Miniaturization is a process for shrinking structures while maintaining the function and possibly also the shape. In technology, this means the continuous reduction of various components of technical devices. It has been a target of many developments in science and technology for about three decades. As driving moments, desires for increasing performance and speed are most important, as well as … [Read more...]
Arduino : Independently Blink Multiple LED
A practical question which comes up every day is how to blink two LEDs at different rates? That simply means an independent control on each LED. That small wish is a big jump to visual animation. In real life, the multi-coloured Christmas lights (aka Dewali lights) blinks in that fashion to give us a great feel. Problem to most of the beginners is with the usual "blink" tutorial program … [Read more...]
What is SoftAP Mode?
SoftAP is the abbreviation for "software-enabled access point". A softAP is a virtual router made by software which enables the user to configure the headless device by the user. SoftAP is a common way to set up Wi-Fi devices without the need to enter data/credentials directly, such as a security camera, smart socket and other smart home appliance or any other IoT devices. This process can work … [Read more...]
What is Narrowband IoT?
Narrowband IoT is a radio technology standard with a focus on the coverage of enclosed spaces, low cost, long battery life, and high connection densities. NarrowBand-IoT - also known as LTE Cat NB1 - is a standard-based wireless technology that originates from the family of Low Power Wide Area Networks(LPWAN). NB-IoT is a type of Low Power Broadband Network which uses a standard LTE network … [Read more...]
DIY Smart Plug vs Commercial Smart Plug
IoT stuffs changed the management of our country houses. Today, we can control the external lights from other house and can view the live videos via connected security cameras. Thieves and animals avoid houses which seem to be under control under human. Light-dependent resistor control and motion sensors alone are not great to exert the effect of human control of the house from a different house. … [Read more...]
Pikocube : ESP8285 MCU Powered PCB LED Cube With Gyroscope
Pikocube is a funny, geeky LED cube dice project with 54 LEDs, gyroscope and Wi-Fi-control made by maker Moekoe from Germany. The dice consists of an ESP8285-01F MCU, six PCBs, a 150mAh lithium battery and charging circuit, an ADXL345 gyroscope, and 54 LEDs. Its structural design is quite clever. Of course, the project is open source with all the files available. However, it is not among the … [Read more...]
EZVIZ C6CN IP Camera Review and Tips
EZVIZ C6CN is a motorized indoor internet camera which supports single unit usage as well as NVR, local storage, cloud storage, over-the-internet remote viewing and has video management software for Android (you'll get on Google Play) and Microsoft Windows (EZVIZ Studio is the name of their Windows app). EZVIZ is a sub-brand of HIKVision to deliver "smart" cloud-based security cameras. You can … [Read more...]
Top 6 Things You Can Do with a Chromecast Device
Once you get to know the uses of the Chromecast device, you won't be able to live without it. At first, you may be doubtful if your purchase would be worth it. Plus, you don't really know what it could accomplish. You should invest in this device without any doubts as it is extremely useful when you want to project your phone onto your smart TV. This gives you a great TV experience and valuable … [Read more...]
Temperature Sensor Using NTC Thermistor (Arduino/NTC)
A thermistor (THERMally sensitive resISTOR) is an electrical resistance whose value changes with the temperature. Thermistors are divided into two groups, hot conductors which have a negative temperature coefficient (NTC), conduct electrically in a hot state better than in the cold state and cold conductors, which have a positive temperature coefficient (PTC) and conduct better electrically when … [Read more...]
IoT Based Pulse Oximeter With ESP32, MAX30102 and IBM Watson IoT
Pulse oximeters are in use since long during an operation, in intensive care, in the emergency room and other places such as in unpressurized aircraft. The COVID-19 pandemic made pulse oximetry technology for the consumers. Most of the finger pulse oximeters in the market lack BLE and Wi-Fi. There are only a few finger pulse oximeters which have a BLE to transmit data to the smartphone. Having a … [Read more...]
ESP32 MAX30102 Pulse Oximeter Code
In the previous guide of MAX30102, we have shown a test code with the MAX30102 module build/sold by Maker Focus mounted on a MH-ET LIVE breakout board. Our two challenges are - ESP32 is not exactly same as Arduino UNO and the good looking MH-ET LIVE breakout board is not same as the MAX30102 module sold by Sparkfun. As we commonly use the MAX30102 sensor library by Sparkfun, we need to guess which … [Read more...]