Serial Keyboard circuit | Next Electronics

Microcontroller and Motor Driver Circuit Board

Efforts were made to minimize the number of wire jumpers on this board, but space constraints arose due to the integration of the microcontroller and motor driver on a single board. The design would have been cleaner without the inclusion...

Gibson Clavioline Keyboard Instrument (1953)

The Clavioline is an early electronic keyboard instrument, similar to the Hammond Solovox. Both instruments are monophonic (single-voiced) and tube-powered, consisting of a keyboard and an amplifier. The first image depicts a restored Clavioline, while the second shows a person...

Microcontroller

The gap between TTL (Transistor-Transistor Logic) devices and personal computers can be effectively bridged with modern microcontrollers. These microcontrollers not only incorporate a central processing unit (CPU) but also include program and data memory, EEPROM, input/output (I/O) ports, timers, and...

Robot Motor Control Schematic

The schematic for controlling the motors is divided into three main sections, each serving a distinct function. The primary components featured in the schematic include the PIC 18F252 microcontroller, the SN754410 motor driver, and 2N2222 transistors. At the top of...

FT232 USB to Serial Module

This project utilizes the FT232XX chip series, which functions as a USB to serial converter. These chips are capable of converting USB protocol into asynchronous serial protocol, effectively allowing the transformation of a USB1 port into a corresponding serial port....

USB LED Lamp Circuit using 5 Volts

A simple USB LED lamp circuit utilizing a 5-volt power supply sourced from a USB port, designed to illuminate a desktop or laptop computer during power outages. The USB LED lamp circuit operates by converting the 5-volt DC power provided by...

A serial cradle

This project is aimed at building a small circuit that fits into a standard USB Visor cradle and that adds RS-232 capabilities. Note that Handspring sells a serial cradle but if you have more time than money, do it yourself...

usb cd rom emulation

This project aims to create a USB CD-ROM device. Unlike typical devices that imitate a CD-ROM drive, this project emulates one. The concept allows users to store an ISO image or other types of CD-ROM images on an SD card,...

PS/2 Keyboard IR Receiver

A few years ago, an individual received a small wireless infrared keyboard, part number RC-KB2, intended for use with a Kenwood audio system. The goal was to explore its transmission format to create a small receiver that would enable the...