Epsilon Node

… seen @ Mini Maker Faire Zurich 17./18. September 2016.

A very good example for a battery-powered wireless IoT-Node. Have a look to Lambda Nodes for further information.

Epsilon Node

ESP8266 IoT Board

This ESP8266 IoT board combines built-in USB and battery charging. The ESP8266 is clocked at 80 MHz and supports 3.3 V logic.

IoT Elecrow - 1

To make it easy to use for portable projects, a connector for 3.7 V Lithium polymer batteries and built in battery charging was added.

You don’t need a battery, it will run just fine straight from the micro USB connector. But, if you do have a battery, you can take it on the go, then plug in the USB to recharge. The board will automatically switch over to USB power when its available. The board comes pre-programmed with NodeMCU Lua.

You can order this ESP8266 IOT Board [DPO82666E] from ELECROW for $12.90. Further info you will find in the ESP8266 IoT Board Wiki.


ESP8266 IoT Board

Wio Node

Wio Link now has got a little brother – the Wio Node. Two samples arrived from SeeedStudio today. Have a look to SeeedStudio’s images and compare:


Wio Link-1

Wio Node has the most of features as Wio Link. But it is cheaper, smaller and also lighter in weight.

  • An ESP8266 based open-source Wi-Fi development board (here Espressif’s WROOM-02 is used)
  • Supports Grove Sensors/Actors
  • Visual Configuration via Mobile App (Android & iOS)
  • OTA (Over-The-Air) Firmware Updates
  • RESTful APIs
  • IFTTT Application
  • Powering by Micro USB
  • Battery Holder for re-chargeble LiPo accu

Easy starting at iot.seeed.cc/start.

Wio Node

Solar-powered AM2315 sensor

Today the test unit stopped again with a LiPo accu  voltage of 2.04 V. Recharging was needed.

This test started at May, 2nd and was running 14 days. We had no good weather conditions, but the run time was below expectations. After recharging  the LiPo accu the test will be started on another location. The recharging occurs inside therefore you will see room temperature for this period in the graph. Restart at 2016-05-17 9:00.

Solar-powered AM2315 sensor