How 65% Mechanical Keyboard PCBs Balance Electrical and Mechanical Design

·1 views

The 65% mechanical keyboard format sits between the compact 60% and the larger TKL layout, retaining arrow keys while reducing overall footprint. Designing a PCB for this format involves fitting a switch matrix, microcontroller, USB or wireless circuitry, RGB lighting, and optional hot-swap sockets within a tightly constrained board outline. Unlike typical electronics PCBs, keyboard circuit boards also influence the physical typing experience, as switch placement, mounting holes, and flex cuts all affect how the board feels and fits the case. The switch matrix arranges keys into rows and columns with one diode per switch, and the exact configuration must reflect the actual layout rather than a generic template. Diode orientation consistency is especially important in production, as errors can cause keys to malfunction or disable sections of the matrix.

Read the full story at DEV Community

This is an AI-generated summary. ShortSingh links to the original source for the complete article.

Discussion (0)

How to Delegate AI Coding Tasks Securely Without Sharing Account Access

Sharing AI accounts or API keys among teammates creates security, accountability, and audit risks that are easy to overlook. A safer alternative involves separating task preparation from task execution, where the requester drafts a self-contained, portable task and the runner uses their own authorized AI subscription. A well-structured task should clearly define the desired outcome, project context, work boundaries, and required evidence, rather than relying on vague chat-based instructions. Sensitive information such as passwords, private keys, or production tokens should never be included in task handoffs. Completing the workflow with a delivery report — covering changes made, tests run, and items needing human review — ensures accountability without transferring account ownership.

0 comments Read more at DEV Community

ProgrammingDEV Community ·

Timezone Bug in Django Middleware Caused Endless Auth0 Login Loop

A developer discovered that a login loop in their application was caused by a subtle timezone mismatch in a custom JWT validation middleware, not a broken authentication flow. The Django backend was comparing token expiry timestamps — which are issued in UTC by Auth0 — against the server's local time, which was set several hours ahead of UTC. This made every newly issued token appear already expired, triggering an immediate 401 Unauthorized response on each API call. The frontend's session interceptor would then redirect the user back to Auth0, which silently issued a fresh token, restarting the cycle indefinitely. The fix required just one line change — replacing datetime.now() with datetime.now(timezone.utc) — to ensure the expiry comparison used the correct timezone.

0 comments Read more at DEV Community

ProgrammingDEV Community ·

Kubernetes Cost Overruns Stem From Poor Operations, Not the Platform Itself

Engineering teams frequently blame Kubernetes for soaring cloud bills, but analysis of production environments suggests the real culprit is inefficient operational decisions. Oversized resource requests, poor workload scheduling, and underutilized nodes cause clusters to appear full while large portions of compute power sit idle. Teams often overprovision CPU and memory out of caution, yet this can push cluster utilization below 40 percent and paradoxically reduce reliability rather than improve it. Misconfigured CPU limits further compound costs by throttling workloads and degrading application performance without any visible crash. Experts argue that right-sizing resources based on measured demand, rather than worst-case assumptions, is the primary lever for controlling Kubernetes infrastructure costs.

0 comments Read more at DEV Community

ProgrammingDEV Community ·

EU Commission's 2022 Foresight Study Examined Future of Platform Economy Policy

The European Commission launched a procurement in August 2022 for a two-year participatory foresight study on the future of online platforms, with a submission deadline of 22 September 2022. The study, referenced as CNECT/2022/OP/0049, was designed to identify ten key topics alongside Commission services and assess long-term trends in the platform economy. Rather than focusing narrowly on marketplace user experience, the project aimed to map possible future trajectories of the platform economy and their broader policy implications for the EU. External contractors, including PPMI and TNO, were engaged to carry out the work, and project materials confirm the study moved into execution beyond the procurement stage. Platform design elements such as recommendation systems, search presentation, and default settings were considered as part of the wider policy context, not as the sole focus of the research.

0 comments Read more at DEV Community