Introduction: Improve COOLBoard WiFi Range (cheap Trick)
today I will show you how to improve the COOLBoards (or quite any other ESP8266 based board) with this little mod.
- Your COOLBoard (or quite an
- 2 x 5 cm of wire
Step 1: Prepare Everything
Cut 2-3mm of isolation on each wire and put some tin on them (photo 1&2).
Put some tin on the end of the antenna on the microcontroller (see comment in photo 3).
Step 2: Solder and Test Everything
Solder one wire to the antenna and the other to the reset Button (photo 1).
Now let's check the signal. Photo 2 is before and photo 3 is after, you will have a 28% stronger signal (i will add db values later). Voila!
This cheap trick really improved the WiFi range of many of my ESP8266 projects ;)
Till next time!
We have a be nice policy.
Please be positive and constructive.
Is that pad on the RST switch, ground?
I'd try this on other devices also with similar pcb antenna!
Thanks, great idea!
Yes the pad is on ground!
the result depends on your board and how it is routed. It's just a dipole antenna, but i'm not a specialist : https://en.wikipedia.org/wiki/Dipole_antenna