This project is very similar to the Self Contained Haptic Distance Sensor except that is is meant to vibrate an implanted magnet instead of turning a servo. This means that some problems arise and some advantages are gained. There are no moving parts aside from a reed relay but a larger power source is needed.
I am directly mimicking the Bottlense project by Grindhouse Wetware but this allows me to make my own modifications and understand the workings. Grindhouse Wetware has provided their project open-source.
Another major difference this project features is a hand-mounted component which will contain a battery supply, relay, and a wire coil to excite the magnet. Both parts will be connected through a simple 3.5mm 3-conductor phone cord. This is a typical wire seen on headphones so the cords and connectors are cheap and easy to obtain.
Cyborg Distance Sensor is meant exclusively for those implanted with biosafe magnets.
Enough background
----------
Remodeling was done on the enclosure to accommodate the change of parts. The servo mount was eliminated which made room for a larger symbol on the back. Thickness on the back lid was reduced. A large rectangular hole was made for the 3.5mm headphone socket after taking measurements from a piece used.
Changes to the enclosure
Code from the Self Contained Haptic Distance Sensor was modified so it could use a smaller microcontroller. Originally the Self Contained Haptic Distance Sensor used an Arduino Pro Mini but a smaller board is being substituted which uses an ATtiny85 based board. This board has only 5 I/O pins. Two have been reserved for data and the remaining three will be used for the discrete I/O used on this project. The code was written minimally, shown on the left half of the picture. After a minimal version of the code was written a more robust version was written which takes advantage of functions, spacing and comments. A version of the code could be written which outputs audible frequency rather than the low frequencies intended for a finger magnet.
To do:
The rest of the posts for this project have been arranged by date.
Completed projects from year 1.
Completed projects from year 2.
I am directly mimicking the Bottlense project by Grindhouse Wetware but this allows me to make my own modifications and understand the workings. Grindhouse Wetware has provided their project open-source.
Another major difference this project features is a hand-mounted component which will contain a battery supply, relay, and a wire coil to excite the magnet. Both parts will be connected through a simple 3.5mm 3-conductor phone cord. This is a typical wire seen on headphones so the cords and connectors are cheap and easy to obtain.
Cyborg Distance Sensor is meant exclusively for those implanted with biosafe magnets.
Enough background
----------
Remodeling was done on the enclosure to accommodate the change of parts. The servo mount was eliminated which made room for a larger symbol on the back. Thickness on the back lid was reduced. A large rectangular hole was made for the 3.5mm headphone socket after taking measurements from a piece used.
Animation of measurements taken
Code from the Self Contained Haptic Distance Sensor was modified so it could use a smaller microcontroller. Originally the Self Contained Haptic Distance Sensor used an Arduino Pro Mini but a smaller board is being substituted which uses an ATtiny85 based board. This board has only 5 I/O pins. Two have been reserved for data and the remaining three will be used for the discrete I/O used on this project. The code was written minimally, shown on the left half of the picture. After a minimal version of the code was written a more robust version was written which takes advantage of functions, spacing and comments. A version of the code could be written which outputs audible frequency rather than the low frequencies intended for a finger magnet.
Simple Vs robust code
To do:
- Draw schematic
- Buy parts:
- Reed relay
- 8 or 10 AAA battery holder
- Solder project
- Program
- Test + Debug
- Make files public
- Write instructions
The rest of the posts for this project have been arranged by date.
Completed projects from year 1.
Completed projects from year 2.
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2015-04-13 (M)
2015-04-13 (M)
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