IC sockets can sometimes have a problem. I had this happen to me a while ago, because I bought some turned sockets and they were of poor quality. You should also check the soldering of the electronic components, because this factor is very important.
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Arduino Nano VLF Metal Detector Project - Main Discussion
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Originally posted by Ronin0000 View PostHere is an update:
I have recived new LT1054 chips from a diffrent supplier, but unfortuantly that did not solve the problem.
I have wired the circuit standalone on a breadboard to see if my pcb was messed up, but that also did not solve the problem and the results are the same.
All of the components have been replaced at least once, and the sync pulse appears to be working when I check it through a oscilloscope.
I have tried Gunghouk's suggestion of temporarily removing the sync pulse, but that also did not change anything.
I am a little bit stumped at the moment.
Any tips would be appreciated.
Thanks
However, I can assure you that it definitely works.
One thing that strikes me as a bit odd is that you measured the +5V from the Arduino is only 4.72V.
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Originally posted by Ronin0000 View PostThe arduino nano that I am using is not a offical one. Should I buy a offical one and test it with the circuit?
The output from the Arduino Nano should be +5V.
I assume your are using either an external power supply or battery pack, and not a USB supply connected to the Arduino?
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Need Help Building a Verified LT1054 Voltage Converter
Hi everyone,
I’m still really stuck trying to get my negative voltage rails working with the LT1054. I’ve replaced all the chips and checked everything, but I still can’t generate a stable negative supply.
Could someone please build and test just the voltage-converter portion for me on a board and verify it works? I’d be able to pay for your time and cover shipping if that’s possible.
Thanks so much!
- Ronin
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Originally posted by Ronin0000 View PostNeed Help Building a Verified LT1054 Voltage Converter
Hi everyone,
I’m still really stuck trying to get my negative voltage rails working with the LT1054. I’ve replaced all the chips and checked everything, but I still can’t generate a stable negative supply.
Could someone please build and test just the voltage-converter portion for me on a board and verify it works? I’d be able to pay for your time and cover shipping if that’s possible.
Thanks so much!
- Ronin
Are you sure there is a sync pulse there?
Depending on the origin of some of these transistors they may have different pinouts than expected.
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Originally posted by kosacid View PostI did have a problem with the footprint of c10 c30 c41 the last 2 are fine but I can't find caps to fit the footprint so they are sitting on top my question is there ones that fit that footprint?
You can select by value, physical size and pitch.
They should get them to you in a couple of days
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