This is a high tech Business Card that you plug directly on USB. There is a ATtiny85 microcontroller on the business card that becomes an USB keyboard pre-programmed to type out text when it detects that CAPS-LOCK has been pressed a few times. V-USB is used so that the ATtiny85 microcontroller can become an USB keyboard.
USB Business Card - [Link]
This project is a USB thermometer able to measure indoor and outdoor temperature. It’s a simple device able to demonstrate the USB peripheral on the PIC 18Fs. Device is using the 18F2550 28 pin microcontroller. Data is available to the PC through a virtual serial port.
USB Indoor / Outdoor Thermometer – [Link]
This project is a portable USB charger that uses a high efficiency switching regulator that runs at 85 – 94% efficiency depending on input voltage and load. It takes an input voltage from 8 to 16 volts and can run from anything from a 9 volt battery to a car battery. It also has 2 USB ports and easily charges 2 power hungry devices at once.
Dual USB Charger using LM2678 – [Link]
This project is an Infrared USB remote control keyboard based on PIC18F2550 microcontroller and TSOP4838 IR receiver module. Software is written on MikroC. IRK! enables you to use your LEARNING remote control to control any system that you can plug a USB keyboard into.
IRK! Infrared RC USB Keyboard – [Link]
This project is a USB IR remote controller for your PC. This receiver is based on PIC18F2455 and is plug and play. It receives, decodes signals from a remote control and emulates the received signals as keystrokes in a keyboard. It is recognized as a USB keyboard. It is compatible with Sony SIRC 20 bit protocol,works with LG and SKY universal remotes when they are configured as Sony DVD. [via]
USB IR remote control using PIC18F2455 - [Link]
This project is an Inductance and Capacitance Meter using Microchip’s PIC18F2550 connected to USB. Source code is available on the link below.
PIC18F USB LC Meter – [Link]
V-USB is a software-only implementation of a low-speed USB device for Atmel’s AVR® microcontrollers, making it possible to build USB hardware with almost any AVR® microcontroller, not requiring any additional chip.
V-USB: A Firmware-Only USB Driver for Atmel AVR Microcontrollers – [Link]
USB is very common interface today. If you look around, many of devices today comes with a USB port. Computers, printers, routers, usb keys, etc. All this devices have a USB controller inside. These devices can be divided in two groups:
– USB Host (like a computer, routers, modern LCD TV’s);
– USB Device (like flash drive, mouse, keyboard);
Most of hobby electronic projects still are in RS232 serial communications world. Think in that great market,
Microchip create a very smart line of microcontrollers, USB capable, to move your projects to future. They have great introductory kits, one of them is the “Low Pin Count USB Development Kit”.
USB Low Pin Kit - [Link]
This project is a slide-show forward/backward button in the size of a USB-key.
Those old slide-projector had normally a handy button with a cable where you could advance to the next slide or go one back. I was looking for something like that. I have tried to use a USB wheel mouse but it is not the same. You click accidentally on the wrong button and you get a context menu or you scroll too many slides at once.
A USB slide show presenter – [Link]
This project shows how to build a GPIB to USB Converter named Pic-Plot2. With this unit you are able to obtain the screen plots of a GPIB instrument to the screen of a laptop without complex software, following this low cost solution. The interface is based on a PIC16F628 microcontroller and an FT23R chip. Check schematics and software on the link below. [via]
Pic-Plot2: GPIB to USB Converter – [Link]