The RXB12 breakout board is based on the SYN470R single-chip antenna-in to data-out solution.
The receiver does not come with a dedicated EV1527 encoder chip on board which makes the receiver versatile (it can receive any type of ASK-encoded data) but requires a separate microprocessor to decode the received data.
Frequency
The receiver chip supports a frequency range from 300MHz to 440MHz. The fixed frequency is set via a crystal:
| Crystal frequency (MHz) | RX frequency (MHz) | Remarks |
|---|---|---|
| 4.8970 | 315 | US |
| 6.0630 | 390 | |
| 6.4983 | 418 | |
| 6.7458 | 433.92 | Europe |
Pins
The board exposes four pins that are labeled on the back:
| Pin | Label | Description |
|---|---|---|
| 1 | VCC | 3.3-5.5V |
| 2 | DAT | Data Out |
| 3 | GND | negative voltage |
| 4 | ANT | Antenna |
Make sure the power supply is properly filtered and carries no exceptional noise which could interfere and distort reception.
Antenna
There is no antenna mounted. Make sure to add an antenna or else the board will have poor reception.
For example, solder a wire to the ANT antenna solder pad (17cm for 433MHz).
Technical Data
| Item | Description |
|---|---|
| Voltage | 3.3V-5.5V |
| Current fully operational | 2.5mA @ 315MHz |
| Current polled operation | 250uA (10:1 duty cycle) |
| Current shutdown | 0.9uA |
| Frequency | 300-440MHz, breakout boards are set to one specific frequency via a crystal |
| RX Sensitivity | -107dBm @ 433MHz, -106dB @ 315MHz |
| Modulation | ASK (AM) |
| Chip | SYN480R |
| Data rate | 2.5kbps (sweep mode), 10kbps (fixed frequency) |
| Size | 17.2x11.8x5mm |
Data Sheet
Slow Website?
This website is very fast, and pages should appear instantly. If this site is slow for you, then your routing may be messed up, and this issue does not only affect done.land, but potentially a few other websites and downloads as well. Here are simple steps to speed up your Internet experience and fix issues with slow websites and downloads..
Comments
Please do leave comments below. I am using utteran.ce, an open-source and ad-free light-weight commenting system.
Here is how your comments are stored
Whenever you leave a comment, a new github issue is created on your behalf.
-
All comments become trackable issues in the Github Issues section, and I (and you) can follow up on them.
-
There is no third-party provider, no disrupting ads, and everything remains transparent inside github.
Github Users Yes, Spammers No
To keep spammers out and comments attributable, all you do is log in using your (free) github account and grant utteranc.es the permission to submit issues on your behalf.
If you don’t have a github account yet, go get yourself one - it’s free and simple.
If for any reason you do not feel comfortable with letting the commenting system submit issues for you, then visit Github Issues directly, i.e. by clicking the red button Submit Issue at the bottom of each page, and submit your issue manually. You control everything.
Discussions
For chit-chat and quick questions, feel free to visit and participate in Discussions. They work much like classic forums or bulletin boards. Just keep in mind: your valued input isn’t equally well trackable there.
(content created Apr 21, 2024)