You do not know how to make a PCB unless you can make your own parts. [Jan] knows this, but like everyone else he checked out the usual online sources for a footprint for an SD card socket before making his own. It turns out, this SD card socket bought from an online marketplace was completely undocumented. Not only was an Eagle or KiCad footprint unavailable, but CAD files showing the dimensions of the part were non-existent. A solution had to be devised.
Instead of taking calipers and finely measuring all the pads on this SD card socket – a process that would surely fail – [Jan] decided to use a flatbed scanner to trace out the part. The part was placed on the glass and scanned at 300 dpi with a convenient reference object (a public transport card) in the same picture. This picture was imported into a CAD package, scaled to the correct ratio, and exported as a DXF. Since KiCad readily accepts importing DXFs, the CAD file was easily accessed, traced over, and a new part created.
From start to finish, making the footprint for this no-name, off-brand SD card socket took fifteen minutes. That’s nothing compared to the time it would take to manually measure each of the pads, draw a footprint, and print out the footprint at 1:1 scale to see if it matched up several times. It’s awesome work, and a great reminder that the best tools are usually right in front of you.
The Raspberry Pi is the Arduino of 2016, and that means shields, hats, add-ons, and other fun toys that can be plugged right into the GPIO pins of a Pi. For this year’s Hackaday Prize, [Valentin] is combining the Pi with the next age of homebrew computation. He’s developed the Flea Ohm, an FPGA backpack or hat for the Pi Zero.
The Flea Ohm is based on Lattice’s ECP5 FPGA featuring 24k LUTs and 112kB BRAM. That’s enough for some relatively interesting applications, but the real fun comes from the added 32MB or 128MB of SDRAM, a micro SD card slot, USB + PS/2 host port and an LVDS output.
The combination of Raspberry Pis and FPGAs are extremely interesting and seem to be one of the best FPGA learning platforms anyone can imagine. Another Hackaday Prize entry, the ZinqBerry does a similar trick, but instead of a Pi hat, the ZinqBerry drops a Xilinx Zynq with an FPGA and ARM Cortex A9 core onto a board with Ethernet, HDMI, and USB.
If it’s a Flea or a Zinq, the age of FPGA’d Raspberry Pis is quickly approaching, and hopefully we’ll see them as finalists in the Hackaday Prize. You can check out a video of the Flea Ohm below.
[FoamieNinja] over on /r/radiocontrol is experimenting with single bladed propellers. Single bladed propellers are the most efficient way of pushing air behind an engine but haven’t really seen widespread use because they’re really weird, and I don’t know if you can do a variable pitch prop like this. You can find these types of props rarely on big-sized aircraft such as vintage J-3 Cubs sporting a 40HP engine. I haven’t seen them on anything bigger.
The J-Core is a clean room, open source CPU and SOC. Currently, it’s only implemented in VHDL until someone has a ton of money to burn on an ASIC. Now, the J-Core is supported by Linux. That makes an ASIC just a bit more likely. Thanks [Stefano] for the tip.
MakerBot is not at the New York Maker Faire this year. This is the greatest proof of the imminent failure of MakerBot, but it does deserve some context. In 2009, MakerBot demoed their first printer, the Cupcake, at the New York Maker Faire in Queens, NY. This was, by any reasonable historical reckoning, the introduction of a simple, easy to use, consumer 3D printer to the masses. The current trend of cheap desktop printers began seven years ago this weekend. MakerBot was so successful that it can be argued that Make:, the magazine and the faire, has tried to take credit for the consumer 3D printer ecosystem, simply because they hosted the launch of the Cupcake. Over the years, everyone has tried to ride MakerBot’s coattails. Since then, a few things happened. Last month, MakerBot introduced a new line of (China-manufactured) 3D printers, and they don’t have a booth. The reasons for this could be that Maker Faire is horrifically expensive for any vendor, and MakerBot is going to be at CES next year anyway, but this is it. The MakerBot obituary was not premature. We won.
Building a big 3D printer has its own challenges. The strength of materials does not scale linearly, of course, and long axes have a tendency to wobble. That said, building a bigbot isn’t hard – stepper motors and aluminum extrusion are made for industry, and you can always get a larger beam or a more powerful motor. [James] is going in the opposite direction. He’s building tiny, half-scale printers. They’re small, they’re adorable, and they have design challenges all their own.
At this year’s New York Maker Faire, [James] is showing off his continuing project of building baby 3D printers. He has a half-scale wooden Printrbot, a half-ish scale Mendel Max, a tiny Makerbot Replicator, and a baby delta and baby Ultimaker in the works.
Click past the break for a gallery, and more info on [James’s] tiny creations.
The Garden of Eden Creation Kit, or GECK, is the MacGuffan of Fallout 3 and the name of the modding tool for the same game. In the game, the GECK is a terraforming tool designed to turn the wasteland of Washington DC into its more natural form — an inhospitable swamp teeming with mosquitos.
A device to automatically terraform any environment is improbable now as it was in Wrath of Khan, but a “Garden of Eden Kit” is still a really great name. For their Hackaday Prize entry, [atheros] is building a simplified version of this terraforming device. Instead of turning the Tidal Basin into potable water or turning a nebula into a verdant planet, [atheros]’s Garden of Eden Watering Kit turns empty potted plants into a lush harvest of herbs.
The device, like most home gardening solutions presented in this year’s Hackaday Prize, isn’t geared towards irrigating acres of crops. This is just a simple, small device meant to water a few herbs growing in a pot on a balcony. The hardware consists of a Teensy LC and a small OLED for command and control. A soil moisture sensor goes into each pot, and a few 12V peristaltic pumps water the plants from a bucket reservoir.
For the home gardener, it’s the perfect setup to grow some herbs, some chilis, or a cherry tomato plant that produces a year’s worth of tomatoes every week. It’s a great adaptation of off the shelf tech, and a great entry for the Hackaday Prize.
For the last two years, Arduino LLC (the arduino.cc, Massimo one) and Arduino SRL (the arduino.org, Musto one) have been locked in battle over the ownership of the Arduino trademark. That fight is finally over. Announced at the New York Maker Faire today, “Arduino” will now go to Arduino Holding, the single point of distribution for new products, and a non-profit Arduino Foundation, responsible for the community and Arduino IDE.
Since early 2015, Arduino — not the Arduino community, but the organization known as Arduino — has been split in half. Arduino LLC sued Arduino SRL for trademark infringement. The case began when Arduino SRL, formerly Smart Projects SRL and manufacturers of the Arduino boards with a tiny map of Italy on the silk screen, began selling under the Arduino name. Arduino LLC, on the other hand, wanted to internationalize the brand and license production to other manufacturers.
All of this is now behind us. The open source hardware community’s greatest source of drama is now over.
I spoke with Massimo after the announcement, and although the groundwork is laid out, the specifics aren’t ready to be disclosed yet. There’s still a lot to work out, like what to do with the Arduino.org Github repo, which TLD will be used (we’re rooting for .org), support for the multitude of slightly different products released from both camps over the years, and finer points that aren’t publicly visible. In a few months, probably before the end of the year, we’ll get all the answers to this. Now, though, the Arduino wars are over. Arduino is dead, long live Arduino.
This weekend at Maker Faire, Chipsetter showed off their pick and place machine. It is, in my opinion, the first pick and place machine designed for hackerspaces, design labs, engineering departments, and prototypers in mind. It’s not designed to do everything, but it is designed to everything these places would need, and is much more affordable than the standard, low-end Chinese pick and place machine.
Inexpensive and DIY pick and place machines are familiar territory for us. A few years ago, we saw the Carbide Labs pick and place machine, a machine that allows you to put a board anywhere, pull chips out of tape, and place them on pasted pads. The Retro Populator is a pick and place machine that retrofits onto a 3d printer. The Firepick Delta, another Hackaday Prize project, takes a mini-factory to its logical conclusion and is capable of 3D printing, populating boards, dispensing paste, and creating its own circuit boards. All of these machines have one peculiarity: they are entirely unlike normal, standard, industrial pick and place machines.
The idea of any startup is to build a minimum product, and the idea behind Chipsetter is to build a minimally viable tool. For their market, that means being able to place 0402 components (although it can do 0201, the team says the reliability of very small packages isn’t up to their standards), it means being able to shoot 1250 components per hour, and it must have inexpensive feeders to accept standard tape.
This is a complete departure from the spec sheet of a machine from Manncorp. For the ‘professional’ machines, a single feeder can cost hundreds of dollars. According to Chipsetter founder Alan Sawula, the feeders for this machine will hopefully, eventually cost about $50. That’s almost cheap enough to keep your parts on the feeder. A pro machine can handle 01005 components, but 0402 is good enough for most projects and products.
This is the closest I’ve seen to a pick and place machine designed to bridge the gap between contract manufacturers and hackerspaces. Most of the audience of Hackaday – at least as far as we’re aware – doesn’t have the funds to outsource all their manufacturing to a contract manufacturer. Most of the audience of Hackaday, though, or any hackerspace, could conceivably buy a Chipsetter. The Chipsetter isn’t designed to be the best, but when it comes to placing parts on paste, the best is overkill by a large margin.
The Chipsetter has a Kickstarter going right now. They’re about halfway funded, with a little more than three weeks to go. Right now, if you’re looking at pick and place machines, I’d highly suggest checking out the Chipsetter. It works, and with forty feeders it’s cheaper and more capable than the lowest priced ‘pro’ machines.