Embedded Files
Ranging from the 3rd floor to the cellar (concrete building, wire antennas)
- with preinstalled universal high performance receiver featuring collision detection and error correction of anomalies like spikes, drops and outliers.
- with preinstalled universal high performance receiver featuring collision detection and error correction of anomalies like spikes, drops and outliers.
- the unprecedented capabilities of the preinstalled receiver rely on software presented on https://sites.google.com/view/ookraw (powerpoint presentation)
- the unprecedented capabilities of the preinstalled receiver rely on software presented on https://sites.google.com/view/ookraw (powerpoint presentation)
Fig. 1: 434 / 868 MHz Hope-RFM69-Arduino Box (ca. 53x43x7 mm)
Confronted with On-Off Keying (OOK) Interoperability / Interconnectivity, Compatibility, Legacy ?
Confronted with On-Off Keying (OOK) Interoperability / Interconnectivity, Compatibility, Legacy ?
... for example because your remote -sensor/-controller is not supported by products from manufacturers like
RFXCOM, TELLDUS, RFLINK, SONOFF, JEELINK, DRAGINO ...
Fig. 2 : inside the SD card box
The tiny box of fig.1, ca. 53x43x7 mm, contains all you need:
1 Hope rfm69w 434 MHz (adjustable)
1 Hope rfm69w 868 MHz (adjustable)
1 Arduino compatible mini pro 3.3V (MEGA328P)
Has the potential to support virtually all OOK modulated Home Automation devices on the market
Has the potential to support virtually all OOK modulated Home Automation devices on the market
The standard Dupont connectors provide a cost effective interface to your :
The standard Dupont connectors provide a cost effective interface to your :
USB-Serial cable/dongle (FTDI, Prolific)
raw power supply (Vin max. 12VDC)
antenna equipment (can consist of simple wires)
No soldering required.
Ready for use
with pre-installed receiver program.
Fig. 3 : Standard Dupont connectors
The key to true universal home automation is raw data !
The key to true universal home automation is raw data !
The bad news: too much incompatible equipment is already on the market, each implementing its own proprietary protocol.
The good news: all of these devices use the same basic scheme of
pulse-width encoding (PWM/PDM) <=> On-Off Keying (OOK)
pulse-width encoding (PWM/PDM) <=> On-Off Keying (OOK)
Fig. 4 : USB cable with snap-on Ferrite cores
The pre-installed receiver should prove that you can receive OOK modulated data
The pre-installed receiver should prove that you can receive OOK modulated data
from any device of any manufacturer.
from any device of any manufacturer.
Interested to test with your own equipment?
Interested to test with your own equipment?
. . . or interested in a takeover of the project?
. . . or interested in a takeover of the project?
Please contact: felix(dot)baessler(at)gmail.com
Please contact: felix(dot)baessler(at)gmail.com
Example output from the receiver :
Example output from the receiver :
intertechno ITK-200 (protocol sequence 100011000110 "off")
Sequence
HIGH: 01000000010100000001010000100000001010000000101000
LOW : 10111111101011111110101121011111110101111111010112
Categories (polling-cycles)
ind : 0 1 2
HIGH: 264 816;
LOW : 308 858 9156;
doorbell button (unknown manufacturer)
Sequence
HIGH: 1111110010010111111001001011111100100101111110010010
LOW : 000001101102000000110110200000011011020000001101102*
Categories (polling-cycles)
ind : 0 1 2
HIGH: 330 662;
LOW : 334 670 11898;
weather station? (located in the neighborhood)
Sequence
HIGH: 111000010001001100101101000000100010000111001011110000110011000002 /
111 000010001001100101100100000100010000111001011110000110010001002 /
11100001000100110010110100000010001000011100101111000011001001 0002
LOW : 11001000010010100110110010000000100000111001011111000010101001000* /
11 001000010010100110110010000000100000111001011111000011000010100* /
1100100001001010011011010000000010000011100101111100001001100 0100*
Categories (polling-cycles)
ind : 0 1 2
HIGH: 362 750; 74
LOW : 408 786; 43578
Note the two blanks indicating drops that have been corrected by the receiver.
As a byproduct, the pre-installed receiver measures the noise of your environment(*) in function of the chosen sensitivity.
As a byproduct, the pre-installed receiver measures the noise of your environment(*) in function of the chosen sensitivity.
(*) laptops etc. are notorious RF polluters
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