Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

ESP8266: A $5 microcontroller with wi-fi that runs Python

makezine.com

Post reply on HN
Print view View original

1–10 of 81 posts

Re: ESP8266: A $5 microcontroller with wi-fi that runs Python

#3

Post by megous »

headgasket wrote: post #2

cool chip! I can't find the SRAM size, anybody has an idea? https://nurdspace.nl/images/e/e0/ESP8266_Specifications_Engl... EDIT: 2015 article, maybe put that in the title?

Very little, around 60kB free if writing programs in C language.

Re: ESP8266: A $5 microcontroller with wi-fi that runs Python

#5

Post by windexh8er »

headgasket wrote: post #2

cool chip! I can't find the SRAM size, anybody has an idea? https://nurdspace.nl/images/e/e0/ESP8266_Specifications_Engl... EDIT: 2015 article, maybe put that in the title?

64 KiB of instruction RAM, 96 KiB of data RAM https://en.wikipedia.org/wiki/ESP8266

For whatever reason the Make dead-tree-edition of the original article posted has a "Table of Boards" in it and they list the ESP8266 as having 1MB of "Memory".

It's also a new article. It's recently run in the February/March 2016 edition of Make: Super (Cheap) Computers.

Edit: While the OPs link is not the new article, it is in the current edition of Make. I was /confused as I had picked it up in the airport and was looking into the ESP8266 referenced in it.

Re: ESP8266: A $5 microcontroller with wi-fi that runs Python

#7

Post by simcop2387 »

windexh8er wrote: post #5
headgasket wrote: post #2

cool chip! I can't find the SRAM size, anybody has an idea? https://nurdspace.nl/images/e/e0/ESP8266_Specifications_Engl... EDIT: 2015 article, maybe put that in the title?

64 KiB of instruction RAM, 96 KiB of data RAM https://en.wikipedia.org/wiki/ESP8266 For whatever reason the Make dead-tree-edition of the original article posted has a "Table of Boards" in it and they list the ESP8266 as having 1MB of "Memory". It's also a new article. It's recently run in the February/March 2016 edition of Make: Super (Cheap) Computers. Edit: While the OPs link is not the new article, it is in the c…

The 1MB is likely referring to the SPI flash device that the ESP-01 modules use. Many of the other boards feature larger SPI flash chips up to 4MB, and I believe it's possible in theory to boot of an SD card with them too if you remove the flash chip.

Re: ESP8266: A $5 microcontroller with wi-fi that runs Python

#9

Post by kickscondor »

The ESP also runs Lua (by way of NodeMCU), JavaScript (Smart.js, Espruino and JerryScript), Lisp (https://github.com/yesco/esp-lisp) and even a form of BASIC (http://www.esp8266basic.com/language-reference.html). I'm sure more are out there - seems like something new pops up every few days.

Re: ESP8266: A $5 microcontroller with wi-fi that runs Python

#10

Post by simcop2387 »

thechut wrote: post #6

While this is a very cool chip for hobbyists, it is quite hard to do real TLS with this chip making it basically useless for commercial applications. It CAN do TLS but it leaves very little left over if you have any kind of real business logic.

TLS is one of the reasons I'm really hopeful for the ESP32 that's supposed to have a good bit of hardware help for doing TLS and such. http://esp32.net/
Post reply on HN