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martinpihrt / OSPy

A highly cusomizable DIY timer/controller based on Raspberry Pi
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ESP32 Range to the RPI #8

Closed garudaonekh closed 2 years ago

garudaonekh commented 2 years ago

Hi, What is the best range you can get between the ESP32 and the Raspberry PI? Or do you have any suggestion to improve the range.

I test on a farm, the range is terrible. I can't hardly get the ESP32 to work with the Raspberry above 30~40 meters. I need to use wifi repeater(which is causing another point of failure). I think it's because the Raspberry pi's wifi itself is weak.

martinpihrt commented 2 years ago

Hi, I don't use Wi-Fi with the Raspberry Pi. I have a Raspberry Pi connected to my LAN network. At the house has an external wifi router from the company mikrotik (the company is not important, but the outdoor design is important). It is important to use the correct external antenna on the ESP32 sensor! Example of an antenna I use: antena https://www.i4wifi.cz/cs/211045-waverf-10-dbi-vsesm-vnitrni-antena-rsma-2-4-ghz cable https://www.i4wifi.cz/cs/210404-waverf-pigtail-u-fl-rsma-pro-minipci I have no problem with the connection (I have a sensor board 50 m away from the Wi-Fi). Best regards Martin

garudaonekh commented 2 years ago

to avoid wifi router, I use USB 4G dongle on RPI and make RPI as Access point so the ESP is connected to the RPI wifi. I use ESP32 wroom-32u. maybe i should try a better quality wifi antenna. I try several Chinese made antenna but they seem the same