Template Project Page
A brief summary of the project.
STATUS
Project completed in 2022
Primarily documented on hackday.io, 555 Timer - Timer
Overview
The 555 Timer-Timer project was developed in late 2021, early 2022 as a candidate to the Hackaday 555 timer contest. This widget acts as a configurable count-down timer that could be used as a cooking timer. To achieve this goal, the widget uses one main board that acts as an interconnect for ten add-in style PCBs. Each add-in PCB implements one of the main logical blocks of the final design. For example, there are individual PCBs for each digit of the binary coded decimal (BCD) down-counter, the multiplexer (MUX), and the BCD to 7-segment decoder. All of these logical blocks were custom made using 555 based logic. The RTL designs were simulated using LTSpice, and occasionally breadboarded to verify their functionality before implementing the design on hardware. Although the final design successfully met the project goals its usefulness is very limited due to its poor efficiency, accuracy, and relatively large footprint. Most likely this device will live on as a display piece in a home lab or office.
