An open-source LED synthesizer. Play light patterns with your fingertips — and every Patternflow plays every pattern we make.
C-Rank Grade: B (Solid) - 53/100
External PR Merge Rate: 85%
Response Time: 12d
First Timer Success: -
engmung/Patternflow has a recorded first-timer success rate of 0.0%. Repositories ranked B typically provide actionable feedback during code reviews and actively nurture new community contributors.
Maintainers in engmung/Patternflow respond to incoming external pull requests in approximately 294.0 hours on average. Keeping PRs focused on single tasks and ensuring tests pass helps maintainers review faster.
The C-Rank™ system evaluates GitHub projects on a 0–100 scale using real data: PR merge rates, review turnaround time, active maintainer presence, and first-time contributor success. A score of 52.7 places engmung/Patternflow in the B tier.
The external contributor pull request merge rate for engmung/Patternflow is 85.2%, based on public PR activity from non-core contributors.
engmung/Patternflow does not currently have active "good first issue" tags indexed, but accepts external contributions through standard GitHub issue tracking.
An open-source LED synthesizer. Play light patterns with your fingertips — and every Patternflow plays every pattern we make.
Growing TypeScript project in engmung/Patternflow welcoming community pull requests and bug fixes.
Average Response Latency
Tracks hours until a maintainer leaves a review, comment, or PR response.
External Acceptance Rate
Percentage of community pull requests successfully merged into main.
First PR Conversion
Rate at which developers submitting their first repository PR succeed.
Show contributors that your repository actively reviews and merges external pull requests.
[](https://getmerged.abhishekco.de/engmung/Patternflow?utm_source=github&utm_medium=badge)
Historical health & responsiveness evolution
External PR acceptance
First PR success rate
50% receive response in
90% receive response in
Maintainer review activity heatmap & prime window prediction
Calculating local time...
Calculating local time...
Detected: UTC
Maintainers are most responsive around 10:00 UTC (10:00 UTC in your timezone). Recommended submission window is Tuesday - Thursday from 01:00 to 05:00 UTC (01:00 - 05:00 UTC local).
Maintainer Strategy: Maintainer Sweet Spot: PRs under 150 lines merge in ~191 hours (96% approval). Large PRs (>500 lines) take ~1411 hours (38% approval). Keep your diff compact for rapid review.
Area pcb What happened? In Patternflow v3.0.0, a USB Type-C connector (USB1, 14-pin THT) was introduced as an alternative power input option (Path B) alongside the 2-pin screw terminal (Path A / J4). Context behind choosing this specific USB-C part: The v3.0 board design deliberately avoided all SMD passives/components (100% Through-Hole / THT) to keep hand assembly accessible for DIY builders and to prevent potential cost surges if PCBA services were used later with SMT lines. To maintain this pure THT design goal, a 14-pin THT USB-C receptacle (SHOU HAN TYPE-C 14P CC-2.6 / LCSC C5187475) was selected. Note: Only power (VBUS/GND) and CC pins are used; data signals are not connected. Observed Failure Behavior: Power source: 5V USB power bank. Assembly & multimeter checks: Hand-soldering the tight pin pitch of this 14P THT connector is extremely challenging. Pre-power multimeter checks were performed, but given the tight spacing, it remains ambiguous whether a subtle micro-bridge or
Rate what actually matters after opening a pull request here.
Rate your first-hand PR experience (review speed, maintainer responsiveness, and onboarding ease) to help other contributors.
When evaluating whether to contribute to engmung/Patternflow, response velocity and maintainer engagement are crucial. GetMerged continuously tracks pull request trajectories, first-comment latency, and code review rounds to help developers avoid submitting pull requests to backlogged repositories.
Currently, maintainers of engmung/Patternflow acknowledge new external contributions in approximately 12 days+. Out of all submitted pull requests from non-core authors in the last 180-day window, 85.2% were successfully merged into the primary branch.
engmung/Patternflow has a recorded first-timer success rate of 0.0%. Repositories ranked Solid typically provide actionable feedback during code reviews and actively nurture new community contributors.
The initial maintainer response time averages ~12 days+. Keeping PRs scoped to single concerns and ensuring CI checks succeed will optimize review turnaround.
The C-Rank™ index scores repositories on a 0 to 100 scale using an objective formula: external PR merge rates, initial response speed, active maintainer count, and first-time contributor retention. A score of 52.7 places engmung/Patternflow in the Solid tier.
The external pull request merge rate is 85.2%. GetMerged isolates non-core community contributions so external developers get an accurate benchmark of PR acceptance probability.
engmung/Patternflow does not have open beginner labels indexed currently, but external PRs for bugs and documentation improvements are evaluated via normal issue triage.
All metrics displayed for engmung/Patternflow are automatically retrieved via the public GitHub API and recalculated daily. Insider pull requests submitted by repository owners or organization members are excluded from merge rate calculations to preserve objective external contributor statistics.