Arduino Nano PI Main Discussion

[Qiaozhi]

Dear folks,

I also ordered the Nano book and build the power supply accordingly (fig 2-2) but with a LT1054 instead. The voltage between TP1 and TP3 measures however -12V. The Arduino has the programm running. There are no other parts connected. Should I change some capacitors or add components like a 79L05 to get -5V?

Thanks in advance,

Richard

I'm not sure how you can have -12V at TP3 when the input voltage is +5V.
As surfdetector says, check the voltage at pin 8.

[Rodion]

I see now what I have done wrong! Ihe input of the voltage inverter at pin 8 is the regulated +5V from the Arduino. Before having the book, I started to explore the LT1054 and had it configured as a voltage inverter and regulator itself or as a voltage inverter only with help of external voltage regulators. The input was in these cases the +12V of the battery. Looking at diagram 2-2 again (with glasses this time) the input of the voltage inverter at pin 8 reads V+ (and not +12V). V+ is the regulated output (+5V) of the Arduino.

Thanks Qiaozhi

[Qiaozhi]

I see now what I have done wrong! Ihe input of the voltage inverter at pin 8 is the regulated +5V from the Arduino. Before having the book, I started to explore the LT1054 and had it configured as a voltage inverter and regulator itself or as a voltage inverter only with help of external voltage regulators. The input was in these cases the +12V of the battery. Looking at diagram 2-2 again (with glasses this time) the input of the voltage inverter at pin 8 reads V+ (and not +12V). V+ is the regulated output (+5V) of the Arduino.

Thanks Qiaozhi

I was wondering if that might be the problem.
Initially I assumed you were using the "official" PCB.
https://diydetector.co.uk/store/inde...oller=category

[ionut_mtb]

Long story short magic smoke came on this project, had to remove the nano as was hot every time, changed also 7660. Without arduino, i supplied 5v to 7660 and 12v to board but i don’t have -5v to output. I have 0.5v. It need to have also osc connected to work?

[ionut_mtb]

I will answer myself to this as i tested one working board of surf pi analogic. Yes, without osc from from arduino (7660 pin 7) -5v will not work.

[Emersonpaz]

Waiting for the plates, I placed an order at JLCPCB, I will start this project

[Rzouga]

Hi to all,

Finally had the opportunity to spend some time on the project, followed step by step the guidelines from the book and the videos from Surfdetector, and everything was working as expected since the first time!
Rest to do some adjustments as I used a coil from a previous project and I don't trust the damping resistor to be 100% suitable (but close enough).

I have to say that using an oscilloscope made the construction be much more easier and faster, and that people who don't have one would need to be patient on the task.

I used a BC517 instead of the MPSA13, and three 10Ohm resistors in parallel to substitute R3 (as I couldn't find a 3R3 resistance with the right power dissipation)

Thank you George Overton for this adventure, Surfdetector for your dedication to provide very explanatory videos, and to everyone contributing to this forum

[Qiaozhi]

Hi to all,

Finally had the opportunity to spend some time on the project, followed step by step the guidelines from the book and the videos from Surfdetector, and everything was working as expected since the first time!
Rest to do some adjustments as I used a coil from a previous project and I don't trust the damping resistor to be 100% suitable (but close enough).

I have to say that using an oscilloscope made the construction be much more easier and faster, and that people who don't have one would need to be patient on the task.

I used a BC517 instead of the MPSA13, and three 10Ohm resistors in parallel to substitute R3 (as I couldn't find a 3R3 resistance with the right power dissipation)

Thank you George Overton for this adventure, Surfdetector for your dedication to provide very explanatory videos, and to everyone contributing to this forum

Thank you Rzouga for the positive feedback.
I have said in the past that not having an oscilloscope when attempting an electronics project is like working with one hand tied behind your back. Well done on ending up with a working detector.

[Didomax17]

Hi,can some one give me files of arduino nano like pcb and hex file some

[Qiaozhi]

Hi,can some one give me files of arduino nano like pcb and hex file some

All the details are here -> Arduino Nano Pulse Induction Metal Detector Project - Published March 2021

[surfdetector]

Hi to all,

Finally had the opportunity to spend some time on the project, followed step by step the guidelines from the book and the videos from Surfdetector, and everything was working as expected since the first time!
Rest to do some adjustments as I used a coil from a previous project and I don't trust the damping resistor to be 100% suitable (but close enough).

I have to say that using an oscilloscope made the construction be much more easier and faster, and that people who don't have one would need to be patient on the task.

I used a BC517 instead of the MPSA13, and three 10Ohm resistors in parallel to substitute R3 (as I couldn't find a 3R3 resistance with the right power dissipation)

Thank you George Overton for this adventure, Surfdetector for your dedication to provide very explanatory videos, and to everyone contributing to this forum

It has been my pleasure to make the step by step videos in order to help others with their projects. I want however to give my thanks and appreciation to Qiaozhi for all of his hard work in creating these projects for us all.

[Qiaozhi]

It has been my pleasure to make the step by step videos in order to help others with their projects. I want however to give my thanks and appreciation to Qiaozhi for all of his hard work in creating these projects for us all.

[lamoiz]

last week, I went to the seaside to do some detection, I was with a friend who owns an excalibur 1000, for the test, I walked past him with the nano and the 325 coil .. well it's great. .I see everything ... and more than him in depth ... yes I have no disc it is true ... but I go deeper, and on smaller targets ... the class

[MartyJ1963]

Nice one Lamoiz! I have not found time yet to build your coil,,,hopefully soon, Regards, Marty.

[lamoiz]

Nice one Lamoiz! I have not found time yet to build your coil,,,hopefully soon, Regards, Marty.

I hope that you will soon build yours, we can make comparisons, in order to make positive evolutions and to improve ourselves. !see you soon my friend