portable-heart-led
An over-engineered LED heart keychain: 16 LEDs, Arduino Nano and a rechargeable LiPo. Schematic, code and full build guide.
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This is 1 of 140 launches in open-source hardware and maker electronics — see how it stacks up on momentum and crowding →
48 other launches read as similar to this one →
Details
- External ID
- 1411715467
- Source
- GITHUB
- Company
- —
- Product
- portable-heart-led
- Website domain
- github.com
- Launched
- Oct. 9, 2026
- Cohort
- —
- Upvotes
- 39
- Upvotes percentile
- 0.65
- Tags
- arduino, arduino-nano, diy, electronics, keychain, kicad, led, lipo, maker, mt3608, open-hardware, tp4056
Enrichment
- Niche
- open-source hardware and maker electronics
- Vertical
- Horizontal
- Function
- Hardware & robotics
- Audience
- Prosumer
- AI stance
- Not AI
- Project type
- Hobby / open-source project
- Normalized one-liner
- diy led heart keychain build guide and firmware
- Manually corrected
- False
Could you build this?
No This is physical hardware engineering requiring custom PCB schematic design, soldering, component sourcing, and microcontroller firmware.
What it would actually take: Requires electrical engineering expertise to design schematics and PCB layouts in EDA software (KiCad/EasyEDA), LiPo battery management/charging circuit design (TP4056 or similar), custom PCB manufacturing, and embedded C/C++ firmware flashing.
Competitors
Other products that read as similar to this one — 48 launches clear the similarity bar, closest 8 shown.
Attention rank: #15 of 49 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 328 days after the earliest competitor.
- MiniWatts · github · 2026-09-10 · 120 upvotes · similarity 0.45
- Making a flexible "neon" t-shirt with LED filaments · hn · 2026-10-08 · 221 upvotes · similarity 0.37
- Digital to Wave: Wave computing-Memory · ph · 2026-09-14 · 1 upvotes · similarity 0.37
- SignalBar · github · 2026-09-20 · 22 upvotes · similarity 0.36
- Aquarium_Espresso · github · 2026-09-12 · 20 upvotes · similarity 0.36
- Multi-FPGA Usable Newbie Chips · hn · 2026-10-13 · 5 upvotes · similarity 0.36
- Kara: Making Diamond an Engineering Material · yc · 2026-08-11 · 85 upvotes · similarity 0.36
- Oura Ring 5 · ph · 2026-05-31 · 327 upvotes · similarity 0.36
Other launches for this product
- No other launches for this product.