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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

* Digital signal processing

* Hacker radio maken, signal special uitzending - (gmc/?)

<li>Signal Copier</li> <li>Signal Selector</li>

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

=== Bat box busy signal === ...sensor, to process the signal and present it as a USB audio device (stereo signal contains I and Q parts). See [[RadarOnAStick]].

...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