Arduino launched at the CES 2020 a new IoT Plattform – the Arduino Portenta H7.
H7’s main processor is a dual core unit made of a Cortex® M7 running at 480 MHz and a Cortex® M4 running at 240 MHz. The two cores communicate via a Remote Procedure Call mechanism that allows calling functions on the other processor seamlessly.
The onboard wireless module allows to simultaneously manage WiFi and Bluetooth® connectivity. The WiFi interface can be operated as an Access Point, as a Station or as a dual mode simultaneous AP/STA and can handle up to 65 Mbps transfer rate. Bluetooth® interface supports Bluetooth Classic and BLE.
Evaluation of the power consumption of an autonomous IoT device
The popular Arduino Uno micro-controller in combination with GSM/GPRS shields based on the SIM900 chip are quite popular as prototype platform for new developments or autonomous IoT systems. The main challenge to implement a true energy autonomous system is the considerable energy demand of this components if you use them out-of the-box. Data sheets and other supplier information give no or only limited information of the true power requirements.
An evaluation project from CADEMIS determined the energy requirements of a basic setup which might be a useful indication for the design of related IoT systems.
In order to determine the energy consumption a simple system setup was used to determine the current at a 12 Volt battery.
A control program implemented in the Arduino IDE switches between four different states:
1: GSM board OFF, Onboard LED ON
2: GSM board OFF, Onboard LED OFF
3: GSM board ON, Onboard LED OFF
4: GSM board ON, Onboard LED ON
Between the states a delay of 10 seconds was implemented in order to get a steady reading on the Ampere-meter.
Arduino Source Code:
The source code for Arduino IDE 1.6.13 to switch between the four states mentioned above:
Special remark on switching on the GSM Shield: When switching on the board (between state 2 and 3) the power consumption is between 70 mA and 220 mA for about 5 seconds. As mentioned in several posts in forums causes every switching operation a significant peak in current and power.
It is strongly recommended to switch off unused loads in order to reduce the power consumption by up almost 50% for a simple setup like this. This can double the operation-time between battery reloading or reduce the solar power requirements and costs.
Thanks to the girls and guys from Geeetech for publishing the basic information on how to control the SIM900 board:
Two additional Galileo satellites are now in space and also additional projects have started to prove the core technology. By 2019 there will be 30 satellites in space and the system ready for civil applications.
According to a report on 02elf.net two additional research activities (“automotive GATE” and “train Gate”) recently started. Goal of these projects is the development the required technology for industry applications in the area of autonoumous driving or cars, trucks and trains.
With the upcoming Internet of Things (IoT) this devleopment is essential to have a new technology available, which can succeed the older GPS. Major advantage of Galileo is the better coverage and the stronger signal, which will allow new applications in home-, industry- and laboratory-automation, due to lower energy consumption and higher precession.
Its all about big data – Clarks places iPad based devices in shoe shops to support customers and improve the shopping experience. But as a nice side effect it also collects biometric data about your feet and process this data at its headquarters in order to get information on regional trends.
Have a look at the video to get an impression about the combination of old and new technologies in today’s shoe industry.