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merbanan / rtl_433

Program to decode radio transmissions from devices on the ISM bands (and other frequencies)
GNU General Public License v2.0
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Alternative Chip #1927

Closed garudaonekh closed 2 years ago

garudaonekh commented 2 years ago

Hi, I am working on small scale agriculture project using RPI zero. SDR_RTL is more than 20$ which is nearly h the same price as RPI zero. I try to reduce budget as it is for farmers. Can we use cheaper chip like CC1101 or others?

zuckschwerdt commented 2 years ago

769 -- note that at least the cc1101 already demodulates data and can output message based data

940 -- feed ook data to rtl_443 -r OOK:-

garudaonekh commented 2 years ago

@zuckschwerdt thanks for your quick response, Before I post this issue, I saw the above two issues which mentioning CC1101 but I donot understand them

zuckschwerdt commented 2 years ago

The CC1101 (and similar) generally only work for one specific protocol. You need to configure that protocol, but then you don't need rtl_433 (and you don't need a SoC, a MCU will do)

What radio protocols are you expecting to receive?

My advice:

garudaonekh commented 2 years ago

[32] Fine Offset Electronics WH1080 and [195] rainPoint moisture sensor

zuckschwerdt commented 2 years ago

So, yeah CC1101 could work if you put the coding in. rtl_433 won't be needed.

keith721 commented 2 years ago

While waiting for a CC1101 module to arrive (a few weeks wait time, unfortunately) I happened upon a faster method for obtaining a reliable MICRF211 433 MHz receiver module: harvest one from an AcuRite 06002 weather sensor. It's a 3.3VDC intelligent receiver module. Data can be read either using an RPi with Python code, or an ESP8266 with C code or Arduino using a C sketch/code.

zuckschwerdt commented 2 years ago

Something mass-produced down to cost, readily available! True hacker spirit. But from the sensor really? Is there a MICRF211 receiver in there?

keith721 commented 2 years ago

Something mass-produced down to cost, readily available! True hacker spirit. But from the sensor really? Is there a MICRF211 receiver in there?

:( You are right, I jumped too soon. It's the MICR112 transmitter in the inexpensive sensor. The MICR211 receiver is in the base station. Oh well . . .