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A boffin life.

My scientific journey started in the year 2012. I started assisting my professor at college and took up a few trivial jobs in his research. Over the years, I have mastered a few subjects and I am moving ahead to learn new things. I am also interested in doing things differently and get new results. […]

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HCPL3700: 8-pin DIP AC/DC To Logic Interface Optocoupler Detect no earth easily

The HCPL-3700 voltage/current threshold detection optocoupler consists of an AlGaAs LED connected to a threshold sensing input buffer IC which are optically coupled to a high gain darlington output. The input buffer chip is capable of controlling threshold levels over a wide range of input voltages with a single resistor. The output is TTL and […]

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Using j-link with esp-idf and gdbgui for esp32

For folks who want to get started with ESP-IDF and debugging, there might be some common issues that you might face in the path of setting it up. I have found that there are a few resources to get started like: https://dzone.com/articles/eclipse-jtag-debugging-the-esp32-with-a-segger-j-l https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-guides/jtag-debugging/using-debugger.html#jtag-debugging-using-debugger-command-line etc. These are very good resources to start with. However things got […]

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Adding 128 bit UUIDS and multiple characteristics to a service in esp32 [using esp-idf]

If you are using ESP-IDF and the gatt_server demo example [https://github.com/espressif/esp-idf/tree/master/examples/bluetooth/bluedroid/ble/gatt_server] to build your custom code, then you might be wanting to do some editing like changing the 16 bit UUID to 128 bit and adding new characteristics to the existing service. I faced a few hiccups in the process but finally figured it out. […]

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Industrial grade (4.0) IoT (IIoT) with inductiveautomation (ignition) and emqx (erlang mqtt)

Mosquitto is an mqtt broker which is widely used by beginners. It can not scale on large volumes. Due to this, it can not be used in production grade environment. If you need your broker to scale with your application, you will have to choose a better MQ broker. One such production grade MQ broker […]

Read More Industrial grade (4.0) IoT (IIoT) with inductiveautomation (ignition) and emqx (erlang mqtt)