Uploaded January 2019 | Updated September 2026, 43 minutes ago

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$2 for 10 PCBs prototype: jlcpcb.com

Make a DIY wifi smartwatch using OLED display for under 20$. The esp8266 module has an inbuilt wifi module which allows the watch to connect to the internet. You can control other electrical appliances remotely through the internet from anywhere in the world. This is possible due to IoT services.

Materials :
ESP12-E(ESP8266) amzn.to/2DqS0TP
OLED Display amzn.to/2R4iSN0
3.7-volt battery amzn.to/2HnI9lr

Buy 10 PCBs at $2 from jlcpcb.com
Upload this Gerber file and checkout
drive.google.com/open?id=1sabUBZrsGNUEgXb_H7pFd1x25y3xrWuj

PCB Design Credit :
The Technowright