The short answers for September 2026: build new tutorials on ROS 2 Lyrical Luth or Jazzy Jalisco, not Kilted Kaiju; expect to pay more for every board with modern DRAM on it; and check the EU Cyber Resilience Act before you sell a kit. Those three facts drive most of the questions robotics builders are asking this month, and each has a dated, sourced answer below. This page collects the questions that come up repeatedly on tutorial comment threads and build logs — which distribution to target, what a starter arm actually costs in money and hours, which Arduino board runs Linux, and what a hobby kit seller now has to report. Each answer names its source so you can check the primary document before committing a weekend to a build.
Table of Contents
- Which ROS 2 release should a 2026 tutorial target?
- Why single-board computer prices jumped in 2026
- What the Arduino UNO Q changes for a hobby build
- What does a first robot arm actually cost, in money and hours?
- If you sell your project as a kit in the EU, new duties started this month
- The 2026-2027 FIRST Tech Challenge season
- Frequently Asked Questions
Which ROS 2 release should a 2026 tutorial target?
Target Lyrical Luth. It is the twelfth ROS 2 release and shipped on 22 May 2026 as a long-term support version, supported until May 2031, with Tier 1 binaries for Ubuntu 26.04 "Resolute" and RHEL 10. ROS 2 is the middleware most robotics projects use to pass messages between sensors, controllers and planners; "Tier 1" means the release is built and tested on that operating system by the project itself, so packages install from binaries instead of source. The trap is Kilted Kaiju.
It looks current, but the ROS 2 release list shows Kilted is a non-LTS release supported only until November 2026 — weeks away. A tutorial written against it goes unsupported almost immediately, and readers who follow it in December are debugging against a distribution nobody patches. If you need a base with an existing library ecosystem rather than the newest one, Jazzy Jalisco is supported to May 2029 and remains a reasonable choice. Practical rule: Lyrical for new work, Jazzy for work that depends on packages not yet ported, Kilted for nothing you expect to maintain.
Why single-board computer prices jumped in 2026
Memory. DRAM prices rose sharply through the year, and board vendors passed the cost on. Raspberry Pi raised prices twice: a February increase added $10 to the 2GB model, $15 to 4GB, $30 to 8GB and $60 to 16GB, and the company's April announcement added up to $100 more on the 16GB Pi 5, noting LPDDR4 had risen roughly sevenfold in a year. Two things soften the blow. Raspberry Pi introduced a 3GB Raspberry Pi 4 at $83.75 to hold a low-cost entry point, and older LPDDR2-based products — the Pi 3 era and the Zero line — are shielded because the company holds substantial inventory of that memory.
For a tutorial that needs a Linux board and not much RAM, a Zero or a Pi 3 is now the stable-priced option rather than the compromise. NVIDIA moved further. In July 2026 it raised Jetson prices by up to 101%: the Orin Nano Super developer kit went from $249 to $399, the AGX Thor developer kit from $3,499 to $5,499, and the Jetson Nano module from $99 to $199. As CNX Software reported on 22 July 2026, there was no announcement post — the new figures simply appeared in NVIDIA's developer FAQ and store. If you are following a course syllabus or a build guide written before July, its bill of materials is wrong, and the gap on a Jetson-based project is hundreds of dollars.
What the Arduino UNO Q changes for a hobby build
The UNO Q puts a Linux computer and a real-time microcontroller on one board. It pairs a Debian-capable Qualcomm Dragonwing QRB2210 with an STM32U585 MCU and 16GB of eMMC storage, and sells at €59.90 for the 2GB version and €82.90 for 4GB according to the Arduino store listing. That combination is the usual answer to a common beginner problem: a Linux board handles networking and vision well but cannot reliably hold precise motor timing, while an MCU does timing perfectly and cannot run a vision stack. The practical difference is the workflow.
Arduino App Lab runs on the board itself — plug in a monitor, keyboard and mouse and you develop on the target, with no separate host machine in the loop. For a classroom or a workshop, that removes the driver-and-toolchain step that eats the first hour of most sessions. The same architecture is moving upmarket. Arduino announced the VENTUNO Q in March 2026, built on Qualcomm Dragonwing IQ8-series processors and again combining stronger AI compute with a real-time microcontroller for hardware control. If you are planning a build around on-device perception, that split — heavy compute on one side, deterministic control on the other — is the shape the tooling is converging on.
What does a first robot arm actually cost, in money and hours?
Hugging Face's SO-101 is the reference answer for a low-cost 6-DoF arm. "6-DoF" means six degrees of freedom: six independently driven joints, enough to position a gripper and orient it. The project publishes a full bill of materials, print files, assembly instructions, simulation setup and teleoperation guides, so nothing critical has to be reverse-engineered from a video.
Budget honestly. Kits start near $199, but a leader-plus-follower pair — one arm you move by hand to demonstrate a task, one that copies it — runs into the hundreds. The LeRobot documentation puts assembly at roughly three to four hours, and that excludes print time, which is the part people underestimate: a set of structural parts is typically an overnight job on a consumer printer, longer if a part fails and needs a reprint. Before ordering, check these against your own setup:.
- Print volume and material — confirm the largest part fits your bed before you buy servos.
- Servo availability in your region, since the BOM's specific parts drive the calibration values in the guides.
- Whether you need one arm or a leader-follower pair, because teleoperation demos need both.
- A host machine for training or inference, priced at 2026 board costs rather than a 2025 guide's numbers.
If you sell your project as a kit in the EU, new duties started this month
The EU Cyber Resilience Act's reporting obligations took effect on 11 September 2026. From that date, manufacturers of products with digital elements must report actively exploited vulnerabilities and severe incidents, and the European Commission's CRA reporting page sets penalties up to €15 million or 2.5% of turnover. Hobby projects sold as kits in the EU are in scope — the threshold is placing a product on the market, not the size of the outfit doing it.
The timing differs for open-source stewards, whose own reporting duties begin on 11 December 2027. That distinction matters for the common robotics pattern of publishing firmware openly while selling assembled hardware: the sale is the part that carries the earlier obligation. What this means in practice for a small seller is a contact route for vulnerability reports and a record of what firmware version shipped to whom. Neither is expensive to set up in advance, and both are painful to reconstruct after a report arrives.
The 2026-2027 FIRST Tech Challenge season
FIRST Tech Challenge's game for the 2026-2027 season is BIOBUZZ, presented by RTX, part of the FIRST CANOPY season. Kickoff on 12 September 2026 was the point at which the full gameplay rules and robot regulations were released — before that, teams had only the season's name and theme to work from.
The scoring element is "Pollen," and AndyMark sells it early, ahead of the full field kit. That is the standard opening move for experienced teams: buy the game piece as soon as it is available and start measuring intake geometry while the rest of the field is still on paper. If your team is building a prototype intake this month, the physical scoring element in hand beats any dimension you take off a rendering.
Frequently Asked Questions
Is it safe to start a long project on Kilted Kaiju if it works today?
No. Kilted's support ends in November 2026, so patches and binary updates stop within weeks. Start on Lyrical Luth, supported to May 2031, or Jazzy Jalisco, supported to May 2029.
Which cheap Linux board is least likely to jump in price again?
The LPDDR2-based products — the Pi 3 generation and the Zero line. Raspberry Pi holds substantial inventory of that memory, which is why those products were shielded from both 2026 increases.
I found a course that lists an Orin Nano Super kit at $249. Is that still right?
No. That figure predates July 2026. The developer kit is now $399, and the Jetson Nano module went from $99 to $199, so re-price any Jetson-based syllabus before committing.
Do I need to print the SO-101 parts myself?
No — kits are available starting near $199. Printing yourself saves money but adds overnight print time per part set, plus reprints when a part fails.
