DIY TDEM
- Thread starter geowizard
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- #2
Thread Owner
We already know the applications...
Treasure Hunting for Vaults.
Buried Treasure.
Gold and Silver exploration.
Airplanes buried in Glaciers.
The list goes on and on...
-Geowizard
Treasure Hunting for Vaults.
Buried Treasure.
Gold and Silver exploration.
Airplanes buried in Glaciers.
The list goes on and on...
-Geowizard
- Joined
- Apr 9, 2007
- Messages
- 698
- Reaction score
- 590
- Golden Thread
- 0
- Primary Interest:
- All Treasure Hunting
- #3
Thread Owner
The Computer;
For this application, one off-the-shelf, Arduino UNO!
I won't duplicate a book on the UNO here. Readers should seek out needed info online!
Spoiler alert: The Transmitter uses 2 (two) digital i/o pins. The Receiver uses no i/o resources.
How? Stick around and find out!
- Geowizard
For this application, one off-the-shelf, Arduino UNO!
I won't duplicate a book on the UNO here. Readers should seek out needed info online!
Spoiler alert: The Transmitter uses 2 (two) digital i/o pins. The Receiver uses no i/o resources.
How? Stick around and find out!
- Geowizard
- Joined
- Apr 9, 2007
- Messages
- 698
- Reaction score
- 590
- Golden Thread
- 0
- Primary Interest:
- All Treasure Hunting
- #4
Thread Owner
The system outline;
The Transmitter transmits a bipolar square wave into the ground. To do that, the UNO drives an "H-Bridge". The H-Bridge is a switching circuit connected to a DC voltage. The voltage can be a battery.
The H-Bridge is controlled by the UNO to switch the DC voltage on positive, off, on negative, off, on positive, repeating continuously or for ten or more cycles as desired. The alternating DC voltage is applied to a transmitter coil. The coil is a single or multiple turn loop of #10 or #12 gauge wire available at any hardware store.
A multi-turn receiver coil will be used to "receive" the response from the ground.
The receiver is an oscilloscope! Portable oscilloscopes are available online at Amazon or other retail vendors. The oscilloscope needs a sweep "trigger" input. Storage is needed to store signals on a flash memory card. These functions are normally included in even low-end oscilloscopes.
Skills needed:
Assembly skills are required. Use of wire cutters, screwdrivers, and assorted basic tools are needed.
Soldering skills are minimal. It is assumed anyone involved in DIY activities has the ability to fabricate.
A basic understanding of electric and electronic circuits will help in comprehending the circuits used and assist in simple troubleshooting if needed.
Safety:
Routine workbench safety rules apply. If you are not an adult, find a qualified adult to supervise.
- Geowizard
The Transmitter transmits a bipolar square wave into the ground. To do that, the UNO drives an "H-Bridge". The H-Bridge is a switching circuit connected to a DC voltage. The voltage can be a battery.
The H-Bridge is controlled by the UNO to switch the DC voltage on positive, off, on negative, off, on positive, repeating continuously or for ten or more cycles as desired. The alternating DC voltage is applied to a transmitter coil. The coil is a single or multiple turn loop of #10 or #12 gauge wire available at any hardware store.
A multi-turn receiver coil will be used to "receive" the response from the ground.
The receiver is an oscilloscope! Portable oscilloscopes are available online at Amazon or other retail vendors. The oscilloscope needs a sweep "trigger" input. Storage is needed to store signals on a flash memory card. These functions are normally included in even low-end oscilloscopes.
Skills needed:
Assembly skills are required. Use of wire cutters, screwdrivers, and assorted basic tools are needed.
Soldering skills are minimal. It is assumed anyone involved in DIY activities has the ability to fabricate.
A basic understanding of electric and electronic circuits will help in comprehending the circuits used and assist in simple troubleshooting if needed.
Safety:
Routine workbench safety rules apply. If you are not an adult, find a qualified adult to supervise.
- Geowizard
- Joined
- Apr 9, 2007
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- 698
- Reaction score
- 590
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- Primary Interest:
- All Treasure Hunting
- #5
Thread Owner
The system begins with a transmitter;
The transmitter timing is controlled by a "controller"!
The controller can be a simple Arduino UNO. The UNO is portable, about the size and weight of a pack of cigarettes and runs on a battery pack. I made a rechargeable battery pack using three, 3.7 Volt LiPO 18650 batteries connected in series. You can get the battery holders on Amazon and connect an appropriate adapter connector to the Arduino UNO.
Personal computer. If you are reading this, you have access to a computer.
Go to the Arduino website and download the Arduino IDE (Integrated Development Environment).
www.arduino.cc
There is a short learning curve to install the IDE and add libraries. Then, you can program Arduino software with the IDE and load the software into your Arduino UNO.
- Geowizard
The transmitter timing is controlled by a "controller"!
The controller can be a simple Arduino UNO. The UNO is portable, about the size and weight of a pack of cigarettes and runs on a battery pack. I made a rechargeable battery pack using three, 3.7 Volt LiPO 18650 batteries connected in series. You can get the battery holders on Amazon and connect an appropriate adapter connector to the Arduino UNO.
Personal computer. If you are reading this, you have access to a computer.
Go to the Arduino website and download the Arduino IDE (Integrated Development Environment).
Software | Arduino
Download the Arduino IDE for Windows, macOS and Linux. Discover Arduino App Lab, Cloud, and CLI. Get the best software tools for your projects today!
www.arduino.cc
There is a short learning curve to install the IDE and add libraries. Then, you can program Arduino software with the IDE and load the software into your Arduino UNO.
- Geowizard
- Joined
- Apr 9, 2007
- Messages
- 698
- Reaction score
- 590
- Golden Thread
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- Primary Interest:
- All Treasure Hunting
- #6
Thread Owner
If you have little or no experience, there are tutorials on the Arduino;
New projects, especially technical projects require the ambition to learn or expand on existing skills.
Arduino is part of early grade school academics! Young kids are learning to develop projects with the Arduino!
YouTube can take you from zero to 90 mph! Don't be afraid to jump right in!
- Geowizard
New projects, especially technical projects require the ambition to learn or expand on existing skills.
Arduino is part of early grade school academics! Young kids are learning to develop projects with the Arduino!
YouTube can take you from zero to 90 mph! Don't be afraid to jump right in!
- Geowizard
- Joined
- Apr 9, 2007
- Messages
- 698
- Reaction score
- 590
- Golden Thread
- 0
- Primary Interest:
- All Treasure Hunting
- #8
Thread Owner
Cutting corners on cost;
Cutting corners on cost is a personal decision. There are low cost Chinese clones on the market. The original Arduino uno has full support and works predictably. Arduino is working to knock off the knock offs.
The USB interface on your computer is used to connect the Arduino for programming, power, and utilities. The Arduino driver, another download makes the Arduino connect reliably.
The USB connection gets you up and running.
There are simple programs to load built into the IDE in the "Sketches" folder. Programs are called "Sketches".
- Geowizard
Cutting corners on cost is a personal decision. There are low cost Chinese clones on the market. The original Arduino uno has full support and works predictably. Arduino is working to knock off the knock offs.
The USB interface on your computer is used to connect the Arduino for programming, power, and utilities. The Arduino driver, another download makes the Arduino connect reliably.
The USB connection gets you up and running.
There are simple programs to load built into the IDE in the "Sketches" folder. Programs are called "Sketches".
- Geowizard
- Joined
- Apr 9, 2007
- Messages
- 698
- Reaction score
- 590
- Golden Thread
- 0
- Primary Interest:
- All Treasure Hunting
- #9
Thread Owner
This is not intended to be a tutorial;
The process of learning is an important part of the process. The process is a personal journey! There is a lot of support out in the Arduino community.
- Geowizard
The process of learning is an important part of the process. The process is a personal journey! There is a lot of support out in the Arduino community.
- Geowizard
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