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This page is about synthesizing a LoRa signal such that it can be "played" back using a software-defined-radio with trans The desired end result is that the transmitted LoRa signal is compatible with and can be received with existing LoRa hardware.

10 megabits per second, or 10-Base-T is using manchester-coding, a simple signal with an embedded clock. ...is converted to a 2.5 MHz, 4-bit parallel signal, or 5 MHz, 2-bit parallel signal.

...t and right channels represent the I and Q components of the complex radar signal respectively, ready for further processing, e.g. complex FFT to separate th ...nuradio.org GnuRadio] framework to process and visualize the complex radar signal.

...he whole thing portable, without the need for an external oscilloscope and signal generator * Make sure that an arduino based scope can observe the signal.

* Receive a simple wireless microphone signal from the presenter * Understand a few basic concept of radio signals, signal processing, and software-based radio signalprocessing in particular.

* 10 Mar 2011 - [[http://signal.hackerspaces.org Signal]] * 17 Mar 2011 - [[http://signal.hackerspaces.org Signal]]

Combine a directional microphone with a megaphone and a Raspberry Pi for the signal processing. Have the megaphone broadcast the sound collected through the di *Doing the signal processing software, has anyone ported PureData to ARM yet?

...lusion that the center pin was used for a "Luminance" signal, and that the signal also included sync, so this seemed to be a PAL composite (monochrome) outpu

[[Category:Signal]]

This project is about signal processing of bat echolocation audio recorded through a pair of ultrasonic * one cycle of a 40 kHz bat signal consists of '''6''' samples

...ogether and connected to the coax under test via the SMA. I'm just using a signal generator to provide the first schmitt trigger with a square wave, but you

...vel-converter boosts the pulse waveform to about +10 and -10V for a strong signal into the transmitter transducer ...eceive side, a TL074/LM324 quad opamp is used to amplify the received echo signal

If the signal must be received in a certain space, one can make two loops at any two oppo To get an idea of signal distribution and decay, use this: https://www.falstad.com/vector3dm/ ("curr

...ft; padding-right: 0.5em; padding-bottom: 0.5em;" />Last thursday, [http://signal.hackerspaces.org/archive/2010-08-26-2200-dub-and-dubious-politics.ogg the f The show aired on the digital radio station [http://signal.hackerspaces.org Signal], the hackerspace radio. Every thursday between 22:00 CEST and 00:00 CEST,

-Accepts line-ish level or piëzo contact microphone signal on the input.

SIGNAL\r

In order to be able to make live radio for [http://signal.hackerspaces.org/ Signal], and because we can, we have a radio studio in the space. It is sharing a

! Signal | D2 || ZG-C || ZG01 clock signal

...on is that the smoothing capacitor has been removed, resulting in a 100 Hz signal going into the optocoupler (a pulse during each zero crossing). An interrupt is generated for each falling edge of the signal coming out of the optocoupler. This happens during the zero crossing, so tw

...ed on audio and [http://signal.hackerspaces.org/echtehackers/ available on Signal]. Most of the sessions are in Dutch, but the talk by MEP for the Swedish Pi

At the top of the spectrogram you see the data portion of the signal, consisting solely of up-chirps. ...ed by a Semtech chip. This allows for a more compact representation of the signal for analysis.

** hansg: support voor image signal processor (camera) in favoriete skere tabletSoCjes, nog maar ~200 patches t

It appears the Altera chip drives two 245 chips which in turn drive the signal to the connector J1 to the LED board. * J1.1: IC2.A1 -> IC2.B1 -> via ... -> SRCLK signal of both column shift registers

...hat the ADS-B signal arrived at the different receiver stations (the radio signal moves at the speed of light!).

| 1N4148 || 500 || small signal diode || 368106 || 2.00 |BC547 || 200 || small signal NPN BJT, higher voltage then BC558 || || || availible need to count

...room antenna, to transmit a low-power GNSS signal that is a copy of a GNSS signal picked up on the roof. The signal is intended only for devices present in the room.

...t is still quite finicky and still not sensitive enough and needs a lot of signal to work properly.

* SCL signal from I2C * SDA signal from I2C

* 9 Sep 2010 - Broadcast [[http://signal.hackerspaces.org/ Signal]] Hackerspace Hour

* PWM, the laser tube intensity signal A low-pass filter is needed to average the PWM-signal before measuring it.

A signal that is reflected by an object in the view of the radar, will arrive back a Because of the delay, the outgoing signal will have already changed in frequency compared to the incoming reflected f

...measurement of the VL53L0X module is based on time-of-flight of the laser signal reflecting off a surface. ..." of 0.25 (I guess this is a measure for the amplitude of the laser return signal)

...for the people looking to quantize frequency response, but the space has a signal generator for that.

...noise in the earpiece that disappears when you probe either a low or high signal, and the yellow LED then turns off too. Connecting it via some impedance to

...sty pulses a diode detector is used. The next NAND buffers and inverts the signal. Here we have a nice continuous HIGH level when the soil is too dry and a L

Sending power signal to pin: 6

...formation about the particular gateway that received your signal, received signal strength and with what settings (bandwidth, spreading factor) your packet w ...feature (which is AFAIK not used in LoraWAN), I guess you can ignore that signal.

...ed that the LM386 speaker driver used to buffer/amplify the Cassette input signal was completely unnecessary. All Barrel and jack plug connectors were replac ...h to another game to load, and J3 is to start playback. J4 is the cassette signal output, internally connected to the EAR input jack. J5 is not used in a Spe

...across the diode, which is then amplified by a jfet and a dual opamp. This signal is fed into the comparator, triggering an LED and causing the buzzer to emi

...imal bat call recorder: just add an analog preamplifier for the ultrasonic signal (+ a lot of software!).

...ach millisecond by summing the squared amplitude of the high-pass filtered signal over this millisecond. Perhaps we can also just calculate variance here and

A nodemcu (ESP8266) reads the fan state signal and forwards it over WiFi to the revspace MQTT stream on topic revspace/int

# A USB audio card to create the analog ultrasonic signal # An amplifier to amplify the ultrasonic signal

...te, the device transmits periodic beacon packets. You can use the received signal strength of these to find how to get closer to the device.

! Pin !! Signal Firmware measures only a part of the response signal: 180..980 ms interval in 10ms steps. It integrates 180..680 ms interval and

...day) it wakes up, takes a reading of all WiFi stations in range and their signal strength. It stores these in internal memory. ...a level-like signal (low if the alarm has triggered). You cannot tie this signal to the ESP reset pin because it would keep the ESP in reset indefinitely. T

:2014-??-??: The LNA4ALL amplifying the discone signal broke down :( ...give a slightly better signal-noise ratio and allow us to split the radio signal out to several receivers so we can capture several kinds of signals at once

...the encoder isn't running too fast, so that the bit-period of the encoded signal will be relatively long (slow), but seeing that a typical PT2262 encoder fr

...estimated total inductance of about 1 uH, it is center-tapped to the TVSS signal.

...by a laser beam. The scatter patterns are picked up by a photo-diode which signal is amplified and then fed to a micro-controller. The micro-controller inter

...ay 4.98V then I checked reset it was high as it should. I tested the clock signal,with an oscilloscope and it ran. saw 3.25MHz on the CPU, so no problem ther ...ut of U11A pin 3, and still I saw no problems, then I tried to measure the signal on 88, and when I put my scope probe on R49 suddenly the screen turned whit

...ifi throughput is good, even at the other end of our space, so in terms of signal and bandwidth it easily outperforms the access point that we already had.

* Maybe write some more safety features, like something to detect loss of signal with nunchuck or Gametrak, and prevent immediate acceleration. Or maybe slo

I also discovered that the board generated a composite (monochrome) video signal, meaning I could hook it up to a test monitor. ...pply reset signal kept it in reset, once I supplied the power supply reset signal, by tying an inverter input low, (a wire over the input capacitor on the bo

...erator, as the clock of the ZX81+35 could also "randomly" double its clock signal to 6.5MHz (I consider changing that in the definitive version, so the outpu ...evels up-to 3v3, which is fine for the PSG (AY-3-8912), witch just needs a signal between 2.5V and 5V, but the PSG can output 5V levels (when the GPIO port i

* select a row by making one ROW signal high: choose ROW_H_x if you want to set a pixel, or ROW_L_x if you want to

...onitor I connected claims the actual VGA resolution of the generated video signal is 640 x 480 @ 60Hz, so it seems the vertical resolution is cropped, and in ...le I feel its not yet ready, as I have a problem generating a stable video signal when running in turbo mode (220% faster). Probably due to switching the clo

...with enormous gain, up to six orders of magnitude or more, resulting in a signal that can be measured and recorded. ...cintillator, making it possible to verify with some certainty that a given signal is actually the result of photon emission in the scintillator, which is gre

...jack" game. Because I'm interested in the technology behind creating a VGA signal with a micro-controller and (almost) no external hardware (I'm planning to ...rmously. For the moment I'm still staying with generating a monochrome PAL signal. I don't want to succumb to feature creep, in the interest of simplicity an

...forgot to insert a limiting resistor in /IORQ, but moved it to the /BUSACK signal where it isn't really needed. This will necessitate a patch!

//Timeout! Signal used to disable sound generation is setting cntAC to max.

...tput component video that could be fed to an upscaler that generated a VGA signal. I already picked up a small VGA monitor, but for MSXGOTO40 this solution == The adapter works and gives a good VGA signal ==

...d if you looked carefully you could also see intensity faults in the video signal. I decided that combining the power and signal ground wires was a bad idea, and decided that adding a fifth wire was a nec

*an ethernet PHY that does the actual ethernet analog signal conversion

...e memory, sensors and processing capability. The chip communicates using 1 signal and 1 ground wire, connected to the top and sides of the can. By pressing t

* With three waveforms around the ring, the ring represents 60 ms of mains signal

//Timeout! Signal used to disable sound generation is setting cntAC to max.

Mod by Morphje: Range increased to 400+ meter open air range. Signal quality on IBM laptop was 43% @ 400 meter.

# Compatible with modern TV's thanks to better digital sync signal generation, giving sharp stable and high contrast pictures. # Composite video (PAL or NTSC) output signal instead of RF signal, for even sharper picture, compatible with yellow RCA inputs, and SCART

...hat are between the DAC and the amplifier to make this a combined low+high signal.

...EXOR as during VSYNC HSYNC pulses actually appear as inverted in the VSYNC signal, but perhaps I should check my logic here carefully. ..., I corrected some labels where I used the backslash to denote in inverted signal, instead of the lowercase "n" I used everywhere else.

* The lamp determines its location by based on signal strength and BSSID of nearby WiFi base stations.

...ro controller and a tiny bit of hard and software you could create a video signal. And Jim had come up with his own similar scheme that would only use as muc

...ro controller and a tiny bit of hard and software you could create a video signal. And Jim had come up with his own similar scheme that would only use as muc

...ot for each GPIO pin, as a limitation that prevented it to generate an SPI signal using the AY-3-8912 GPIO's.This was a problem as turning the GPIO's to inpu

...NEC, and sends a 32-bit code for the first press, and then 0-bit codes to signal the same key is still down. As usual only the lower 4 bits seem to be varia

The I2S clock signal is 64 times higher than the sample clock, so at a sample rate of 44100 Hz,

...clock out a video stream, to try to generate a 320 x 200 (monochrome) VGA signal, using a Arduino nano as a CRTC surrogate. Then continue from there. Also these tech-demo's create a quite a low resolution video signal, which doesn't satisfy me.

...evspace.nl/User:Mux mux]. By request you can get his e-mail, phone number, Signal, Hangouts, whatever you like. Just ask on IRC or in person, or any other wa

...ing in black sections of the video traces at random locations in the video signal. The only other system that had no video arbitration logic AFAIK was the or

...a Covox Speech Thing clone, but less ugly. The output is a pure line level signal. It won't drive headphones and really needs an amplifier. But it works grea

...same one as used in the Vortex. Would be good to figure out if the 'busy' signal and/or the serial TX are connected back to the arduino somewhere in that ca