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18 Jul 2020 08:18:49 UTC
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VIDEO
TINYP
tinypico-radio-part-6-tinypico-mounted
In this video I have the Tiny mounted to a PCB which I created. I have the kicad project files here:
https://github.com/thaaraak/Tinypico-Radio/tree/master/kicad
I have decided to move away from using Eagle and onto Kicad. That change took a bit a pain!
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https://www.youtube.com/watch?v=wyRaee28-6Y
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1 year ago
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Controlling
VIDEO
ESP32
esp32-iot-radio-part-1-intro
In this video I start to build an IoT SDR using the ESP32.
For reference on the Tayloe detector and audio processing please refer to the Pyboard Radio I did earlier:
https://www.youtube.com/watch?v=I8ZwlgjXAZM&t=28s
This video contains details on setting up the ESP-IDF in eclipse
https://www.youtube.com/watch?v=Gl6FiF01iAE
I will be using this board:
https://www.amazon.com/ESP-WROOM-32-Development-Microcontroller-Integrated-Compatible/dp/B08D5ZD528/ref=sr_1_3?dchild=1&keywords=esp32+wroom&qid=1622209146&sr=8-3
I will dive into the ESP-ADF and the DSP audio processing in the next video which will be posted shortly
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https://www.youtube.com/watch?v=5SJu9pxArwM
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Controlling
VIDEO
YET A
yet-another-amplifier-20m-5w-irf510-ssb
In this quick video I walk through a 5W amplifier I built up based on this one from QRPGuys
https://qrpguys.com/wp-content/uploads/2019/08/miniboots_assy_052919.pdf
The github repo with the kicad and ltspice files is here
https://github.com/thaaraak/IRF510-Amplifier-v2
The schematic is here:
https://github.com/thaaraak/IRF510-Amplifier-v2/blob/main/IRF510-Amplifier.pdf
Gerber files here
https://github.com/thaaraak/IRF510-Amplifier-v2/tree/main/gerber
A technical article on Harmonic Trap filters is here:
https://www.internationaljournalssrg.org/IJEEE/2016/Volume3-Issue9/IJEEE-V3I9P102.pdf
0:00 Intro
0:33 Circuit walkthrough
2:49 Simulation of Filter in LTSpice
3:49 Pre-amp walkthrough
4:52 Walkthrough of Board
6:35 Some simple testing
7:57 Having a look at linearity with an AM signal
9:45 Wrap up
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https://www.youtube.com/watch?v=D4UhOmum_oU
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1 year ago
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Controlling
VIDEO
PHASE
phaser-build-part-7-building-the
This is the build for the optional enclosure for the Phaser kit.
A couple of notes:
- I forgot to mention putting on the 2 nylon spacers underneath the board you can see them at the right of the board at around 8:05
- I just realized you can use the two spare ribbon wires to attach the on/off switch to the board
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https://www.youtube.com/watch?v=xfothUauACU
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1 year ago
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VIDEO
ETHAN
ethan-at-quail-creek-shooting-dpms-ar-15
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https://www.youtube.com/watch?v=OqySqA8wEv0
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VIDEO
SDR T
sdr-transceiver-part-4-receiver-...-and
I this video I continue the SDR Transceiver series moving on to the Receiver
Here is the Transceiver github repo
https://github.com/thaaraak/SDR-Transceiver
Here is where all the sketches are
https://github.com/thaaraak/SDR-Transmitter
Here's the early SDR Receiver radio
https://www.youtube.com/watch?v=redvZ7LcXT0&t=1s
0:00 Recap and Intro
1:28 Board walkthrough
3:04 Another problem on the board
3:57 Testing Encoders
5:49 RF Switch
9:47 Installing the Band Pass Filter
11:34 Tayloe detector installed
12:15 Testing Tayloe detector
15:20 Testing sideband supression
16:48 Seeing the sideband suppression in FFT mode on scope
18:52 Some problems on the board
21:18 Comparing to the previous board (link above)
22:48 Not on the air! Troubleshooting to come (suggestions welcome)
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https://www.youtube.com/watch?v=G7O3vb2hSnQ
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VIDEO
NORCA
norcal-sierra-part-2-audio
K7QO's channel - https://www.youtube.com/channel/UC7CSitIbrMxj6jIldSWjJQg
Kits and Parts 1 watter - http://www.kitsandparts.com/1watter-V5.php
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https://www.youtube.com/watch?v=-c1BwHPU4pI
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1 year ago
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video/mp4
Controlling
VIDEO
RETRO
retro-sound-tech-programming-the-sn76489
In this video I do some programming with the SN76489 sound generator IC (and a bit of a channel update)
The SN76489 Manual http://www.vgmpf.com/Wiki/images/7/78/SN76489AN_-_Manual.pdf
The code is all up at
https://github.com/thaaraak/SN76489-Tester
A nice article on interfacing the SN76489 with Arduino
http://danceswithferrets.org/geekblog/?p=93
Here's where I got the ICs from (not affiliated in any way)
https://www.ebay.com/itm/10PCS-SN76489AN-DIP16-Digital-complex-sound-generator-D6/301723646982?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649
Sabar Multimedia (Laser Cutter youtube channel)
https://www.youtube.com/user/SarbarMultimedia
0:00 Intro and Channel Update
1:45 Some history and functional description
2:40 Pinout
3:54 The test circuit
7:36 Simple Chord Demo (three sound channels active)
9:00 Programming Tones
10:12 How to derive the data bits from desired frequency
11:41 Code walkthrough for Tones
13:55 Playing a simple scale
14:30 Code for the Chords
15:45 The attenuator
16:49 The output on the oscilloscope
19:27 The Noise Generator
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https://www.youtube.com/watch?v=D0wh5Cyvj8E
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1 year ago
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Controlling
VIDEO
TINYP
tinypico-radio-part-10a-fst3253-transmit
This is an additional video to Part 10 - the double balanced mixers. In this video I use the FST3253 Mux/Demux as a transmit mixer.
Schematics here:
https://github.com/thaaraak/Tinypico-Radio/tree/master/kicad/IQ%20Tayloe%20Mixer
The mixer is first testing via input from the Signal Generator and then using the Microphone Amplifier built in Part 11 of the series
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https://www.youtube.com/watch?v=wBuIS3qCd1k
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1 year ago
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video/mp4