Simple and practical mouse remote control device circuit

This device uses the codec circuit MC145026 / MC145027 and RF launch / receiving module TDA1808 / TDA1809 to cooperate with each other. The mouse can be flexibly manipulated in the range of 10 to 120m. It conforms to the operating habits, is convenient and reliable, and is very suitable for enthusiasts to make their own. Under normal circumstances, there are 4 circuit connection lines inside the connection line between the mouse and the computer (the circuit device can accept up to 4 data lines for input, and readers can choose according to the actual situation of their own mouse), which are the positive pole of the power supply, the ground of the power supply, and the data line. 1. Data line 2. We cut the mouse connection, find these 4 lines respectively, and use the data transmission terminals D6 and D7 of the MC145026 encoding circuit to receive the data from the mouse data line 1 and data line 2, and encode it inside the chip through the radio frequency transmitting module TDA1808 is launched. After the radio frequency transmitting module TDA1809 works, it inputs the received coded information into the MC145027 decoding circuit. After conversion, the signals of the original mouse data line 1 and data line 2 are restored at the data output terminals D6 and D7 of the chip, and passed through the original mouse and The computer cable is fed into the computer. It can be seen that the above circuit does not require modification of the mouse and computer, and there is no need to install additional mouse driver software. All functions of the original mouse can still be used normally. This circuit (see Figure 1 and Figure 2) can work without debugging as long as the selected components are normal.