 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:dc66390f-bb91-43a8-8cb5-7a5676b31e9fshabaz1<p>This is good information for the users of this board. I was wondering, could someone explain the product? &#39;m not sure I understand it: ( Sparkfun took the idea of a product that retails for about $3, and changed it into a $18 product by adding 2.54mm spaced holes?</p><p>Are there no adapter boards for less than this, surely any PCB manufacturer can churn out adapter PCBs for $0.10, allowing users to solder on their $3 ESP8266 boards in about 60 seconds, there are only a couple of dozen connections I thought?&nbsp; (I&#39;m not super familiar with the ESP8266, apologies if I&#39;ve misunderstood the product).</p><img src="https://community.element14.com/aggbug?PostID=3701&AppID=145&AppType=Weblog&ContentType=0" width="1" height="1">