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HOW TESS IS MADE
Congratulations on your new TESS! Now it is time to make TESS come alive! To assemble TESS you can follow the video and instructions below.
ASSEMBLE YOUR TESS
When you have bought your TESS SIMPLE this is how you assemble all the parts together to make her ready for the ocean.
If you have bought TESS PRO please follow the following steps below first!
TESS PRO - INSTRUCTIONS
Wow! You have accepted the challenge of TESS PRO! Now it is time to make TESS come alive! Programming can be quite challenging. This instruction will guide you to achieve a working TESS in a couple of hours. If you feel confident, try doing it yourself first! Use the titles and text to get clues what you should do. If you get stuck, it is OK to follow the more in-depths tutorials that are linked to each part!
DESIGN
01
Soldering
Tutorial:https://www.youtube.com/watch?v=JEyJJRcykXg
Remember to be careful when soldering so you do not burn yourself! It is also possible to use a breadboard instead of PCB-card. Soldering will result in a more robust product! Follow the schematics in the programming-part of this guide to make sure you solder together the right components!
We have a CAD file here if you want to print out our TESS-turtle model. But you can of course create your own design if you want!
If you do not have access to a 3D-printer you can also use something from your home. An old lunch-box perhaps? Make sure it is splash proof to protect the electronics!
02
3D-Modelling
PROGRAMMING
01
Installing OS
Tutorial:
https://www.raspberrypi.com/software/
IMPORTANT! ALL data on the SD-card which you install the OS on will be deleted! So make sure that you save photos, videos and other files on a separate place if you want to keep it.
02
Temperature Sensor
Tutorial:
https://www.circuitbasics.com/raspberry-pi-ds18b20-temperature-sensor-tutorial/
It is important to remember to connect the wire for temperature to the right pin on the raspberry, according to the scheme in the tutorial! Otherwise, it won’t work. The 3.3v and ground wires can be connected to any of the 3.3v and ground pins. Furthermore, remember to connect the resistor as shown in the tutorial. If you do not, there is a possibility that the temperature sensor will be rendered useless.
03
GPS Sensor
Tutorial:
https://www.sketchpadtech.com/using-the/
To enhance what is said in the tutorial, make sure you connect the RX port on the GPS to the TX port on the raspberry, and vice-versa.
Even though you got the same GPS as the tutorial (NEO-6M GPS) they all work a little bit different. At least the LED-indicator. On some units the LED will glow red when powered on, whilst on some units it will only flash once per second if it has a stable satellite connection. Therefore, do not worry if the GPS is not blinking when connected to a powered raspberry, it might just be one of those units.
04
Import Files
Put these files in a cloud service, like iCloud or Google Drive.
On your Raspberry, log onto that cloud service and download the files to the raspberry.
Put the files on the raspberry desktop. Put them on the desktop separately, not in a folder!
05
Autorun Script
Tutorial:
https://www.dexterindustries.com/howto/run-a-program-on-your-raspberry-pi-at-startup/
We recommend Method 2. It is the easiest and fastest method. Remember to save the .bashrc file with control-c before rebooting!