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Offline bernte_one
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« Reply #100 on: April 16, 2015, 10:53:52 am »
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here some notices i have made during buildiung

replace the voltage controller lm317 with lp2950 3,3V is more stable
if you replace lm317 with lp2950  you have also to change the resistor nearby the lm317 (dividers for correct output voltage)

lp2950 needs maybe some condensators


ferrite-coil
10*50mm ferrit from that 25mm mit 4 layers 0,25-0,3mm enamled copper wire
L = 2.290µH


you can let the led off the pcb if pezo speaker with two tone sound is enough


Posted on: April 16, 2015, 10:49:13 am
some other layout

and ready unit

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my machines at work http://mueller-meteoriten.de
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I CAN MAKE PCBs FOR YOUR DIY PROJECT  offer only within EU
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« Reply #101 on: April 16, 2015, 02:14:42 pm »
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Nice build bernt_one. Which version of the hex code did you use? Can you make a video to show us how well it works?

Thanks,
Dusty Carl

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A bad day at gold prospecting or metal detecting is better than a good day at work.

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GOLDDUST CARL
Offline golddustcarl
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« Reply #102 on: April 16, 2015, 07:29:05 pm »
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Crystals came today wahoo. 3 days early. I finished the redraw of the board with proper parts orientation. Will post later, just have phone for now.

Dusty Carl

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GOLDDUST CARL
Offline golddustcarl
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« Reply #103 on: April 16, 2015, 11:03:32 pm »
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Quote:Posted by golddustcarl
Crystals came today wahoo. 3 days early. I finished the redraw of the board with proper parts orientation. Will post later, just have phone for now.

Dusty Carl


Ok I have the laptop now. Here is the updated schematic with proper operation. Sorry for all the goof ups. I had to go with one jumper or else totally change the layout. Please compare the schematic against the PCB in case I made another mistake. (Hope not)

Dusty Carl

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A bad day at gold prospecting or metal detecting is better than a good day at work.
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GOLDDUST CARL
Offline xavier
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« Reply #104 on: April 17, 2015, 07:03:08 am »
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I don't understand how your board works,  when I design a board the components are at the top and I'm looking at the bottom copper through the top of the board in others pin one of the IC is on the left, yours is on the right.

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So many questions so little time
Offline cool2010
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« Reply #105 on: April 17, 2015, 07:08:39 am »
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he changed IC rotation and made a new PCB

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Offline xavier
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« Reply #106 on: April 17, 2015, 07:15:46 am »
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That does not change the fact that pin one is on the right.

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Offline cool2010
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« Reply #107 on: April 17, 2015, 07:17:39 am »
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i think yore looking wrong PCB ..

his first version at the bottom and the second corrected version is up side...

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Offline xavier
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« Reply #108 on: April 17, 2015, 07:30:31 am »
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Pin one is still on the wrong side

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« Reply #109 on: April 17, 2015, 08:31:42 am »
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youre looking this schema and PCB ?

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