EXASUB

Author: Abhay Kant

  • How to use 2.8 inch LCD driver on Mini Stm32 V3.0 using STM32CubeIDE

    To use the 2.8-inch LCD. I first checked the hardware schematic to find out all the pins attached to the LCD. The LCD has a driver ic on its flex cable. when I read the device code from the IC. The IC is ILI9325 You can check this post here for that Mini STM32 V3.0…

  • Tiny2313 Dev Board

    This is a Tiny development board I made. It is a small size and is ideal for quick prototyping. I made for the Attiny2313 microcontrollers. I started programming with this microcontroller board. Back then I did it on a breadboard. But since now I can know a few things about PCB etching I made this…

  • How to make single-layer PCB using Dry Photoresist Film Etching Method

    There are various methods to create PCBs, and using dry photoresist film offers a convenient and cost-effective solution. The step-by-step process of making a PCB using dry photoresist film. Materials Needed: Step 1: Design and Print the PCB Layout In the image below you can see the PCB. I first designed the layout and then…

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  • How to setup ESP32 on Arduino IDE

    Prerequisites: Before we dive into the setup process, there are a few things you’ll need to gather: Now that you have everything you need, let’s get started with the setup process. Step 1: Install the ESP32 Board in Arduino IDE: Step 2: Select the ESP32 Board: Step 3: Choose the Correct Port: Step 4: Upload…

  • How to use Neo 6m GPS Module with Raspberry Pi Pico

    Connect the GPS module to the Raspberry Pi Pico as follows: Note: Since Raspberry Pi Pico operates at 3.3V logic level, you can directly connect the GPS module without voltage level shifting. The module will output something like this $GPRMC,103255.00,V,,,,,,,180523,,,N*70 $GPVTG,,,,,,,,,N*30 $GPGGA,103255.00,,,,,0,00,99.99,,,,,,*66 $GPGSA,A,1,,,,,,,,,,,,,99.99,99.99,99.99*30 $GPGSV,1,1,01,18,,,31*73 $GPGLL,,,,,103255.00,V,N*4A These are the NMEA messages. by decoding these messages we…

  • Voltage Divider Calculator

    Input Voltage (Vin): Output Voltage (Vout): Resistor 1 (R1)(Ω): Resistor 2 (R2)(Ω): Calculate Missing Value Note: Enter resistance values in Ohm. Do not use kilo ohm. convert to ohm and then use. Enter voltage values in fraction or in decimal. Do not use something like 3v3 or 5v5. Convert it to fraction and then useExample…

  • Interfacing an external +5V power supply with Raspberry Pi Pico

    From the section 4.5 Powering Pico of the official Raspberry Pi Datasheet. I have decided to use the first method which is suggest to use a schottky diode with the VSYS pin. I have used 1N5819 Schottky diode.which hasVRRM = 40V,Maximum average forward rectified current IF(AV) = 1A The schottky diode and the diode on…

  • How to use button with Raspberry Pi Pico using micropython

    The Pico has internal pull up /down circuits inside it. I have made this simple circuit for demonstration. Button could be connected in two ways. In the schematic i connected a button to GP22 using a external pull up of resistor 10k. I also used a capacitor in parallel with the button to debounce the…

  • How to use GPIO of Raspberry Pi Pico as Output Pins

    One of the most important features of the Raspberry Pi Pico is its General-Purpose Input/Output (GPIO) pins. These pins can be used to control external devices, such as LEDs, motors, and relays. The Raspberry Pi Pico has 26 GPIO pins, numbered from GP0 to GP25. Each pin can be individually programmed to perform a specific…