Max power for E220 30dB module

Tagged: E220, power

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- 20 July 2025 at 23:17 #32897
  Elija
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  Hi.
  First of all thank you for all your great work.
  
  I use your tutorials to build a comunication between some vineyards. In each, it is an arduino nano connected to a E220-900T30D and to a relé.
  
  Arduino is powered by a 6V battery, by VIN pin; e220 module is powered by 5V pin of arduino.
  I saw, during message is send, that voltage on 5V pin drops for a moment. This is because of massive current consumption of e220 module during transmission.
  How i can prevent this voltage drop to improve maximum transmission-power of e220 module?
  
  Maybe I can power e220 module directly from battery, with a dc-dc step-down voltage divider? Or maybe placing a super-capacitor (0.1F, 5.5V) between vcc and gnd of e220 module?
  My goal is to offer constant 5.5V power to e220 module.
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