Possible diy reciever using existing lora esp32 boards?

Given that the dreamcatcher is essentially a combination esp32 and LoRa receiver, would it be possible to use existing boards of that type to decode broadcasts? I have a couple of the following boards laying around for LoRa experimentation, and it seems like they have the hardware needed to work unless I’m missing something.


TTGO LORA32 V2.0 433/868/915Mhz ESP32 LoRa OLED 0.96 Inch Blue Display

LoRa SX1278 chip


  1. The display is very small, but can be expanded
  2. The input frequency band may not match the output band of the block downconverter.

Unfortunately all chips except the SX128x series can not receive the othernet bandwidth / beam setting. That excludes every LORA Module with a RTX frequency under 1 GHz. And even with the SX128x you need a SHF Mixer to tune the signal. Only exception is the Semtech LR1120. The Dreamcatcher 5 boards are the only tinker-boards that utilize that new chip to my knowledge at this point in time.

Dreamcatcher 3.x uses the SX1281+Mixer combo i mentioned earlier.

Dreamcatcher 2301, which includes the LR1120 will go into small batch production as soon as the factories are running again. They just recently got back from Chinese New Year.

1 Like