DIY Electronic Kit for Soil Moisture LED Light Detector
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Rigal b'xejn
Politika tat-tbaħħir
Politika tar-ritornRigal B'Xejn
Merħba għal Roymall, is-sit professjonali tiegħek għal xiri ta' rigali ta' kwalità għolja. Napprezzaw is-sapport tiegħek u rridu nuruk gratitudni billi noffru rigal b'xejn ma' kull ordni.Politika tat-Tbaħħir
Oġġetti jintbagħtu fi żmien 2-5 ġranet tax-xogħol. Ordni ta' aktar minn $9.9 jintbagħtu b'xejn.1. Politika tar-Ritorn
Oġġetti jistgħu jintirbu sa 40 jum. Oġġetti personalizzati ma jistgħux jintirbu.2.Politika tar-Rifużjoni
Ir-rimi jintirbu bl-istess metodu ta' ħlas oriġinali.When the probe is inserted into the soil, if the soil is dry, the resistance at the two poles of the probe is very high, and the base of V1 is at the low level V1, and the LED1, LED2 and LED3 are in the off state. When the soil humidity increases gradually, the resistance at the two poles of the probe gradually decreases, and V1 begins to conduct. After the current is limited by resistor R1, the LED 1 is lit. At this time, because the circuit of LED 2 is connected with diode VD1, it needs to be driven by higher voltage. Similarly, LED3 is also connected in series. Only with the humidity gradually increasing, the number of LED lights can light up more.
Specifications:
Product name: soil moisture detector
Product size: 26*48MM
Working voltage: DC5V
Package Include:
1u00d7 Electronic Kit
uff08The delivery is in parts, which need to be assembled by the buyer.uff09
