SI4463 without HC-12 serial

Projects Networking, Protocols, and Devices
1

It seems that the HC-12 modules comprise an SI4463 wireless and a microprocessor that allows the Arduino to communicate with it using a Serial Connection.

I'm wondering if anyone knows if there is a smaller module that only has the SI4463 and an SPI connection - similar to an nRF24.

I would like to find a transceiver option on a smaller breakout board and as I will be using an Arduino (probably an Attiny 1634) anyway there does not seem to much point in having a second microprocessor.

...R

2

|Go with LoRa. The si4463 is crap with no support. Your money waste it. I know I did.

3

PicoPi:
|Go with LoRa.

This Adafruit LoRa module is much bigger than an nRF24L01+ module and several times the price.

The standard nRF24 is about 29mm x 16mm and I can cut off the antenna part to make it about 22mm x 16mm.

I am looking for something smaller. Are you aware of any smaller LoRa devices?

The si4463 is crap with no support. Your money waste it. I know I did.

Did you have a breakout board for the si4463?

And what do you mean by "no support"? I don't think I would have a problem writing code to interface with it based on the datasheet.

...R

4

You might consider these LoRa modules: Arduino 433MHz LoRa SX1278 long range RF wireless module DRF1278F | eBay

Stuart Robinson has written a library for the chip, and done extensive tests. The range is hard to believe! http://www.loratracker.uk/

5

Thanks for the link. It does not give dimensions but counting the connectors and assuming 1.5mm spacing they are probably about 18mm square.

That does not offer any size advantage over an nRF24L01+. The long range is of no particular interest. And they seem to be dearer.

I have some Deltang wireless devices that are about 12 x 22mm and contain the wireless, an Atmega 328 and a h-bridge. But they cost about £30. An Attiny 1634, nrF24 and Pololu DRV8833 driver together cost about £8. I am just hoping to get the size down.

By the way, I only picked on the SI4463 because it happens to be on the HC-12 module. The Deltang devices use a Cypress 2.4Ghz transceiver.

...R