F32
An Extremely Small ESP32 Board
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As part of a little research and also some fun I decided to try my hand at seeing how small of an ESP32 board I can make with functioning WiFi.
HN · launched Nov 19, 2025 · 302 upvotes (top 3%) · 0 views
Niche: open-source hardware and maker electronics · 180 launches, 3 in the last 7 days ▼ -73% · Explore this niche →
Category and tags
- Horizontal
- Hardware & robotics
- Prosumer
- Not AI
- Commercial product
Visit website ↗ Source listing ↗
More like this: all 180 launches in open-source hardware and maker electronics →
Could you build this?
No This is a physical embedded hardware design project involving PCB layout, RF antenna tuning, and micro-component soldering.
What it would actually take: Requires EDA software (e.g., KiCad or Altium) for multi-layer PCB schematic capture and trace routing, RF impedance matching (50-ohm traces) for 2.4GHz Wi-Fi chip/PCB antennas, power delivery network design, and sourcing/manufacturing via PCB fab houses (SMT assembly). Specialized hardware electrical engineering and RF testing equipment (VNAs, spectrum analyzers) are required.
Discussion
20 comments analyzed.
Competitors mentioned: XIAO boards, Other WiFi modules with 5 GHz support
Concerns raised: Charger integration is difficult to use, USB connector affects antenna emission pattern, Could be exploited for hidden malicious devices in public chargers, Bottom side soldering risky without proper rework equipment
Feature requests: Remove USB-C port to make smaller and add more GPIO pads, Support for 5 GHz WiFi
Competitors
Other products that read as similar to this one : 98 launches clear the similarity bar, closest 8 shown.
Attention rank: #5 of 99 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 18 days after the earliest competitor.
- ESP32-CYD-MiniTV · github · 2026-09-16 · 26 upvotes · similarity 0.47
- Sidebar · hn · 2026-08-07 · 16 upvotes · similarity 0.47
- EoRa-S3-900TB · ph · 2026-11-10 · 1 upvotes · similarity 0.46
- We built the smallest dual-band aircraft tracker · hn · 2026-08-26 · 95 upvotes · similarity 0.44
- Babytalk: Offline speech to text and text to speech on ESP32 · hn · 2026-10-09 · 14 upvotes · similarity 0.44
- wifi-sensing-kit · github · 2026-10-10 · 145 upvotes · similarity 0.44
- I designed my own 3D printer motherboard · hn · 2025-12-06 · 127 upvotes · similarity 0.43
- Instant-on tiny ESP32 PC with an editor, compiler, and apps installer · hn · 2026-01-29 · 7 upvotes · similarity 0.43
The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.