• What is LoRa Network?

    09/15/2025 at 12:53 • 0 comments

    Are you looking for a cheap wireless solution? Maybe LoRa is right for you. It stands for Long Range, and is a patented digital wireless data communication technology. It's a type of low-power wide-area network (LPWAN) modulation technique that operates on unlicensed sub-gigahertz radio frequency bands. LoRa is known for its ability to transmit data over long distances with minimal power consumption, making it ideal for battery-powered devices in Internet of Things (IoT) applications. 📡

    Meshtastic is an open-source project that allows you to create your own off-grid, long-range communication network. It uses inexpensive, low-power LoRa (Long Range) radios to send text messages and GPS data without the need for Wi-Fi, cell service, or satellites.

    I have used LoRa for a refrigelator temperature sensor. The problem with this sensor is that the battery life is only last for 2 months.

  • How does RISC-V works?

    09/12/2025 at 19:14 • 0 comments

    Are you a hardcore programmer? Then implementing a RISC-V processor on an FPGA is right for you. It involves using the programmable logic to create a "soft core" of a RISC-V CPU. Instead of using a fixed, off-the-shelf processor, designers can instantiate a RISC-V core, available as hardware description language code like Verilog or VHDL, within the FPGA. 

    The existing FPGA implementations are:

    - RISC-V CPU: https://github.com/lnis-uofu/OpenFPGA

    - Java VM: https://github.com/amal029/jop

    We can implement GPU on FPGA, it can be effectively used for the custom hardware accelerators for graphics processing, offering advantages in low latency, and integration for specific applications.

  • How to build a 3D Printer?

    09/11/2025 at 08:52 • 0 comments

    Are you a 3D designer? Then a 3D printer is right tool for you. It is a machine that uses additive manufacturing to create three-dimensional objects from a digital design. Essentially, it builds an object by depositing plastic filament layer by layer. 

    Ramp 1.4 schild for Arduino Due. See the KiCad design here: https://gl.tetra.nl/xuyi/niceramps

    Safety issues of 3D Printers:

    A SCARA robot (Selective Compliance Assembly Robot Arm or Selective Compliance Articulated Robot Arm) is a type of industrial robot known for its high speed, precision, and application in assembly and pick-and-place operations.