Version 3 - DEVELOP
Aweigh - Version 3 was created for users like J. who appreciate the challenge and the freedom to build their own digital devices. All of Aweigh’s necessary components are simple electronics, which can be found in standard forms or are included in other devices situated in environments as mundane as your living room or your kitchen. The technology was developed so that each part of a device can be found and constructed from several sources, objects, environments - unlike GPS navigation, which has a single point of failure. We hope that Version 3 users will develop and upload their own implementation method , showing how day-to-day users of ubiquitous technologies can directly influence the shape of digital infrastructure. These users are invited to contribute to Aweigh’s public repository.
List of all components
DC power booster
Capacitors - 2 x 100 uF, 3 x 1000 pF, 3 x 1 uF, 1 x 150 uF, 1 x 0.1 uF, 1 x 10 uF
Resistors - 4.53k, 100k, 820k, 330k, 2 x 5k
Logarithmic op amp
Analog to digital converter (ADC)
Unity gain op amp
2 x Blue sensitive photodiode
Real-time clock module or other time-keeping mechanism
Processor - minimum 8-bit
Display, motors, or LEDS
List of handy equipment
Soldering iron and solder
Masking tape and duct tape
Multimeter or oscilloscope
This specific process description is inspired by insideGadget’s hack of a Nintendo Gameboy into a wireless controller.
Step 1 - Collect all components and materials. Polarisation sensors can be found in most screens, processors in smart devices, memory cards in cameras, ADCs in sensing devices, accelerometers in phones, logamps in speakers. In this example, a custom Gameboy Color cartridge is made: flash chip to store the ROM, ATmega48PA microcontroller, and Gameboy buttons for controls.
Step 2 - Gather relevant tools. This will depend on the specific components you choose to use and the objects that you might decide to take apart.
Step 3 - Research prior art and find examples. A few people have made custom Gameboy cartridges, while others have implemented their own controllers that are compatible with the same joystick interface. Some of these references will have the correct Vendor ID & Device ID
Step 4 - Use GBDK Program to make the ROM. See multi-game loader code. This program listens for key inputs and outputs them to an address with the data we specify.
Step 5 - Choose a memory address to write to and program the inputs as you wish.
Step 6 - Make the polarisation sensor by etching the PCB according to Aweigh’s self-navigation board schematic found here.
Step 7 - Test polarization sensor with any other processor and work out the calibration needed using the mathematical relationships described here.
Step 8 - Solder the flash chip, sensor cicruit, and data lines. A good example of a project turning a Gameboy into a wireless joystick is described here.
Step 9 - Carefully remove the current Gameboy Color display and replace with another LCD of your choice, connected to an Atmega48 board.
Step 10 - Implement a communication protocol between the cartridge and the microcontroller. This can be done physically or wirelessly through a receiver - some people have done this with an nRF24L01 receiver.
Step 11 - Program a simple GUI for the display, taking into account each step described by the algorithm found here.
Step 12 - Run the entire system and troubleshoot any communication issues between the three parts: the cartridge reads polarization values, the Gameboy is used to control the device, and the ATmega48 is used to process and display information.
Step 13 - Encase all parts in the Gameboy Color and plug the custom cartridge in.
Step 14 - Level the device, take the readings, find position, enter destination.
Step 15 - Anchors aweigh!