“A receiving unit for UHF radio-controls, equipped with a breakout board RX and a microcontroller functioning as a decoder compatible with MM53200/3750 and HT12 codifications.
Here we are once again to talk about systems for radio-controlling, which are useful in various situations where you need to remotely activate/deactivate apparatuses and utilizes and it is impossible or un-convenient to use cables for commands. In this case, we are proposing a receiver compatible with so many hand-sized transmitters and keyring transmitter, functioning at 434 MHz and coded using a standard encoder; these transmitters are in the history of radio controls and to this day, they are still used in applications where command doesn’t have to be strictly exclusive. Unlike the vast majority of receivers, this is not based on hybrid modules but on a monolithic integrated radio receiver section mounted on a breakout board with the decoding implemented by one of the most cost-effective and simple microchip microcontrollers. Besides, this receiver, although has four channels, does not mount relays or TRIACs in order to switch power on the utilizers, on the other hand, it only provides TTL logic levels (0/5 V) to its outputs, in order to pilot possible power boards or relay boards such as those from the Arduino environment; the choice not to mount relays comes from our goal to create a really small circuit that can be easily integrated into a wide range of devices. It was actually the need to minimize dimensions which also imposed 5 V as circuit power, the voltage used by logic section and RF section, in order to avoid adding a voltage regulator, which would have increased encumbrance.”