woz_maksie
New Member
Hey all, this is my first post, and i just like to say thanx in advance
Basically im 16 and doing my GCSEs and 1 of them is electronics. Ive got a very good understanding for electronics regarding components and the workings, but after desgining my circuit and producing it, ive found that it does not work as planned
The idea of the circuit, is that it is suppose to put in the soil, of a plant pot. Then, using the op-amp, it compares the soils resistance to the referenced one. If the soil resistance is higher (this means the plant needs water) it feeds into the decade counter, the first output triggers the monostable which turns on a solenoid which controls the water for a set amount of time.
When created in Crocodile clips, my circuit worked, but after i built it, the output on op-amp was in milli volts :? (i cant remember exactly which op-amp it was, but its not a 741)
Can yall find anthing wrong with the circuit or the diagram.
Thanx for your help
Basically im 16 and doing my GCSEs and 1 of them is electronics. Ive got a very good understanding for electronics regarding components and the workings, but after desgining my circuit and producing it, ive found that it does not work as planned
The idea of the circuit, is that it is suppose to put in the soil, of a plant pot. Then, using the op-amp, it compares the soils resistance to the referenced one. If the soil resistance is higher (this means the plant needs water) it feeds into the decade counter, the first output triggers the monostable which turns on a solenoid which controls the water for a set amount of time.
When created in Crocodile clips, my circuit worked, but after i built it, the output on op-amp was in milli volts :? (i cant remember exactly which op-amp it was, but its not a 741)
Can yall find anthing wrong with the circuit or the diagram.
Thanx for your help