SPI bus line tested and analyzed
#SPI
#bus communication
#serial protocol
#data transfer
#microcontroller
#embedded systems
#digital communication
#peripheral interface
#protocol analysis
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POWER LINE MODEM FOR COMPUTER CONTROL
This circuit employs an 87C57 microcontroller along with several peripherals to convert X-10 power-line carrier-code formats from a personal computer for use with an X-10 power-line interface in a home-control system. Software details can be found in the reference.
The circuit...
Data Transfer interface
The DS protocol was designed to provide firmware-based bidirectional host-to-slave inter-processor communications for situations in which no hardware solution is available and the host and/or the slave is incapable of tending the interface in real-time. The only specialized hardware required...
SPI
Increasingly, serial bus systems are favored over parallel buses due to their simpler wiring. As the efficiency of serial buses improves, the speed advantage of parallel data transmission becomes less significant. SPI devices can operate at clock frequencies reaching several...
DIAL ALARM-1
This is the lowest cost dialing alarm on the market and shows what can be done with an 8-pin microcontroller. The complete circuit is shown below. You cannot see all the features of this project by looking at the circuit...
spi flash programmer circuit diagram
The image below displays the schematic diagram of the SPI Flash programmer hardware interface. Power for the interface can be supplied using either a 9V DC adapter or a 9V battery. The 74HCT367 integrated circuit (IC) buffers the adjacent port...
Talking Yoda head
The talking Yoda head consists of a Yoda mask and a microcontroller system to achieve the desired operation/effect. The basic operation of the project was specified as follows: The head was to be placed inside a closed box. Upon opening...
Eight-digit-microprocessor-display
The display interface utilizes the ICM7218A/B in conjunction with an 8048 family microcontroller. An 8-bit data bus (DBO/DB7-IDO/ID7) facilitates the transfer of control and data information to the 7218 display interface during successive WRITE pulses. The mode input pins on...
integrated circuit Improving absolute precision of ADC to balance battery voltage
Utilize a high-performance microcontroller (Piccolo TMS320F28035, 12-bit resolution, +/- 4 LSB offset, +/- 60 LSB gain) to measure the voltage across stacked battery cells and control related analog electronics for charge equalization. The microcontroller will also save data in EEPROM...
Night Light Saver
A Microchip PIC12C508 8-pin CMOS microcontroller controls a night light, turning it on and off at preset times every day. It is designed to save energy, produce no electromagnetic interference (EMI), and operate without batteries, featuring a built-in lamp fixture...