Today, four TeensyWiNos powered by LiPo batteries (2x850mA.h, 2x1600mA.h) have been powered up, running the code on this tutorial. The goal of this experimentation is to determine the lifetime of a battery-powered TeensyWiNo using sleeping states.
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This video illustrates some applications using TeensyWiNos.
MQTT (MQ Telemetry Transport) is an ISO standard (ISO/IEC PRF 20922) publish-subscribe-based messaging protocol for use on top of the TCP/IP protocol. Topics All messages in MQTT are organized into a tree structure. This is an example : room/kitchen/sensor/temperature/1 room/bedroom/sensor/door/3 In MQTT you can use wildcards on topics. There is two wildcards : “+” : […]
The TeensyWiNo shield does not embed an integrated antenna: connecting an antenna to the TeensyWiNo shield is mandatory. Always connect the antenna before powering the TeensyWiNo. Using a TeensyWiNo without antenna can destroy the hardware. There are 3 antenna options: connecting a SMA antenna via the 18cm UFL pigtail in the kit, soldering a 1/4 […]
The TeensyWiNo radio range depends on: the antenna, the transmission power and the modulation, the environment: outdoor, indoor (walls, etc.). See the TeensyWiNo antenna tutorial to choose the appropriate antenna. You may also set the appropriate txPower and modulation. With the following configuration, a indoor range of 30m can be achieved with the DIY spring […]
The TeensyWiNo shield embeds a RGB (Red Green Blue) LED. This tutorial explains how-to use this RGB LED to light colors on the TeensyWiNo. Hardware As we can see on the TeensyWiNo wiring, the RGB LED is wired on pins 5, 6 and 23. Red color: pin #23 Green color: pin #5 Blue color: pin […]
This tutorial details the steps to install the software development tools for programming the TeensyWiNo and DecaWiNo. Two methods can be used: Arduino IDE + TeensyDuino PlatformIO Arduino IDE + TeensyDuino Follow the steps indicated on the TeensyDuino Download Page on PJRC website. Don’t forget to check the last version of the Arduino IDE supported […]
The TeensyWiNo includes a Luminosity Sensor, a TSL2561. To use this sensor, use the libraries Adafruit_Sensor and Adafruit_TSL2561 as described in the Documentation. The library works out-of-the-box, except that you must change TSL2561_ADDR_FLOAT to TSL2561_ADDR_LOW. It will modify the I2C address used. We can have three TSL2561 on the same I2C bus. Then use the […]
The transceiver present on the TeensyWiNo is a HopeRF RFM22b (datasheet). The RadioHead RH_RF22 examples must be modified to be executed on the TeensyWiNo board: Teensy SPI clock pin must be set to pin #14 Teensy SPI CS pin must be set to pin SS Teensy SPI IRQ pin must be set to pin #9 […]
The TeensyWiNo embeds a triple-axis accelerometer and a digital compass (magnetometer) bundle in the same component : the LSM303CTR made STMicroelectronics. It as a I2C component that allow you to to measure acceleration or direction towards the center or the earth (by measuring gravity), and measure magnetic force in order to locate magnetic north. What […]