Banggoodでの開発ボード、OLEDディスプレイのトップポジティブレビュー Japan|購入日本

27% OFF 2個LILYGO®TTGOLORA32868MhzESP32 LoRa OLED0.96インチブルーディスプレイBluetoothWIFI ESP-32開発ボードモジュール（アンテナ付き） 40,58€ 55,34€ View It

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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.

コメント (1)

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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 ...
返信 08/04/2021

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バッジについて

CEOバッジ

CEOバッジの所有者はバングッドのボス。

獲得できるバッジはまもなく提供されます

About Badges

Badges are related to the community, and users earn badges by creating quality content, completing missions, or by participating in special activities.

Helpful Badges

The Badge is awarded to users who are subscribed to the Invite Answer email and signifies their gratitude to help others. The badge appearance upgrades as the user helps more people.

You are the expert,can you help?

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Help others and be happier!

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バッジについて

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You are the expert,can you help?