Bit-banging SPI control for cascaded shift-registers

One year ago, i worked on bit-banging SPI control for three cascaded serial-shift registers. Practically in this example, that is something from which you can control large number of leds like 10x12 = 120 by using just 3 pins (except power supply). In the circuitary for led, i have used high side as well as … Continue reading Bit-banging SPI control for cascaded shift-registers

Water-level detector for plants

  Well after losing my favourite plant as  a gift, that also because of irregularity in watering the plant ( I do accept my mistake). I decided to make a simple indicator for water level in soil for plants. Basically, it a kind of minor project in college academics , in which i have to … Continue reading Water-level detector for plants

RFID reader on Arduino with LCD display

This post is in continuation to RFID Reader with Arduino. We can append previous post's code to display the output to LCD display module instead of serial monitor. To do so, we will just pass the final output of "msg" to lcd.print argument. Requirements Arduino                        :- i am using Arduino Uno 16x2 Display module :- … Continue reading RFID reader on Arduino with LCD display

RFID Reader with Arduino

RFID stands for Radio-frequency identification. It is the wireless use of electromagnetic fields to transfer data, for the purposes of automatically identifying and tracking tags attached to objects. The tags contain electronically stored information.   On the basis their power source they are of two types :- Active RFID:- It uses an internal power source … Continue reading RFID Reader with Arduino