Scheme description：

At present, the mainstream wireless 315/433MHz remote control schemes in the market are wireless coding schemes and RF IC schemes, among which coding schemes are favored by manufacturers because of their low cost, long distance, lower power consumption and good chip compatibility.

This scheme uses HS2353-P wireless coding chip + sound meter +8050 triode +R25 triode universal transmitting circuit. Package for SOP14, foot compatible with 153 series products, a total of 12 IO port, support triangle keyboard, up to 77 keys, can meet the majority of the market button demand.

Function description:

HS2353-P encoding chip contains 1K*14-bit OTP-ROM, which can support the commonly used 1527/2240 encoding in the market, and also support custom code and functions. More suitable for the number of keys or unconventional code requirements. The circuit adopts 3.3V long power supply scheme, the sleeping power consumption is 1uA, and the button is used to wake up.

Schematic diagram:

PCB diagram:

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