Quote:
Originally Posted by fmnotes
In one, the company's machine, the original one, that is, I use the alkaline batteries recommended by the company. In the second device I made I have an external power supply and I feed it with a battery that is hung on the shoulder, with a cable that I connect externally to the detector machine.
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That is great. So you have more working time on field!! I think i made a mistake on using an lm7809 instead of 317 like in the original. When i have the potentiometer at the edge of detection, then when it finds a target it starts beeping for ever until i turn the pot at a lower level. It is so annoying!!