Difference between revisions of "ESP8266"
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Revision as of 16:57, 28 January 2015
The ESP8266 is a small, low-cost wifi-talking board. It's the new center of the Internet of Things. Originally intended as a "wifi modem", it exposes the WiFi interface over AT-style commands.
Some hackers immediately noticed there is a general-purpose microcontroller on the box, and made a firmware for it that takes Lua programs. Now you don't need another microcontroller. Sweet!
For full specs, see . Important facts:
- 3.3v *only* - 5v will let out the majikul smoke
- Some reports say 1A current draw, others say 250 mA
- Talks 802.1n, supports most major auth types.
There are a number of ESP8266 hardware versions. The ones of interest are:
- ESP1: 8 pins (basically one I/O plus power, etc.). Breadboard friendly (2.54mm), but not useful standalone
- ESP12: 16 pins (I/O, power, 9 GPIO). Non-breadboard friendly: 2mm pin spacing
Folks seem to use NodeMCU, a Lua based firmware, when using the ESP alone.
Group order 01/2015
Prices are from the same store, and are competitive within a few cents.
- ESP-12, Without breakout (Option A): $2.60 aliex
- ESP-12, with breakout board, battery socket, resistors, and power regulator (2.54mm pitch): $4.50 aliex
Put your name, email, and quantity of With and Without breakout desired.
|Naomi||naomi at nthmost||0||4|
|Dana||dsniezko at sonic net||0||3|
|Yer name||Yer email||-1||-1|