Connecting to a wireless LAN network is a popular option for accessing internet-based applications. A readily available alternative is tethering or using a mobile hotspot, which allows the sharing of a smartphone’s mobile data to connect other devices to the internet. Most Android smartphones offer the capability to share mobile data through Wi-Fi, Bluetooth, or USB. Tethering effectively transforms a smartphone into a Wi-Fi access point, providing connectivity for laptops, tablets, microcontrollers, and low-power systems-on-chips (SoCs).
In areas with cellular network coverage, tethering offers the advantage of internet access from virtually anywhere, eliminating the need for separate data plans for each device. When password protection is enabled, tethering also ensures a cost-effective and secure internet connection across multiple devices. However, this method can significantly drain the smartphone’s battery, leading to more frequent recharging, which may reduce the convenience and flexibility typically associated with tethering.
To address the issue of rapid battery discharge during tethering, a setup utilising an ESP32 development board controlled via the ESP RainMaker app is proposed. This configuration includes four parallel systems, each operating on a separate SoC, to collect data and manage various functions during testing. To ensure continuous 24/7 connectivity, the smartphone serving as the mobile hotspot or tethering unit was physically recharged at specific intervals. A critical aspect of this setup is establishing a node through the ESP RainMaker app, which mitigates the problem of faster battery depletion in the tethering smartphone. Fig. 1 shows the authors’ prototype.
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TRULY INNOVATIVE ELECTRONICS -INNOVATION UPDATES
Amongst numerous press releases of new products received by us, these are the ones we found worthy of the title Truly Innovative Electronics
Elastomer enhancing smart wearable performance
A high-tech, flexible wearable device made from the innovative elastomer material
Nanotechnology based noninvasive cancer diagnostics
Nanoflake sensors built from indium oxide with platinum and nickel detect changes in isoprene
Space communication with silent amplifiers
In the new communication system from researchers at Chalmers University of Technology, in Sweden, a weak optical signal (red) from the spacecraft's transmitter can be amplified noisefree when it encounters two so-called pump waves (blue and green) of different frequencies in a receiver on Earth.
Advancements in TOPCon solar cells
The structure and performance of tandem devices with highly passivated TOPCon bottom cells
Quantum leap in magnetism refines superconductors
Rice University physicists have uncovered key magnetic and electronic properties in kagome magnets, structures resembling basket-weaving patterns.
Sensor targets food antioxidants
A research team from Hunan City University and Xiangtan University in China has developed a sensor for detecting TBHQ, a food antioxidant used in oils and fats, addressing health concerns at high concentrations.
Data sensing with repurposed RFID tags
UC San Diego researchers have advanced passive data collection with a breakthrough in battery-free sensing.
Seal-inspired sensors to safeguard offshore wind farms
Schematic structure of the seal whisker-inspired flow sensors
Artificial nose identifies scents accurately
Artificial nose identifies scents accurately