Q-Octo – We reinvented the wheel with a compact endurance rover
Hello, inspired by Q-Whex [1], we built Q-Octo, a compact rover with eight quasi-wheels (160° cut out). The wheel design enables the rover to climb over larger objects while rolling smoothly on flat ground. Q-Octo uses four drill batteries, two Xiaomi Cybergear motors (vs 6 motors for the Q-Whex), two Raspberry Pi Pico’s (one with WiFi), a Pimoroni Pico display, and a variety of 3D-printed & laser cut pieces for the body. The rover can be configured via its Wi-Fi access point as it hosts a web socket server with mDNS and a captive portal. Messages are encoded via Flatbuffers. It is driven…
What it does
In the maker’s words, at launch
Hello, inspired by Q-Whex [1], we built Q-Octo, a compact rover with eight quasi-wheels (160° cut out). The wheel design enables the rover to climb over larger objects while rolling smoothly on flat ground. Q-Octo uses four drill batteries, two Xiaomi Cybergear motors (vs 6 motors for the Q-Whex), two Raspberry Pi Pico’s (one with WiFi), a Pimoroni Pico display, and a variety of 3D-printed & laser cut pieces for the body. The rover can be configured via its Wi-Fi access point as it hosts a web socket server with mDNS and a captive portal. Messages are encoded via Flatbuffers. It is driven manually via a radio transmitter with a custom UI that we made using Lua & EdgeTX. Autonomous navigation can be achieved by hooking up a single-board computer via UART. We are four students who built this as one of four modules in the final semester of our undergraduate degree. Search ELEC6212 on YouTube to see what our peers got up to. Britannio, Josh and Niall studied Computer Science, and Alfie studied Electronic Engineering. Everything is open-source and we made a Discord server [2] to support people interested in creating their own Q-Octo. Nonetheless, we intend to refine the design and commercialise Q-Octo this summer if there is sufficient interest. Would you like one? Are you using a comparable rover? Advice here would be useful :) A YouTube video with development progress and our test runs: https://www.youtube.com/watch?v=2PIdxYJO_Ck [1] https://www.youtube.com/watch?v=UJHbiZUROM8 [2] https://discord.gg/2d6yUmEQwZ
Does the same job
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I am not sure if this is fits the HN community, but I am posting it here if people are interested. This is the current iteration of the car: http://i.imgur.com/ko8YBh.jpg Details: I wrote a simple android app that streams the accelerometer data from the phone to the pi over a simple socket. The pi then uses this data to drive the DC motor and the servo motor. Tilting the phone to control the car feels very natural. In this[0] pic you can see the wifi dongle I've used. I am using Adafruit Occidental v0.2[1] as my OS because it has support for my wifi dongle. It also makes some hardware…

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