#Usb ir remoter serial#
#Usb ir remoter full size#

The extra capacitor footprint to use with 0.1uF capacitors was removed. The USB transceiver has an internal 3.3volt regulator that requires a 220nF (0.22uF) external capacitor (C2). A 10K pull-up resistor (R1) and a diode (D1) on the MCLR pin protect the rest of the circuit from the 13volt signal used during programming.Īn indicator LED (I) with 2K current limiting resistor (R2) displays power, USB, and infrared mode status.

The chip is initially programmed thorough a 5pin ICSP header. The USB features require a 20MHz external oscillator (Q1, C5, C6). A single power supply pin gets a 0.1uF decoupling capacitor (C1). The PIC18F2550 has gone up about $1 since we started v1, it accounts for about 50% of the price increase in v2.Įverything runs at 5volts, so power is taken directly from the USB port without regulation. 5volt parts like the 18F2550 are increasing in price, while the 3.3volt versions with more features (18F25J50) keep getting cheaper. This chip is used in lots of hobby projects that need USB, but it's starting to show its age. The 28pin PIC 18F2550 with USB is back in IR Toy v2. Schematic and PCB were designed with the freeware version of Cadsoft Eagle.

#Usb ir remoter full size#

The added cost of new parts, and the increased cost of PIC 18F2550 chips, made v2 about $2 more expensive than v1.Ĭlick for a full size schematic image. Extent the IR Toy with extra receivers, transmitters, and other parts Extra pins and infrared signals are brought to a breakout area.Infrared frequency measurement helps to identify remote control protocols, and to clone remotes with odd frequencies.Transmit range is increased by using a 100mA constant current driver circuit.IR Toy v2 has three updates that were not in the original hardware: Unused pins, including +5volt supply from USB.Access to the infrared transmitter and demodulator signals.

#Usb ir remoter serial#

Serial UART pins, can be used as a USB->serial converter.

Indicator LED, blinks on receive and indicates other functions depending on mode.

The IR Toy combines all these projects into an upgradable USB dongle, with some extra functions, like a simple logic analyzer that visualizes remote control signals. The TV-B-Gone is a popular kit that turns most TVs off by transmitting POWER codes with infrared LEDs. Serial port infrared PC remote control decoders have been popular for years, Ian published a USB version at Hack a Day. There's lots of interesting infrared projects on the web.