Top Positive Review for Development Board,OLED Display on Banggood India|Shopping India

23% OFF 2Pcs LILYGO® TTGO LORA32 868Mhz ESP32 LoRa OLED 0.96 Inch Blue Display bluetooth WIFI ESP-32 Development Board Module With Antenna ₹3,938.72 ₹5,137.73 View It

Overall:

vidas66 26/09/2020

Good LoRa transmitter and receiver. The product arrived fast enough. I haven't tested the transmission distance yet. An excellent salesman.

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BG381752505 Iwrite complete review in which I described that these 868MHz modules are factory defective because they did not pack the output filter properly. 1 capacitor is wrong (they put 33pF instead of 3.3pF) and the filter instead of being at 868MHz it is at 277MHz. The result is an output power of just 3dbm (1.8mW) and an extremely short range! By replacing the capacitor with another correct value the output power increases to 19dbm (80mW).
I documented everything nicely, the scheme, pictures, measurements, but ...
Reply 08/04/2021

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