We spend a lot of time looking at retrocomputing in the form of gaming and home computers, but it’s true to say that minicomputers are less common than hardware projects. Perhaps it’s the size, cost, or even relative rarity of the original machines, but DEC minicomputers are a bit unusual around here. [Sprite_TM] hasn’t bought us a PDP11 or a VT102 terminal, but he’s done the next best thing in th
We always marvel at how open-source tools can often outstrip their commercial counterparts. Yosys, the open-source tool for Verilog synthesis, is a good example. Although the Xilinx ISE design suite is something close to abandonware, a lot of people still use it because it supports older FPGAs the newer tools don’t. Its Verilog parser is somewhat slow to catch up to new standards, and according to
Even on the go, there is no substitute for a physical keyboard with buttons that move and click. Sure, you could solder a bunch of tactile switches to some perfboard, but how about going all out and making something robust as [Anthony DiGirolamo] did for his Teensy Thumboard. Everything is insertion-mount so it is an approachable project for anyone who knows the dangerous end of a soldering iron,
RISC architecture might change the world, but it runs an NES emulator right now. That’s thanks to MaixPy, the new MicroPython for the K210, the recently released RISC-V microcontroller that’s making waves in the community. [Robot Zero One] has the tutorial and [Other Dave] of EEVBlog has a video of the thing in action. The Sipeed K210 came to the English-speaking world in the form of a weird pre-o
Just for the challenge, just for fun, just for bragging rights, and just to do a little showing off – all perfectly valid reasons to take on a project. It seems like one or more of those are behind this tiny ESP32 board that’s barely larger than the coin cell that powers it. From the video below, [Mike Rankin] has been working down the scale in terms of powering and sizing his ESP32 builds. He rec
In a world where standards come and go with alarming speed, there’s something comforting about VGA. It’s the least common denominator of video standards, and seeing that chunky DB15 connector on the back of a computer means that no matter what, you’ll be able to get something from it, if you can just find a VGA cable in your junk bin. But that’s the PC world; what about microcontrollers? Can you c
There’s an elephant in the room when it comes to the Raspberry Pi Zero. The Pi Zero is an immensely popular single board computer, but out of stock issues for the first year may be due to one simple fact: you can run a Nintendo emulator on it. Instead of cool projects like clusters, CNC controllers, and Linux-based throwies, all the potential for the Pi Zero was initially wasted on rescuing the pr
The Amazon Dash is a $5 push-to-buy-cat-litter button which has excellent potential for repurposing, but you need to know what is going on inside first. [Tony Dicola] has the details in this excellent bare metal guide to the Dash. In this, he covers how to get inside the Dash and reprogram it to do something more interesting than buying cat litter. He first cracks the device open, connecting a pro
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