Soil Moisture Controller DIY Kit Automatic Watering Machine Electronic Circuit Soldering Practice Loose Parts
Soil Moisture Controller DIY Kit Automatic Watering Machine Electronic Circuit Soldering Practice Loose Parts
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TJ-56-255
Condition : New
Type : Voltage Regulator
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TJ-56-255
Condition : New
Type : Voltage Regulator
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Product name: Vision Protection Circuit Reminder DIY Electronic Kit
Product model: TJ-56-255
Board size: 75*33mm
Power supply: DC 5V
Product description:
The soil humidity controller detects the soil humidity through the soil humidity sensor (fork circuit board). The soil humidity sensor is in a non-conductive state in the air. After being inserted into the soil, the more moisture in the soil, the lower the resistance on the two terminals of the humidity sensor, and vice versa, the greater the electrical resistance. The signal of the sensor is connected to the control circuit through the J2 probe interface. The resistance R2 is connected in series on the humidity probe, and the change of humidity will be reflected as the change of the reverse input voltage of the voltage comparator U1A. If the voltage is lower than the same input voltage of U1A, the comparator will output a high level, and vice versa. The capacitance C2 is a stable output signal to prevent the relay frequency from acting when the humidity is detected to be in a critical state. The self-locking switch J3 is used to control the action mode of the relay (whether the high level pull-in relay is output at the U1A pin or the low level pull-in relay is output at the U1A pin). Pay attention to the direction when installing the self-locking switch. There is a raised short vertical line on one side of the self-locking switch. This mark should be consistent with the short line side of the installation position on the PCB. The adjustable resistor R3 is used to adjust the humidity control value. The relay output terminal J4 can be used as the electrical switch of some high-power electrical appliances, such as water pumps, spraying and other machinery. So as to realize automatic control. LED D1 indicates the power supply of the control panel, and D2 indicates the relay closing action. The transistor Q1 can be regarded as a non-gate.
Note: J1 is the DC 5V power input, J2 is the humidity sensor probe input, J4 is connected to the internal action switch of the relay, the middle is the common terminal, one end is normally open, one end is normally closed. It can be used as a switch for high voltage (~220V), high power electrical equipment, please pay attention to the upper limit of the specific voltage and power that can be supported to observe the parameters on the relay shell, and it is strictly prohibited to use it beyond the limit.
Circuit diagram:
Package includes:
Product model: TJ-56-255
Board size: 75*33mm
Power supply: DC 5V
Product description:
The soil humidity controller detects the soil humidity through the soil humidity sensor (fork circuit board). The soil humidity sensor is in a non-conductive state in the air. After being inserted into the soil, the more moisture in the soil, the lower the resistance on the two terminals of the humidity sensor, and vice versa, the greater the electrical resistance. The signal of the sensor is connected to the control circuit through the J2 probe interface. The resistance R2 is connected in series on the humidity probe, and the change of humidity will be reflected as the change of the reverse input voltage of the voltage comparator U1A. If the voltage is lower than the same input voltage of U1A, the comparator will output a high level, and vice versa. The capacitance C2 is a stable output signal to prevent the relay frequency from acting when the humidity is detected to be in a critical state. The self-locking switch J3 is used to control the action mode of the relay (whether the high level pull-in relay is output at the U1A pin or the low level pull-in relay is output at the U1A pin). Pay attention to the direction when installing the self-locking switch. There is a raised short vertical line on one side of the self-locking switch. This mark should be consistent with the short line side of the installation position on the PCB. The adjustable resistor R3 is used to adjust the humidity control value. The relay output terminal J4 can be used as the electrical switch of some high-power electrical appliances, such as water pumps, spraying and other machinery. So as to realize automatic control. LED D1 indicates the power supply of the control panel, and D2 indicates the relay closing action. The transistor Q1 can be regarded as a non-gate.
Note: J1 is the DC 5V power input, J2 is the humidity sensor probe input, J4 is connected to the internal action switch of the relay, the middle is the common terminal, one end is normally open, one end is normally closed. It can be used as a switch for high voltage (~220V), high power electrical equipment, please pay attention to the upper limit of the specific voltage and power that can be supported to observe the parameters on the relay shell, and it is strictly prohibited to use it beyond the limit.
Circuit diagram:
Package includes:
