{"id":11255,"date":"2025-10-13T09:15:21","date_gmt":"2025-10-13T08:15:21","guid":{"rendered":"https:\/\/dronesonen.usn.no\/?p=11255"},"modified":"2025-12-08T17:59:07","modified_gmt":"2025-12-08T16:59:07","slug":"astrorover-group-5-week-8-matetoget-mater-videre","status":"publish","type":"post","link":"https:\/\/dronesonen.usn.no\/?p=11255","title":{"rendered":"ASTROROVER – GROUP 5 – WEEK 8 – MATETOGET MATER VIDERE"},"content":{"rendered":"\n

August:<\/h2>\n\n\n\n

We are back on the horeseback. This week we have started to make the car autonomous to the max. In our first iteration we will make it dumb autonomous. What I mean with this, is that we will make the car drive forward, and stop driving when the Ultrasonic sensor detects obstacles closer to the car than the threshold allows. We will later integrate this with the LiDAR, and make it smart. As always I will follow best-practice. In this way, it will be later to integrate with ros2 and it will be easier to maintain the code, implement functions to the code, and to read the code.<\/p>\n\n\n\n

Before i start a task, i want to make sure that I dont miss a thing. When Sander and I wrote on the Game Design Document, he made a list in excel. Hes a frickin genius. We will never forget anything ever again (unless we forget to write something on the list). <\/p>\n\n\n\n

Implementation of Ultrasonic Sensor – Start of Autonomous Driving<\/h3>\n\n\n\n

Ultrasonic Sensor – Check List – Iteration 1<\/h4>\n\n\n\n
\"\"<\/figure>\n\n\n\n

I started by getting a grip of how to connect the Ultrasonic sensor (from now US) to the correct pins on the microbit drivingboard. I of course did that by following best-practice and created a kopplings scheme:<\/p>\n\n\n\n

Connection scheme<\/h4>\n\n\n\n
\"\"<\/figure>\n\n\n\n

Then i connect the pins physically. <\/p>\n\n\n\n

VCC->3v3<\/p>\n\n\n\n

TRIG->P1<\/p>\n\n\n\n

ECHO->P2<\/p>\n\n\n\n

GND->GND<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Simple Flow Chart of the Implementation<\/h4>\n\n\n\n

The code is more complex than this, but its a good way to explain to others, I think. <\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

First Ultrasonic Sensor readings<\/h4>\n\n\n\n

When this was okay, I implemented an easy code, just to make sure that the hardware worked, and that I got readings in the terminal. <\/p>\n\n\n\n