A CH32V003 Toolchain — If You Can Get One To Try It On
We’re in an exciting time for cheap microcontrollers, as with both the rise of RISC-V and the split between ARM and its Chinese subsidiary, a heap of super-cheap and very capable parts are coming to market. Sometimes these cheap chips come with the catch of being difficult to program though, but for one of them the ever-dependable [CNLohr] has brought together his own open-source toolchain. The pa
Building A Plasma Piano Ain’t Easy
Electronic arcs can be made to “sing” if you simply modulate them on and off at audible frequencies. We’ve seen it done with single Tesla coils, and even small Tesla choirs, but [Mattias Krantz] took this to extremes by building an entire “plasma piano” using this very technique. The build relies on ten transformers more typically used in cathode ray tubes. The transformers are capable of generati
Reliving A Bitmapped Past With A Veritable Hoard Of Bitmap Fonts
The fonts seen with old computer systems such as those from Apple and Commodore, as well as Microsoft Windows 3.1 and older, form an integral part of our interaction with these systems. These days such bitmap fonts are a rarity, with scalable vector-based fonts having taken their place on modern-day systems. This unfortunately also means that these fonts are at major risk of being lost to the sand
Candy Blaster Lets You Shoot PEZ At Your Friends
Nerf Blasters are great fun to play with, but you really shouldn’t eat the foam darts. Conversely, Pez dispensers are fussy and kind of boring, but the candy is a tasty treat. [Soloprototype] has presented us the best of both worlds, in the form of a 3D-printed Pez blaster, with a firm note that this toy is for grown-ups only. Overall, the design is very similar to the Pez Shooter, a long-disconti
MCP23017 Went Through Shortage Hell, Lost Two Inputs
The MCP23017, a 16-bit I2C GPIO expander, has always been a tasty chip. With 16 GPIOs addressable over I2C, proper push/pull outputs, software-enabled pull-ups, eight addresses, maskable interrupts for all pins, and reasonably low price, there’s a reason it’s so popular. No doubt due in part to that popularity, it’s been consistently out of stock during the past year and a half, as those of us unl
Blinky Business Card Plays Snake And Connect Four
There’s no better way to introduce yourself than handing over a blinky PCB business card and challenging the recipient to a game of Connect Four. And if [Dennis Kaandorp] turns up early for a meeting, he can keep himself busy playing the ever popular game of Snake on his PCB business card. The tabs are 19 mm long and 4 mm wide. Quite wisely, [Dennis] kept his design simple, and avoided the temptat
GitHub ESP32 OTA Updates, Now In MicroPython Flavor
Wouldn’t it be great if you could keep all of your small Internet-connected hacks up to date with a single codebase? A couple of weeks ago, we wrote up a project that automagically pulls down OTA updates to an ESP32 from GitHub, using the ESP32 C SDK. [Pascal] asked in the comments, “but what about MicroPython?” Gauntlet thrown, [TURFPTAx] wrote ugit.py – a simple library that mirrors all of the c
NE555-Based Electronic Dice
It has become a bit of a running joke in the Hackaday community to suggest that a project could or should have been done with a 555 timer. [Tim] has rather taken this to heart with his latest Electronic Dice project, which uses three of the venerable devices. If three seems like a lot of 555s to make an electronic die, then it may be worth considering that the last time we shared his project he wa
The PalmPilot Returns, This Time In Your Browser
The PalmPilot doesn’t seem to get much retrocomputing love, but maybe it should. After all, it might not have been the very first handheld, but it was probably the most successful, and that ultimately led to the era of the smartphone. Whether you miss your old Palm applications, or never got to experience them the first time around, fear not. You can now relive them in all their glory in your brow
リリース、障害情報などのサービスのお知らせ
最新の人気エントリーの配信
j次のブックマーク
k前のブックマーク
lあとで読む
eコメント一覧を開く
oページを開く
The Last Meccano Factory Is To Close. Will We Miss It?
New Possibilities From Fading Lighting Technology
Retro Gadgets: Make Your Scope Dual Channel
Dungeons And Dragons Board Game From The 1980s Holds A TMS1100
Modulex Is LEGO’s Long Lost Cousin
Dad Builds Frickin’ Tank For His Son
Inside A 1940’s Spy Radio
Take A Deep Dive Into A Commodity Automotive Radar Chip
Film Is Dead. Long Live Film, Say Pentax
Printed Film Camera Gets 10 Seconds Out Of A 35mm Roll
VHS-Decode Project Could Help Archival Efforts