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 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.
I started the test after building this test environment:
Three Energizer max AA cells power the IoT Node. Normally the IoT Node sleeps.
After pressing the reset button the IoT Node is connecting to the home network via Wifi, measured the battery voltage, and send a message to IFTTT.
There are two IFTTT receipts. One sends a Twitter direct message (to me) and the other makes an entry into a Google spreadsheet. Follow the link to see decharging my power pack by this IoT button app.
To reduce the power consumption of my IoT button it must go into sleep mode after sending its message. I measured a current consumption of about 100 μA in sleep mode w/o any hardware changes. To get further reduction of current consumption you can remove the LED at pin D0 (GPIO16), for example.
Continue reading “IoT Button (2nd)”
Amazon introduces its Dash Button to order much needed goods. But there are alternatives. Two of them are bt.tn and flic.
bt.tn and flic are just what the name suggests: connected push buttons that can trigger actions. Together with IFTTT they can trigger a growing number of services. Relating to the connectivity bt.tn and flic differ.
The bt.tn has built-in internet connectivity and needs no smartphones or apps to pair with. Flic uses a Bluetooth low energy connection to an Android or iOS smart phone and the flic app for network connection.
These offers are interesting to experiment with. But, we can build such an IoT Button by yourself and save a lot of money.
D1 mini combined with an 1-Button shield is one solution. You can buy both for $ 4.99 from Aliexpress.
IFTTT offers channels for bt.tn and flic. IFTTT’s Maker Channel allows you to connect IFTTT to your personal projects like this IoT Button.
This time my IoT Button sends a Twitter Direct Message after pressing it. It’s a starting point to test the mechanism.
The configuration of IFTTT is well documented and should be no problem.
For a door contact application step-by-step instructions for IFTTT setup are in my book “IoT Node for les than 15 $”.
This time I work on reducing power consumption to get a battery-powered solution.