New IoT Toy – ESP8266

I’m very excited to try out this new chip. This is the EspressifESP8266. A super cheap (approx. $3-4 CDN) and very small SOC with built in WiFi. It’s somewhat similar to the Spark Core that I already have, though not quite as refined and minus the cloud access. The ESP8266 was released early 2014 but didn’t really show up on my radar till about August 2014. I dismissed it initially as there was very little documentation out on the internet. But then I checked up on it again in December and I was amazed by the ever growing number of follower. New documentation was created, existing stuff had been translated (mostly) and there were plenty of project already in the works. I decided to buy three of these on eBay from user “czb6721960“.


  • 11 b/g/n
  • Wi-Fi Direct (P2P), soft-AP
  • Integrated TCP/IP protocol stack
  • Integrated TR switch, balun, LNA, power amplifier and matching network
  • Integrated PLLs, regulators and power management units
  • 11b mode + 19.5dBm output power
  • Built-in temperature sensor
  • Antenna diversity support
  • Power down leakage current of <10uA
  • Integrated low power 32-bit CPU (could be used as application processor)
  • SDIO 1.1/2.0, SPI, UART
  • STBC, 1×1 MIMO, 2×1 MIMO
  • A-MPDU & A-MSDU aggregation & 0.4ms guard interval
  • Wake up and transmit packets in < 2ms
  • Standby power consumption of < 1.0mW (DTIM3)

Here is a link to the best translated english datasheet provided by NURDspace.