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- เผยแพร่เมื่อ 9 พ.ค. 2024
- This is a series of videos for the meetup group "Robotics and Artificial Intelligence". It will start off with the simplest construction - using a microbit computers.
It only takes 20 minutes for this simple three degree of freedom arm to be constructed and its uses Lego components from the Elecfreaks Nezha Inventors Kit for microbit. There are two microbit computers used. One is the remote control and its microbit is housed on an Elecrofreaks Joystick. Its buttons A and B are used to select the joystick. Button C is used to disarm the robot - an emergency stop and Button D to enable or arm the robot. Buttons E & F and the Logo Button are used to select a preset.
Microsoft Makecode is used for the software on both microbits with Makecode extensions for each.
The second microbit is used to control the servos on the Robot arm. at the moment only three servos are used but it can easily be extended to add another servo. This second microbit is mounted on a Elecfreaks Neza Adapter for microbit and PlanetX modules are used for the rest of its electronics. All except two of the servos comes with the Elecfreaks Inventor Kit for microbit.
Pivot lights are used to show the status of the controls. Red for arm engaged and green for disengaged.
Future videos will show other microbit versions. One is from Waveshare and is based on the meArm and there are plenty of other TH-cam videos to describe its theory and kinematics.
There will be a video on the using an AI camera with microbit so allow the robot arm to follow a target and pickup it up.
Hi, great work on all the videos!
Just wanted to reach out about your "miniFarm - using reTerminal" project. I am building something very similar and having issues where analogue sensors only give 0/empty readings, and my 1-wire device (DS18B20) connected on D5 isn't recognised in /sys/bus/w1/devices.
Would you have any tips on this, as you might have experienced similar problems during your project?
Hello Robert it is nearly two years since I have done this project and I have not done any FarmBeat projects since.
You need to be more specific about how you are using analogue sensors. What is your interface to the Raspberry Pi?
Did you use Grove sensors via the Grove Raspberry Pi Shield? If you use the procedures published by Seeed Studio then analogue sensors should work. You have a choice to follow either the Grove Shield for Raspberry Pi or their FarmBeats web page (www.seeedstudio.com/Grove-Kit-for-Raspberry-Pi-4-designed-for-Microsoft-FarmBeats-for-Students-p-4873.html?___store=retailer ). As it is now about 5 years since Seeed Studio developed this they have changed the driver on the Grove Shields so some of the old examples may not work on the latest shield. Microsoft support is currently provided in "IoT-For-Beginners" (github.com/microsoft/IoT-For-Beginners )
My project did not refer to the temperature soil probe using DS18B20 but I remember getting it to work on other FarmBeat projects I completed.
You may want to explore the internet for other FarmBeat references. FarmBeats was developed by Microsoft in partnership with Seeed Studio and was adopted by the CSIRO as a pilot project for agricultural schools.