4 ms·
ESP8266s go for $1 SE Asia, and down to 0.50, or less in quantity. Different sleep modes can be programmed and the thing can run off a very small solar cell or
by eggy 11y ago
ESP8266s go for $1 SE Asia, and down to 0.50, or less in quantity.
Different sleep modes can be programmed and the thing can run off a very small solar cell or a coin battery for a year or two depending on WiFi usage, etc...
You can program to the metal too, if you want low-latency.
- yitchelle 11y agoIs that pricing just for the ESP8266 IC rather than a board with an ESP8266 mounted and ready to be used?
- lucaspiller 11y agoI've been tinkering with the ESP8266 since it came out and best board I've found so far for hobbyists is the WeMos D1 Mini. It's based on an ESP8266EX but is mounted (everything except headers are soldered) on an Arduino style breakout board with a USB-serial converter. It's $4 at retail prices from AliExpress which includes shipping. http://m.aliexpress.com/item/32529101036.html http://m.aliexpress.com/item/32529101036.html
- TeMPOraL 11y agoExcept ESP8266 is not usable unless you're somewhat proficient with electronics. Basic Arduinos you can hook up via USB. Yes, there's NodeMCU (which I very much like), but unfortunately it's not $1.
- eggy 11y agoWhat's not $1, the arduino or NodeMCU (opensource)? The price I quoted was for board with power regulator, breakout of GPIO, and WiFi (of course). You can run the Arduino IDE and serve web pages from it. Someone has created a Lisp/scheme running on it.
- KaiserPro 11y agoActually the ESP8266 is a bit more limited when it comes to low power. Yes it has sleep modes, but they are not as deep as the arduinos, and require work to make them effective.
- eggy 11y agoWhat do you mean 'not as deep as the arduinos'? There are definitely issues with coordinating WiFi and low-power usage requirements, but it offers several low-power states, that I have not had issue with so far.