MC68705 Programmer Circuit | Next Electronics

POWER LINE MODEM FOR COMPUTER CONTROL circuit

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...

EPROM Programmer Mk2

This design was never completely finished, so consider it to be in the very early experimental stage. I don`t sell kits, programmed PLD`s, or provide support for this project, and I will never be published. But if you want to...

Experimental I/O board for microcontrollers

For beginners experiencing similar challenges, a general-purpose I/O board is recommended to minimize prototyping time and maximize space on the breadboard for projects. The construction of this board is straightforward. Basic I/O devices can be soldered onto a general-purpose perforated...

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...

Multitasking Pins

It is entirely logical that low-cost miniature microcontrollers have fewer pins than their larger counterparts, sometimes too few. Consideration has been given to how to economize on pins by making them perform multiple functions. One approach is to exploit the...

microcontroller Generate a reset signal from a falling edge trigger

The microcontroller design features the microcontroller (MCU) in hibernation mode, which can only be awakened by a pulse (high-low-high) signal on the reset pin (active low). An accelerometer or an external real-time clock (RTC) serves as the wake-up source. The...

eprom schematics

Electronic Project EPROM Emulator. This EPROM Emulator was designed to complement the EPROM Programmer (Mark 2). The EPROM Emulator serves as a versatile tool for testing and developing electronic circuits that utilize EPROM (Erasable Programmable Read-Only Memory) chips. This device allows...

Driving circuit schematic

The driving circuit depicted in Figure 18-12 consists of a connection between the driving portion, the microcontroller, and the air conditioning operation components of the bridge. The microcontroller's digital signal levels from ports P4.0 to P4.3 (approximately 12 feet) and...

mosfet Turning a microcontroller on with a flip flop

The objective is to control the power to a load, specifically an 8051-based microcontroller (uC), using two switches. When the uC is powered on, it sets the PWR pin high. Upon pressing the switches again, pin 4 of the flip-flop...