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1. Introduction
The decoding receiver board adopts LC oscillation circuit, which contains amplification and shaping, with four-way decoding output, and the output is a high-level signal, which is easy to use and widely used.
2. Preparation before use
| Non-locking four-way wireless remote control kit | 1 set |
|---|---|
| Dupont Line | some |
| 3mm 5mm LED Bulb Light Emitting Diode | 5 |
3. Test method
5V is connected to the positive pole of the power supply 5V, GND is connected to the negative pole of the power supply, the DO data output pin is connected to a resistor and then an LED light-emitting diode, the same is true for D1, D2, D3, and VT. The A, B, C, D buttons on the remote control correspond to the D0, D1, D2, D3 data output pins of the receiving module respectively. Press and hold the A, B, C, D buttons corresponding to the data output pin to output a high level.
4. Test Phenomenon
Press and hold the A button and the D0 data output pin outputs a high level, the LED light-emitting diode connected to D0 lights up, and the VT output state prompts the light-emitting diode to light up. Press and hold the B button and the D1 data output pin outputs a high level, the LED light-emitting diode connected to D1 lights up, and the VT output state prompts the light-emitting diode to light up. Press and hold the C button and the D2 data output pin outputs a high level, the LED light-emitting diode connected to D2 lights up, and the VT output state prompts the light-emitting diode to light up. Press and hold the D button and the D3 data output pin outputs a high level, the LED light-emitting diode connected to D3 lights up, and the VT output state prompts the light-emitting diode to light up.
Five, matters needing attention
1. The wiring should be correct.
2. Press and hold the button, the LED can not light up, it may be that the resistance of the data output pin is too large.