Closed wanysteus closed 4 years ago
nRF24L01+ | RFM69HCW | RFM9XW | SX1276/7/8/9 | |
---|---|---|---|---|
Type | FSK | FSK | LoRa | LoRa |
Freq. | 2.4 GHz | 433/868/915 MHz | 433/868/915 MHz | 433/868/915 MHz |
Valim | 3.3V | 3.3V | 3.3V | 3.3V |
Vlogic | 3.3V (5V ok) | 3.3V | 3.3V | 3.3V |
Protocol | SPI | SPI | SPI | SPI |
Lib | RF24 RadioHead |
RFM69 RadioHead |
RadioHead | RadioHead |
Link Budget | 140 dB | 164 dB | 168 dB | |
Antenna | Trace antenna | DIY (1/4 wavelength) | DIY (1/4 wavelength) | Spring |
Datasheet | Here | RFM69HCW-V1.1.pdf | RFM96W-V2.0.pdf | Here |
Buy module | Ebay (4$ + 10\$) LowPowerLab (6\$ + 15\$) |
Ebay (6$ +10\$) Banggood (7\$ + 0\$) LowPowerLab (12\$ + 15\$) |
Makerfabs | |
Buy breakout | Sparkfun (21$) | Adafruit (10$) | Adafruit (20$) | Makerfab (5$) |
Example | RandomNerdTutorials | Adafruit | Adafruit | CircuitDigest |
Prices after "+" are shipping costs. Shipping cost is unknown were there is no "+"
LoRa modules should get > 1 km range (line of sight) with a basic antenna.
Many counterfeit nRF24L01 on the market. Random performances.
Lots of information about RFM69/RFM9X. In particular lowpowerlab.com. Looks very reliable. Some modules look not genuine on ebay
Not much data about SX127X.
I suggest using a 3.3V board to use the transceivers. Tensy 3.2 are good but expensive. Another solution would be to use level shifters
Okej this topic has been open long enough. The conclusion so far seems to be:
Having 4 LoRa modules is good if we want to have one pair for the electronics team (for development and tests) and one pair for the propulsion team (for them to test their stuff). The 2 excess modules could also be used as spare in case of failure at the wrong time
The chosen parts are:
Total ~389kr
Single-core wire will also be needed to connect the LoRa modules to the breadboards AND also to build the antennas (like this)
Requirements :