Dashboard for RaspPi-controlled toy sailboat with Node-RED
Mobile Controller
The final step, enabling a smartphone or tablet to connect to the Raspberry Pi, can be accomplished either by making the Raspberry Pi a WiFi access point or by tethering the Pi to a cell phone. You can find some great guides online on how to set up a Raspberry Pi as an access point (e.g., the Raspberry Pi Foundation website [5]). For this project, we used the simple tethering method. Once the Pi is tethered to a phone, the Pi's IP address can be obtained from the Wi-Fi hotspot users list on an Android device (Figure 8). The Node-RED dashboard is accessed on your phone with http://<pi_ip_address>:1880/ui (Figure 9). Assuming everything is connected correctly, you should be able to control the sailboat with your phone.
Figure 8: Pi hotspot address.
Figure 9: Node-RED mobile web dashboard.
Summary
Once you have mastered the basic Node-RED programming and sailboat construction, other projects are possible, such as motor boats, iceboats, and airboats [6].
Infos
- Node-RED: https://nodered.org
- K'Nex: https://www.knex.com
- TowerPro SG90: http://www.towerpro.com.tw/product/sg90-7/
- "Create amazing Pi apps without writing code" by Leah, Brooke, and Pete Metcalfe, Raspberry Pi Geek, issue 20, 2016, pg. 90, http://www.raspberry-pi-geek.com/Archive/2016/20/Create-amazing-Pi-apps-without-writing-code
- Raspberry Pi as an access point: https://www.raspberrypi.org/documentation/configuration/wireless/access-point.md
- "Use your smartphone to control an airboat" by Leah, Brooke, and Pete Metcalfe, Raspberry Pi Geek, issue 11, 2015, pg. 94, http://www.raspberry-pi-geek.com/Archive/2015/11/Use-your-smartphone-to-control-an-airboat
« Previous 1 2
Buy this article as PDF
(incl. VAT)
Buy Linux Magazine
US / Canada
UK / Australia
Direct Download
Read full article as PDF:
Price $2.95
Subscribe to our Linux Newsletters
Find Linux and Open Source Jobs
Subscribe to our ADMIN Newsletters
Find SysAdmin Jobs
News
-
OpenMandriva Lx 23.03 Rolling Release is Now Available
OpenMandriva "ROME" is the latest point update for the rolling release Linux distribution and offers the latest updates for a number of important applications and tools.
-
CarbonOS: A New Linux Distro with a Focus on User Experience
CarbonOS is a brand new, built-from-scratch Linux distribution that uses the Gnome desktop and has a special feature that makes it appealing to all types of users.
-
Kubuntu Focus Announces XE Gen 2 Linux Laptop
Another Kubuntu-based laptop has arrived to be your next ultra-portable powerhouse with a Linux heart.
-
MNT Seeks Financial Backing for New Seven-Inch Linux Laptop
MNT Pocket Reform is a tiny laptop that is modular, upgradable, recyclable, reusable, and ships with Debian Linux.
-
Ubuntu Flatpak Remix Adds Flatpak Support Preinstalled
If you're looking for a version of Ubuntu that includes Flatpak support out of the box, there's one clear option.
-
Gnome 44 Release Candidate Now Available
The Gnome 44 release candidate has officially arrived and adds a few changes into the mix.
-
Flathub Vying to Become the Standard Linux App Store
If the Flathub team has any say in the matter, their product will become the default tool for installing Linux apps in 2023.
-
Debian 12 to Ship with KDE Plasma 5.27
The Debian development team has shifted to the latest version of KDE for their testing branch.
-
Planet Computers Launches ARM-based Linux Desktop PCs
The firm that originally released a line of mobile keyboards has taken a different direction and has developed a new line of out-of-the-box mini Linux desktop computers.
-
Ubuntu No Longer Shipping with Flatpak
In a move that probably won’t come as a shock to many, Ubuntu and all of its official spins will no longer ship with Flatpak installed.