[Bea Thurman] had a retro music conundrum. She loved the classic Greengate DS:3 sampler, but couldn’t buy one, and couldn’t find enough information to build her own. [Bea’s] plea for help caught the attention of [Eric Schlaepfer], aka  [TubeTime]. The collaboration that followed ultimately solved a decades-old mystery. 

In the 1980s, there were two types of musicians: Those who could afford a Fairlight CMI and everyone else. If you were an Apple II owner, the solution was a Greengate DS:3. The DS:3 was a music keyboard and a sampler card for the Apple II+ (or better). The plug-in card was a bit mysterious, though. The cards were not very well documented, and only a few survive today. To make matters worse, some chips had part numbers sanded off. It was a bit of a mystery until [Bea and Tubetime] got involved. 

While [Bea] didn’t have the card itself, she had a photo of the board and a picture of an album that contained the key to everything. The Greengate came packed with a vinyl album, “Into Trouble with the Noise of Art.” An apt title, since the album art was the Greengate PCB top layer. Now if you know [Eric], you know he wrote the book (literally) on taking things apart and taking photos of them, even producing replicas. 

Thoroughly nerdsniped, [Eric] loaded the photos KiCad and started tracing. With the entire top layer artwork and most of the bottom layer, the 8-bit card wasn’t too hard to figure out. The sticky point was one chip. A big 40-pin part with the numbers scrubbed off. One owner pulled the chip to check for fab information on the back, only to be greeted by a proper British “You Nosey S.O.B.” penciled on top of more sanded part numbers. 

If the chip was an ASIC, the project would be blocked until they could get their hands on an actual board for analysis. An ASIC would have custom part numbers on it from the fab though – no need for sanding. It had to be something off the shelf. [Eric] used some context clues to determine that the Mystery chip had to be a DMA controller. This narrowed the field down. From there, he had to compare pinouts until he had a match with the venerable MC6844. 

With the mystery part out of the way, [Eric] put the finishing touches on the PCB, saved it to his GitHub as the GoodGreat DS:3, and sent it off.  A few days later, the bare boards arrived and were quickly populated with vintage parts. [Eric] ran a few tests and sent the card off to [Bea], where we will pick up with part 2. 

At least the device wasn’t protected with a self-destruct code.

"She offers us a heroine-centred narrative where a young, unprotected, often orphaned heroine is thrown into really dangerous situations where somebody is trying to force her into marriage and take her property rights." The heroines are often imprisoned in remote, atmospheric locations where supernatural events appear to take place. "That gives us a real sense of terror," said Wright. "It's quite psychological, before psychology was invented. She uses the image of the decayed castle or crumbling convent to explore the precarious and outmoded issue of marriage laws in England, where coverture meant a woman's legal identity and her property effectively disappeared when she married. So she shows young women in distress, in really exciting, action-packed narratives, with the aim of showing the precarious nature of a young female's existence who has no protection in society." By empowering her heroines with the strength and resilience they need to escape and marry the men they choose, Radcliffe is "very staunchly" showing that women can successfully resist domination, Wright said. "There is a sense of Radcliffe critiquing patriarchy and men who think they can dictate to women precisely what we should do and what we should give to them in marriage. So in many ways it is feminist literature, on a par with what Mary Wollstonecraft was arguing in A Vindication of the Rights of Women." At one point, a Radcliffe villain tells his victim: "You speak like a heroine, let us see if you can suffer like one." Wright added: "There's always a happy ending and a good resolution. But there's a sense of a heroine being able to manoeuvre that resolution."

• How Judy-Lynn del Rey shaped science fiction as we know it today - "Judy-Lynn del Rey (1943-1986) was a New York sci-fi and fantasy editor and a woman with dwarfism who revolutionized the world of sci-fi editing with books from luminaries such as Arthur C. Clarke, Isaac Asimov, and Philip K. Dick." (yt)
• The woman who revolutionized the fantasy genre is finally getting her due - "She reissued 'The Princess Bride' in 1977 with a dazzling, gate-folded die-cut cover and a new promotional campaign, without which the novel – and the film – might never have found its later success."

The Adafruit Feather ecosystem is so rich with hardware diversity, we wanted to share them, one each day. Today is the Adafruit 2.13″ HD Tri-Color eInk / ePaper Display FeatherWing – 250×122 RW Panel with SSD1680!

Easy e-paper comes to your Feather, with this breakout that’s designed to make it a breeze to add a tri-color eInk display. Chances are you’ve seen one of those new-fangled ‘e-readers’ like the Kindle or Nook. They have gigantic electronic paper ‘static’ displays – that means the image stays on the display even when power is completely disconnected. The image is also high contrast and very daylight readable. It really does look just like printed paper!

We’ve liked these displays for a long time, and they’re just about Feather sized, so wouldn’t a custom e-paper FeatherWing make a ton of sense? This ‘Wing is tested to work with all of our Feathers, from the ESP8266 to the M0. It has built-in memory buffering so it can work with chips as small as the ’32u4 and ‘328. It does use a lot of pins: the 3 SPI pins, and up to 4 control pins to manage the SD card slot and SRAM.

The FeatherWing sports a 2.13″ tri-color (red, black, and white) display. It has 250×122 black and red ink pixels and a white-ish background. We used to stock a version of a 2.13″ tricolor E-Ink with a lower-resolution display, this version is 250×122 pixels instead of 212×104 pixels and uses a different chipset (SSD1680) so code will need to be recompiled.

Using our CircuitPython or Arduino libraries, you can create a ‘frame buffer’ with what pixels you want to have activated and then write that out to the display. Most simple breakouts leave it at that. But if you do the math, 250 x 122 pixels x 2 colors = 7.5 KBytes. Which won’t fit into many microcontroller memories. Heck, even if you do have 32KB of RAM, why waste 8KB?

So we did you a favor and tossed a small SRAM chip on the back. This chip shares the SPI port the eInk display uses, so you only need one extra pin. And, no more frame-buffering! You can use the SRAM to set up whatever you want to display, then shuffle data from SRAM to eInk when you’re ready. The library we wrote does all the work for you, you can just interface with it as if it were an Adafruit_GFX compatible display.

We even tossed on a MicroSD socket so you can store images, text files, whatever you like to display. Comes assembled and tested with socket headers that you can plug your Feather right into, no soldering required!