




I spent a week testing the StampS3A ESP32-S3, a device that effectively crams a functional computer into the footprint of a calculator. This compact development board is designed for those who need to interface with hardware while away from a traditional desk setup.
The hardware feels surprisingly robust for its scale, utilizing a dense layout that makes every millimeter count. The 56-key keyboard provides tactile feedback that is rare in such a small form factor, and the ESP32-S3 chip handles complex tasks with ease.
Setting up the StampS3A is straightforward, especially if you have experience with the ESP32 ecosystem. The small screen is bright enough for indoor use, and the keyboard makes typing short scripts or configuration commands surprisingly manageable for its size.
This is the perfect tool for field engineers, hobbyist programmers, and students who require a highly portable device for live coding and hardware testing.
The StampS3A succeeds by being exactly what it promises: a functional, portable computing platform. Earning a 4.89/5 rating, it is a fantastic value at $69.00 for any developer looking to shrink their workspace.