I2C( read as I square C) bus first introduced by Philips. Because of its simplicity and flexibility the I2C bus has become one of the most microcontroller bus system used for interfacing various IC. The I2C bus use only 2 bidirectional data lines for communicating with the microcontroller and the I2C protocol specification can support […]
Author: admin
Some time we need a square door lock or entry for security reasons. RFID card has a unique ID with 1Kb ram. We can write or read from the memory block. Let’s look at the package that available in market- The MFRC522 is a highly integrated reader/writer IC for contactless communication at 13.56MHz. Since on
The TFT module is a 128*160 matrix, controlled by the onboard Sitronix ST7735 controller IC. It is a low cost faxable LCD module. TFT stands for Thin Flim Transistor which is a display screen technique used in LCD (liquid crystal display). An active component that serves as a switch for each pixel to be switched
In this article we increase I/O port with the help of IC MCP23S17 which has 16-bit remote bidirectional I/O port with High-speed SPI interface (10 MHz). Let’s look at the Control register for addressing mode- One register (IOCON) is shared between the two ports. The PORTA registers are identical to the PORTB registers, therefore, they
The 74HC595 device has 8bit serial in parallel out shift register that feeds directly to the 8bit D type storage register. The 8bit serial shift register has its own input clock name SH_CP. The D latch 8 bit registers use pin named ST_CP for latching the 8bit shift registers output to D latch output registers.
Sometime 10bit ADC is not enough for precious calculation. In that case we have 12bit ADC i.e. MCP3208. SPI Configuration Here B11-B0 is the 12bit ADC value. Thus the operating logic consist of MCP3208 consists of following steps- Let’s use two function one is only write and other is read-write. So the full user-defined function
µC support various wire communication protocols i.e. UART or UASRT communication, SPI, TWI etc. SPI is the simplest of all communication system. In SPI data communication take place between two devices, commonly known as Master and slave. The device or devices that control the operation inside the network is known as Master and the device
Flammable Gas & Smoke Sensor- It is suitable for detecting the H2, LPG, CH4, CO, Alcohol or Propane. MQ3 sensor can sense LPG, CO, Smoke etc. For MQ3 sensor if the concentration is high the resistance decrease, if the concentration is low the resistance increase. D0 : Indicates the presence of combined gases D0
ACS712 is a hall effect-based linear current sensor that can measure both AC and DC current. Let’s look at the connection and steps to interface. For a unipolar supply voltage, it nominally remains at VCC⁄ 2. Thus, VCC = 5 V translates into V IOUT(Q) = 2.5 V. So for 0A the reference voltage is
In this program we use an LDR to read the light condition. The connection diagram of LDR as follow- LDR is nothing but a register that vary with light condition. At low light resistance is high and at high light the resistance is low. Temperature sensor LM35 is a digital temperature whose Vout value change
Light Emitting Register & Temperature Sensor LM35Read More »
Electronic Real Wrold
Visit Today : 124
Total Visit : 28777