Circuit function description
1. The second signal generation circuit debugging (U3) consists of first inserting the short-circuit cap to the inch1inch and inch2inch positions of JP1, connecting the high level of VCC to the four pins of U3, then adjusting the precision adjustable resistor R22, and using an oscilloscope Observe the square wave output from pin 3 of U3, and make its frequency 1HZ. After debugging, please pull out the short-circuit cap and insert it into inch3inch and inch4inch of JP1.
2. Debug the stirring control circuit (composed of U7, U9, U4), first insert another short-circuit cap to the inch1inch and inch2inch positions of JP2, and connect VCC high level to the 3 pin of U9A, and then adjust the precision adjustable Resistor R29 loops the 11-pin output of U9D for a period of 3 seconds high and 3 seconds low. That is to make the stirring motor work in a cycle of inchforward 3 seconds & dash; stop 3 seconds & dash; reverse 3 seconds & dash; stop 3 seconds & dash; forward 3 secondsinch. At this time, the cycle of LED2 and LED3 is inchLED2 on, LED3 on & dash; & dash; LED2 off, LED3 on & dash; & dash; LED2 on, LED3 off & dash; & dash; LED2 off, LED3 off & dash; & dash; LED2 on, LED3 is on. inch After the stirring circuit is debugged normally, please pull out the short-circuit cap and insert it into inch3inch and inch4inch of JP2.
3. After the prompt tone circuit is debugged, after adjusting the second signal generation circuit and the stirring control circuit, use the keys S2 inchten digitsinch to S3 inchone digitinch to set the appropriate stirring time, and then press the start key to start stirring and counting. Stop the operation, the digital tube displays the set time, and the buzzer sounds inch2 secondsinch to indicate the end of stirring. The buzzer circuit is a circuit composed of U12 as the core component. The buzzer can be adjusted with a precision adjustable resistor R34.
4. Note:S1 is the reset button. Press S1 to reset the circuit to the initial state. If the stirring time is not set, and the start key is directly pressed for stirring, it starts from 99, and the buzzer is called to indicate that the stirring time is not set.
Package included
1 x DIY Simulation Automatic Mixer Kit
Additional information
| Weight | 0.122 kg |
|---|
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