The company OpenSmart released this ASK receiver with an unmarked receiver chip and poor documentation.
The receiver is sold as a kit together with a sender board and is available in separate versions for 315MHz (US) and 433MHz (Europe).
The actual receiver is located on a separate and much smaller board that is soldered onto a bigger bpard which only purpose apparently is to provide a PCB antenna.
While PCB antennas certainly are convenient and compact, they are not efficient, limiting the distance that can be reached. During build time and testing, make sure you do not touch the antenna or hold the breakout board in a way that covers the antenna.
The way how the receiver board is piggy-backed into a relatively huge antenna board makes this solution the most clumsy of all reviewed.
Apparently, the company OpenSmart uses these modules in various combinations together with other boards to make them wirelessly controllable. For example, OpenSmart also sells wireless joystick and sensor boards that use the same fundamental sender and receiver boards.
The company OpenSmart advertises this board as “Long-Range Receiver” and even as “LORA Board”. This board is neither able to receive RF signals over long distances nor does it implement LoRa modulation. It is simply a cheap and very simple ASK receiver.
The RF frequency of the board on is printed on the front side. The 433MHz version uses blue boards, and the 315MHz version uses red boards.
Technical Data
| Item | Value |
|---|---|
| Voltage | 2.0-5.5V |
| Frequency | 433MHz or 315MHz |
| Working Current | 2mA |
| Modulation Mode | AM (OOK) |
| Transmission Rate | 2 Kbps |
| Sensitivity | -110dBm |
| Transmission Distance | <50m at 5V |
| Size | 24x30x7mm |
Pins
The board comes with three pins.
| Pin | Tag | Description |
|---|---|---|
| 1 | SIG | Data In |
| 2 | VCC | 5V |
| 3 | GND | negative pole |
Library
The vendor suggests to use the VirtualWire software library.
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 18, 2024)