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USB - Relay Board
Posted on Friday, April 9, 2010   •   Category: USB Circuts


Here is the new 6 channel relay USB board to switch different devices, lighting or motors by a computer program via the USB interface.


MAX3420 – Maxim USB Peripheral Controller
Posted on Thursday, April 8, 2010   •   Category: USB Circuts


The MAX3420 is a USB peripheral controller chip with an SPI bus. This page hopefully contains enough information to help you easily make use of the device in your projects. The MAX3420 provides a very simple approach to adding a USB interface to a circuit. It uses a SPI bus to connect to your system. It does require a reasonable amount of configuration and control, so you’ll need to connect it to some form of microprocessor/microcontroller.


USB audio DAC
Posted on Thursday, April 8, 2010   •   Category: Audio DAC


This is a simple USB Audio DAC based on PCM2902 chip from Texas Instruments. The power is drawn directly from USB port. Circuit includes DAC and ADC, SPDIF outputs, input and HID part with 3 buttons for MUTE, VOL+ and VOL-.


USB Device Charger
Posted on Thursday, April 8, 2010   •   Category: USB Circuts


With this tiny thing you can charge almost all devices that are charged via USB, like iPods or mobile phones, with only two AA-Cells.


2-Channel IR Relay Controller
Posted on Thursday, April 8, 2010   •   Category: Remote Control


This project is a 2 channel infrared (IR) remote controlled relay driver with power saving. It works with 12-bit SIRC IR signals as used by Sony remote controls. The board uses Microchip's low cost PIC10F200 microcontroller along with a handful of easy to find components making this possibly the lowest cost remote controlled relay driver around. The controller also features a power save feature which reduces the relay holding voltage to 50% of the relays nominal operating voltage once the relay has switched on.


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