I am building a battery resistance meter based on https://www.youtube.be/W9bMmcnHi28. But I have made a few changes
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I am using a 16 2 LCD
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I have 2 ST 30l151 p40nf (transistors or MOSFETS I am not sure which)
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I am using a diode as circuit protection
I have a schematic here https://www.tinkercad.com/things/j1mpyP … dous-waasa
I have 2 problems the first is the output voltage from the MOSFET is lower than the overall voltage. The second is I don’t want the LCD to clear until the reset on A3 is pushed so that means that it needs to keep scanning for voltage until voltage is detected does anyone have any solutions for this please let me know
my_batt.txt (3.86 KB)
The video link is not working. Please check it. And I think you will get more response if you share a datasheet/photo of the transistor or MOSFET that you are using.
First, the video link is not working, secondly, the circuit link is asking for login, so please share an image of the circuit.
Moreover, as you said you are having issues with the MOSFET, try replacing it.
I always use 75N75 in many circuits and it works fine. This will help in operating this transistor: https://www.theengineeringprojects.com/ … 75n75.html
the mosfet works just fine, but the gate doesn’t seem to be opening all the way. is there a way to account for that in the coding? this should work for the video https://youtu.be/W9bMmcnHi28
Oh. I am very sorry for such a late response. Is the issue solved now?
