Collaborate Disseminate
By now, 3.3V has become a comfortable and common logic level for basically anything you might be hacking. However, sometimes, you still need to interface your GPIOs with devices that …read more Continue reading When Your Level Shifter Is Too Smart To Function
If you have ever had to fix a modern desktop motherboard, you might have noticed that the BIOS (UEFI) SPI flash is 1.8V – which means you can no longer …read more Continue reading Motherboard Revived With Simplest 1.8V SPI Shifter Ever
Ever since the Raspberry Pi Pico was introduced in early 2021 we’ve seen the tiny Pi being used for an astonishing variety of applications. It has powered countless clocks, gadgets, …read more Continue reading Pi Pico Becomes SRAM for 1981 Educational Computer
When it’s not just sticking fake gears on things and calling it a day, the Steampunk look is pretty cool. Imagining technology in a world stuck with Victorian aesthetics is …read more Continue reading YouTube Like It’s 1970s France with this Minitel-VCR Mashup
Over the last year or so we’ve noticed a definite uptick in the number of folks using OpenOCD on the Raspberry Pi. It’s a cheap and convenient solution for poking …read more Continue reading JTAG Hat Turns Raspberry Pi Into a Networked Debugger
Released in 1989, the Game Boy version of Tetris is notable for being the first game to support multiplayer via the so-called “Game Link Cable” accessory. So it’s fitting that, …read more Continue reading Tetris For Game Boy Gets Online Multiplayer
If you’re looking to control WS2812 (or Neopixel) LEDs using a microcontroller running at 3.3 volts, you might run into some issues. The datasheet tells us that a logic high input will be detected at a minimum voltage of 0.7 * Vcc. If you’re running the LED at 5V, this means 5 V * 0.7 = 3.5 V will be needed for the WS2812 to detect a ‘1’ on the data line. While you might get away with using 3.3 V, after all the specification in the data sheet is meant to be a worst case, it’s possible that …read more
Continue reading Cheating at 5V WS2812 Control to Use 3.3V Data