Author: Dušan Dakić

Dušan has been with magazin Mehatronika since 2019, focusing on tech reviews and how-to articles, as well as handling communications with our partners worldwide. He’s also the key person behind Mehatronika's English translations, especially of education- and maker-oriented texts.

As single board computers progress and become more and more powerful, so does their use as a desktop replacement become ever more viable. We’ve talked about this before – with several companies marketing their products as capable of such feats while accomplishing the task with varying levels of success.

In the last issue we’ve taken a look at two of Würth’s excellent boards designed for the Feather ecosystem – the MagIC3 FeatherWing and the Sensor FeatherWing. Both of these offer great features and ease-of-use for a low price.

Each time we get a bit of teenage engineering kit, it takes us on a journey during our review. The Swedish company seems to make just about anything they feel like making – which includes everything from serious, albeit quirky music devices – to adorable record cutters and singing dolls.

We’ve taken a look at the Raspberry Pi Zero 2 W. We found it to be a great cheap SBC which is seriously feature-packed. For just $15, you get a quad-core A53 CPU, 512 MB of RAM and 2.4 GHz WiFi and Bluetooth 4.2 connectivity.

Seeed’s Wio Terminal is an all-in-one contender in the educational development kit market. By interfacing with the real world, these boards allow programs to come to life and enable students to visualise concepts easily.

Foldable phones have been all the hype in recent years. Strictly speaking, these are not a new idea. The first concept foldable phone was the Nokia Morph – which never saw a functional prototype developed.

Samsung’s entry-level flagship phones are often overlooked due to the more apt Plus and Ultra models. However, year after year, these standard S-series models keep offering great performance and many of the exciting new features expected from the next generation flagship.

Following the success of the Galaxy S20 FE and the general popularity of the Galaxy S21 series, Samsung has once again taken to producing a new FE-series device. These “Fan Edition” phones usually come later in a series’ life cycle and pack a punch at a mid-range price.

The LattePanda Team launched the world’s thinnest pocket-sized hackable computer – LattePanda 3 Delta with global electronic components distributors. The collaboration will ensure that the product choice for LattePanda 3 Delta is passed on to customers through quick, easy online selection via the website of global electronic components distributors and LattePanda.

“LattePanda Team is so proud to cooperate with the global electronic components distributors for this joint launch. It delivers an exciting message to our customers that they can gain fast, easy access to our high-performance and hackable LattePanda 3 Delta anywhere in the world. Our collaboration will assure even higher levels of customer service,” said Sandy Zhang, CMO of LattePanda Team.

LattePanda 3 Delta is poised to define a new era of computing and drive mega creativity for tech enthusiasts and industry innovations. It gets a significant performance boost by upgrading from the Celeron
N4100 of the LattePanda Delta to the Intel 11th-generation Celeron N5105 processor with up to 2.9GHz burst frequency, maintaining almost the same pinout and layout as the previous version to allow for effortless system migration or upgrading by replacement. Compared to its previou version, the CPU of LattePanda 3 Delta speeds up to 2 x faster while the GPU speeds up to 3 x faster to support usage like playing a 4K HDR video and running heavy games.

Measurement equipment is a key part of an electronic workbench – and there’s no doubt good equipment is necessary for any serious work in the field. Companies like Tektronix, Agilent and Fluke are among the biggest and most respected brands in the field – with an iron grasp over the market.

We love calculators. There’s something charming about these tiny computers which were first contacts with programming for many aspiring developers. These devices were the desktops of the 1960s and the smartphones of the 1980s.

Second in the series of Würth’s add-ons for the Feather ecosystem is the Würth Sensor FeatherWing – featuring four of Würth’s own sensors on-board – those being the WSEN-PADS absolute pressure sensor, the WSEN-ITDS 3-axis accelerometer, the WSEN-TIDS temperature sensor and the WSEN-HIDS humidity sensor.

Feather is Adafruit’s system of development boards, available in a wide range of MCUs and peripheral options. FeatherWings are what they call the add-on “shield” type boards that stack above or below the main board to extend its capabilities.

Dymo’s versatile industrial range of Rhino 5200 labelling tools offers an array of materials and colours suitable for a variety of applications. All of the labels are tested and certified to withstand tough industrial conditions – which include extreme temperatures, direct sunlight and exposure to water, oil or other chemicals.

We’ve had our hands on the great CircuitMess Chatter in the previous issue. It’s a lovely DIY-assembled development platform with surprising versatility and a great beginner-friendly IDE called CircuitBlocks (based on MakeCode and PXT-Blockly).

SBCs are great. Reading through our extensive list of SBC reviews we’ve created over the past few years, one can notice our own love for these little systems enabling everyone to deploy IoT systems and create various server-based projects, among other things.

We’ve already the overheating tendencies of modern SBCs a few times in the articles we’ve written in the past. Seriously, these little powerhouses need some sort of cooling – be it passive or active – to retain their peak performance for a reasonably long time.

We’ve already had our hands on the excellent Banana Pi M5 SBC in our previous issue, and have explored some of its capabilities. Today, we’re taking a look at its smaller sibling, the Banana Pi M4, and the differences in features and price that might make it more enticing for some.

As a demo project, we created a little Wi-Fi enabled display stand using the SunFounder 10,1″ LCD touchscreen, Banana Pi M5 and the RT8822CS BPI WiFi/BT adapter. The display setup was extremely smooth and easy, but the WiFi module setup required some additional steps.

SBCs have been changing industry and maker spaces for quite a while now – and while many projects are developed using CLI tools and SSH access, sometimes a more graphically impressive solution might be needed – especially when user comfort is important.

And now for an unexpected demo…
… we are an engineering magazine, after all, so we wanted to create a bit of a crossover project to finish this review off. We grabbed one of our favourite MCUs – the SAME51-based ATMEL ATSAME51J19 and got to work!

In the past issue, we’ve already had our hands on the excellent teenage engineering POM-400 synth and POM-16 sequencer, and after being blown away by how excellent and full of surprises they were, we were raring for more. Thankfully, the amazing folks at teenage engineering provided us with a review unit of the OP-Z and the first bit of expansion kit designed for it – the oplab module.

These LoRa-based DIY texting machines come equipped with USB-C connectors for PC communication, and are built to be programmed with CircuitMess’ own CircuitBlocks IDE. It’s based around the Blockly language – meaning that it’s simple to use and quite intuitive for newcomers to the field.

When Formlabs unleashed the Form 3 (and its dental counterpart – the Form 3B) upon the world back in June 2019, it changed the game for desktop 3D printing by bringing an array of features never seen before in this form factor.

14.6 inches is a lot for a tablet. It’s massive. It feels like it just shouldn’t be this big – but in all its fourteen-and-a-half-and-a-bit-more inch glory, the Samsung Galaxy Tab S8 Ultra stood in front of us on our review desk – and it was up to us to figure out how to approach it.

We all love our Rapsberry Pi 4s, but it’s not a secret that they tend to overheat. Painfully so. It’s been the main complaint of every owner of one of these SBCs – and in our initial review of it, we’ve discovered that these issues aren’t limited to cosmetics only – as they negatively impact performance due to thermal throttling.

Circuitmess’ Chatter is the newest kit in their STEM Box series of unique DIY projects. Released in February 2022, it features quite a few technologies and concepts that it aims to introduce to students and tinkerers alike.

There are many things in industry that simply need to be labelled – panels, cables, storage systems, or just general things. Label makers are small thermal transfer printers that enable high-quality labels to be made on-site, and perhaps there is no better known brand than Dymo.

Pocket scientific calculators have spent three decades at the forefront of technology following their debut in 1972. In an era before personal computers, calculators developed and flourished, getting many features one would expect on a computer today – programming and graphing capabilities, complex data processing and expandable I/O.

We’ve already talked a bit about the musical capabilities of the new modulars, but let’s give them a bit of a technical look. First, the oscillators produce pretty clean signals, all at 4 V peak-to-peak (±2 V). The saw has some tiny inconsistency in its output, but it’s nothing worth noting too much. The oscillators are 1 V/oct, which pretty standard.

teenage engineering is one of those companies that always jump into the market with an original take on a concept. Their OP-1 and OP-Z synthesisers (well, more than just synthesisers, but that’s off-topic here) have created a huge splash and are still considered the finest examples of portable digital instruments.

A few decades ago, computers were big, clunky boxes that were full of discrete electronics, daughter boards and expansion slots. Miniaturisation brought us to a slimmer, sleeker form factor but only further increased production costs from an already high starting point.

The second SBC we have our hands on in this release is an interesting one. Hauling from China’s SINOVOIP is the Banana Pi M5. The Banana Pi lineup has been a trusted mainstay of the SBC industry for many years now, competing with the popular Raspberry Pi computers.

There’s no doubt that the modern consumer SBC market has spun off from the original Mac Mini, giving users a complete computer in a tiny packaging that’s easy to place anywhere on cramped home or office desks.

Another year has rolled around and there are new exciting Raspberry Pi products coming out on the market. Most of them are about what you’d expect – refinements and new form factors of the already established Raspberry Pi series of SBCs.