Uploaded May 2025 | Updated September 2026, 2 weeks ago

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Are these stamp-sized ESP32 boards a clever way to shrink your project, or just a small headache waiting to happen? In my last video, I tried to bridge 36,000 km using one of these small boards — and it didn’t go well. So today, let’s test a bunch of them and see which ones are actually worth using.

My second channel: youtube.com/HB9BLAWireless

Links:
C3-2: https://s.click.aliexpress.com/e/_oD1YgTX
C3-3, H2-2, S3-1, S3-2, C3-4: https://s.click.aliexpress.com/e/_oD8nJzr
C3-1, C6-2, S3-3, H2-1: aliexpress.com/item/1005007594303790.html
C3-5: https://s.click.aliexpress.com/e/_oosMNWt
C3-6: https://s.click.aliexpress.com/e/_oDM801T
Seeed Studio: amzn.to/4d20ekp
S3: amzn.to/44muS5N
C3: amzn.to/4iJdxHy or amzn.to/4iJ6r5R

ESP32 conventional mini: https://s.click.aliexpress.com/e/_okynshx
Keyes ESP32 Devkit: https://s.click.aliexpress.com/e/_oFEj6yD

XIAO Boards: https://s.click.aliexpress.com/e/_oBrX665
RP2040: https://s.click.aliexpress.com/e/_oD4UyMt

Comparison sheet: docs.google.com/spreadsheets/d/13ZaT3M0Kduwyyg-0PB5NsA8wFH66zvUF4Vkch_5ClWc/edit?usp=sharing


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Supporting Material and Blog Page: sensorsiot.org
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