# Chris Bake # Web Based VIC # 1-10 Channel Analog Amplitude Modulator [![265079631_3195161367363934_1991161274925674298_n.png](http://stanslegacy.com/uploads/images/gallery/2022-06/scaled-1680-/sG8Y1dqkrzQO4OI3-265079631-3195161367363934-1991161274925674298-n.png)](http://stanslegacy.com/uploads/images/gallery/2022-06/sG8Y1dqkrzQO4OI3-265079631-3195161367363934-1991161274925674298-n.png) [![WFC-Waveform-Generator (1).png](http://stanslegacy.com/uploads/images/gallery/2022-06/scaled-1680-/6c0obEebyYYRJojJ-wfc-waveform-generator-1.png)](http://stanslegacy.com/uploads/images/gallery/2022-06/6c0obEebyYYRJojJ-wfc-waveform-generator-1.png) # ESP32 Rest API, Pulse Clock & VIC Configurator # Phase Selectable VIC Utilizing DPDT toggle switches to allow inline phase inversion of each VIC component allow significant selectivity in operational configurations. 450VDC push-pull EL34 vacuum tube driven VIC 4:1 stepdown ferromagnetic core Earlier version of above, but with an added DPDT relay driven by a 3rd signal input and darlington driver, attempting the Crossover Voltage Switching utilized in the Steam Resonator. With the monster transformer in there, I would get a very strange buildup of electrostatic vibrations on the metal chassis. No vibrations were felt on the plastic of the meter panels, but everywhere on the metal parts. # CrayonXA (My First 9XA) Learning transistors, power supplies, 555 timers, Schmidt Triggers, AND gates, darlington transistors and optocouplers all in one shot. It still amazes me this ever worked :) The circuit for this design originated from [Max Miller's 9XA](http://irondmax.com/pdf/ProjectIcarus.pdf) (drawn in crayon)
[![240662288_4705169929505824_3723763710195030686_n.jpg](http://stanslegacy.com/uploads/images/gallery/2022-06/scaled-1680-/SOVr9QE15JbSjfUb-240662288-4705169929505824-3723763710195030686-n.jpg)](http://stanslegacy.com/uploads/images/gallery/2022-06/SOVr9QE15JbSjfUb-240662288-4705169929505824-3723763710195030686-n.jpg)[![255806338_4705169809505836_119894751386171394_n.jpg](http://stanslegacy.com/uploads/images/gallery/2022-06/scaled-1680-/ng4cjLDZ1ZZuLOpg-255806338-4705169809505836-119894751386171394-n.jpg)](http://stanslegacy.com/uploads/images/gallery/2022-06/ng4cjLDZ1ZZuLOpg-255806338-4705169809505836-119894751386171394-n.jpg)
[![77026487_2720040918018745_400836674826797056_n (1).jpg](http://stanslegacy.com/uploads/images/gallery/2022-06/scaled-1680-/fZaWqHktg8MjxfZz-77026487-2720040918018745-400836674826797056-n-1.jpg)](http://stanslegacy.com/uploads/images/gallery/2022-06/fZaWqHktg8MjxfZz-77026487-2720040918018745-400836674826797056-n-1.jpg)
[Max Millers' 9XA![image-1656200942895.49.00.png](http://stanslegacy.com/uploads/images/gallery/2022-06/scaled-1680-/7Gg3xEPmyRl4M31B-image-1656200942895-49-00.png)](http://stanslegacy.com/uploads/images/gallery/2022-06/7Gg3xEPmyRl4M31B-image-1656200942895-49-00.png) A funny video illustrating how I still had much to learn about building circuits :) More progress on the 9XA. Learning how proper transistor biasing and loading is important for controlling amplitude modulation. # Crossover Voltage Switch [![109308463_3285262641496567_1211971226813383673_n.jpg](http://stanslegacy.com/uploads/images/gallery/2022-06/scaled-1680-/ENFGcmHuGjdqHbv2-109308463-3285262641496567-1211971226813383673-n.jpg)](http://stanslegacy.com/uploads/images/gallery/2022-06/ENFGcmHuGjdqHbv2-109308463-3285262641496567-1211971226813383673-n.jpg) # 8XA Alternator Setup This was an old attempt at using an unrectified alternator's 3 phase output running from a 1/3 HP AC synchronous motor. # DIY EMF Detector Easy homemade EMF probe. I added a piezo buzzer to mine, and found it very helpful to "listen" to the fields coming off of things like wires and HV bulbs, and water capacitors.

**DIY Guide**: [https://www.instructables.com/Make-a-Ghost-Detector/](https://www.instructables.com/Make-a-Ghost-Detector/)

[![F2VE0JKJ153YCTJ.webp](http://stanslegacy.com/uploads/images/gallery/2022-06/scaled-1680-/mspBJd7o7Nk3y2D1-f2ve0jkj153yctj.webp)](http://stanslegacy.com/uploads/images/gallery/2022-06/mspBJd7o7Nk3y2D1-f2ve0jkj153yctj.webp) # Magnetic Amplifiers # Saturation Oscillator

You must *listen* to your energy. It plays notes. Once you learn to trigger those notes, you can play a chord.

Playing with distributed inductances and capacitances and harmonics generated from 60 Hz line noise. Using resistive dampening to load mutually coupled transformers inline with the magnetic amplifier's reactive side. # Magamp LFO standing wave oscillator # Introducing harmonics into Amplitude Modulation # Bubbles # Everything Vibrating in a WFC This shows Max's Double Barrel cell holder adapted to mount electrodes at opposing ends of each tube. Tiny streams of nanobubbles can be seen coming from the bolt threads # Demonstrating High Voltage present at the WFC ##### "Waterless" energy transfer ##### Visualizing standing waves occurring across the WFC capacitor. # 4 Channel 12AX7 Toroidal Amplitude Modulator Early Build pics of the 4 Channel modulator.
[![133798005_3767217696634390_7095165259752784715_n.jpg](http://stanslegacy.com/uploads/images/gallery/2022-06/scaled-1680-/Br7jTZdMwEqqqThb-133798005-3767217696634390-7095165259752784715-n.jpg)](http://stanslegacy.com/uploads/images/gallery/2022-06/Br7jTZdMwEqqqThb-133798005-3767217696634390-7095165259752784715-n.jpg) [![134047555_3767217633301063_1100532127399627698_n.jpg](http://stanslegacy.com/uploads/images/gallery/2022-06/scaled-1680-/DAuPb2JAXEN1Eh0X-134047555-3767217633301063-1100532127399627698-n.jpg)](http://stanslegacy.com/uploads/images/gallery/2022-06/DAuPb2JAXEN1Eh0X-134047555-3767217633301063-1100532127399627698-n.jpg)
[![133600591_3767218093301017_8668741515042871589_n.jpg](http://stanslegacy.com/uploads/images/gallery/2022-06/scaled-1680-/x9hGxkifCOZ4SCES-133600591-3767218093301017-8668741515042871589-n.jpg)](http://stanslegacy.com/uploads/images/gallery/2022-06/x9hGxkifCOZ4SCES-133600591-3767218093301017-8668741515042871589-n.jpg) [![133708014_3767218326634327_3937906867011726984_n.jpg](http://stanslegacy.com/uploads/images/gallery/2022-06/scaled-1680-/fIFTguWRq1yjXP1X-133708014-3767218326634327-3937906867011726984-n.jpg)](http://stanslegacy.com/uploads/images/gallery/2022-06/fIFTguWRq1yjXP1X-133708014-3767218326634327-3937906867011726984-n.jpg)
# 12AX7 Dual Triode operating in Heptode Mode Truly Analog Amplitude Modulation AND Gating [![125466214_3650706548285506_994606898162063674_n.jpg](http://stanslegacy.com/uploads/images/gallery/2022-06/scaled-1680-/YIcm858HctYjx3Ly-125466214-3650706548285506-994606898162063674-n.jpg)](http://stanslegacy.com/uploads/images/gallery/2022-06/YIcm858HctYjx3Ly-125466214-3650706548285506-994606898162063674-n.jpg) # 50W PushPull Tube Amp for driving a VIC [![74176231_2666543493368488_4586020633896288256_n.jpg](http://stanslegacy.com/uploads/images/gallery/2022-06/scaled-1680-/o6B2qAzwlwbpXhjj-74176231-2666543493368488-4586020633896288256-n.jpg)](http://stanslegacy.com/uploads/images/gallery/2022-06/o6B2qAzwlwbpXhjj-74176231-2666543493368488-4586020633896288256-n.jpg) [![73019663_2666543533368484_3939437153141915648_n.jpg](http://stanslegacy.com/uploads/images/gallery/2022-06/scaled-1680-/KDKdOtkGg8UoEghw-73019663-2666543533368484-3939437153141915648-n.jpg)](http://stanslegacy.com/uploads/images/gallery/2022-06/KDKdOtkGg8UoEghw-73019663-2666543533368484-3939437153141915648-n.jpg) # Arduino / ESP32 Projects # ESP32 - Complex Waveform Generator [LEGACY] ### Setting Up The App ##### Modify ESP C+ Code to configure local network settings 1. 1. Determine your local network's Subnet range (It should be one of these: 10.0.0.0/8, 192.168.0.0/16, or 172.xxx.xxx.xxx) 1. See: [https://www.businessinsider.com/how-to-find-ip-address-of-router](https://www.businessinsider.com/how-to-find-ip-address-of-router) 2. Write down the address of your Gateway (your Router's IP address) 2. Find a free DHCP issued internal IP address on your local network (Guess an IP not in use by picking a number between 100 and 255 for the very last position in your subnet: 192.168.1.xxx) 3. Find your WIFI SSID and Password 1. SSID = The name of your Wifi Connection as your Phone or PC would see it on the network connection browser 2. Password = Your Wifi Password 4. Configure the IP, Gateway and your Wifi SSID & credentials into the ESP code below 1. Preview Of areas to change in code below: ```C++ // #### Change Me #### const char *SSID = "NETGEAR"; const char *PWD = "12345678"; // Don't Change Me const char *ASSET_HOST = "https://wavegenjs.s3.amazonaws.com"; // Web server running on port 80 WebServer server(80); // #### CHANGE ME #### // Set your Static IP address IPAddress local_IP(192, 168, 1, 8); // Set your Gateway IP address IPAddress gateway(192, 168, 1, 1); ``` 5. Copy the full script (down below) and paste it into your Arduino IDE 1. See: [https://randomnerdtutorials.com/how-to-install-esp8266-board-arduino-ide/](https://randomnerdtutorials.com/how-to-install-esp8266-board-arduino-ide/) 6. Compile and Upload the code to the ESP32 1. Install required libraries (FreeRTOS, ArduinoJSON, Wifi, and WebServer.) 1. See: [https://docs.arduino.cc/software/ide-v1/tutorials/installing-libraries](https://docs.arduino.cc/software/ide-v1/tutorials/installing-libraries) 2. [![298171574_5523327307690078_4273704313364637631_n.jpg](http://stanslegacy.com/uploads/images/gallery/2022-08/scaled-1680-/dm3BHay59TS8NGay-298171574-5523327307690078-4273704313364637631-n.jpg)](http://stanslegacy.com/uploads/images/gallery/2022-08/dm3BHay59TS8NGay-298171574-5523327307690078-4273704313364637631-n.jpg) 3. [![298253535_5523321941023948_4638314484689292979_n.jpg](http://stanslegacy.com/uploads/images/gallery/2022-08/scaled-1680-/SCMvDM6ZTF2gTCWJ-298253535-5523321941023948-4638314484689292979-n.jpg)](http://stanslegacy.com/uploads/images/gallery/2022-08/SCMvDM6ZTF2gTCWJ-298253535-5523321941023948-4638314484689292979-n.jpg) 2. Observe the Serial Monitor Log output from the Arduino IDE 3. Confirm network connectivity was established with your router. 7. Connect 2 separate Oscilloscope probes to pins "0" and "2" to ground, on your ESP. 8. Open a web browser on a computer connected to the same internal network as the ESP was given 1. Go to the ESP's given IP Address: [http://192.168.1.8](http://192.168.1.8) 9. Enjoy! (if it works) ##### Troubleshooting: View the Console Log for errors in your browser while clicking the app's sliders buttons etc.. [![Screenshot from 2022-08-06 13-24-55.png](http://stanslegacy.com/uploads/images/gallery/2022-08/scaled-1680-/VUxhtVg24Ps11Wlw-screenshot-from-2022-08-06-13-24-55.png)](http://stanslegacy.com/uploads/images/gallery/2022-08/VUxhtVg24Ps11Wlw-screenshot-from-2022-08-06-13-24-55.png)

[https://www.browserstack.com/guide/inspect-element-in-chrome#:~:text=One%20of%20the%20easiest%20ways,%2C%20Sources%2C%20and%20other%20tools](https://www.browserstack.com/guide/inspect-element-in-chrome#:~:text=One%20of%20the%20easiest%20ways,%2C%20Sources%2C%20and%20other%20tools).

Confirm the ESP is a connected host in your network and was given the IP you specified

[https://www.wikihow.com/See-Who-Is-Connected-to-Your-Wireless-Network](https://www.wikihow.com/See-Who-Is-Connected-to-Your-Wireless-Network)

#### ESP C+ Code
Expand ```C++ #include #include #include #include #include TaskHandle_t pulseTaskHandle; // #### Change Me #### const char *SSID = "NETGEAR"; const char *PWD = "12345678"; // Don't Change Me //const char *ASSET_HOST = "https://wavegenjs.s3.amazonaws.com"; const char *ASSET_HOST = "http://192.168.1.2"; // Web server running on port 80 WebServer server(80); // #### CHANGE ME #### // Set your Static IP addres IPAddress local_IP(192, 168, 1, 8); // Set your Gateway IP address IPAddress gateway(192, 168, 1, 1); IPAddress subnet(255, 255, 255, 0); IPAddress primaryDNS(8, 8, 8, 8); //optional IPAddress secondaryDNS(8, 8, 4, 4); //optional // JSON data buffer StaticJsonDocument<500> jsonDocument; char buffer[500]; // env variable float width = 150; float space = 150; float width1 = 0; float space1 = 0; float widthelongationmodifier = 1; float spaceelongationmodifier = 1; float gate = 1; int count = 5; int enablegate = 1; int channels = 2; int reference1 = LOW; int reference2 = HIGH; int enablealternate = 0; int invertOne = 0; int invertTwo = 0; int ch1lastState = LOW; int ch2lastState = LOW; void connectToWiFi() { Serial.print("Connecting to "); Serial.println(SSID); // Configures static IP address if (!WiFi.config(local_IP, gateway, subnet, primaryDNS, secondaryDNS)) { Serial.println("STA Failed to configure"); } WiFi.begin(SSID, PWD); while (WiFi.status() != WL_CONNECTED) { Serial.print("."); delay(500); } Serial.print("Connected. IP: "); Serial.println(WiFi.localIP()); } void setup_routing() { server.enableCORS(); server.on("/metrics", getMetrics); server.on("/set", HTTP_POST, handlePost); server.on("/", getIndex); server.begin(); } void create_json(float width, float space, float count, float gate, float enablegate, float channels, float widthelongationmodifier, float spaceelongationmodifier, float enablealternate, int invertOne, int invertTwo) { jsonDocument.clear(); jsonDocument["width"] = width; jsonDocument["space"] = space; jsonDocument["widthelongationmodifier"] = widthelongationmodifier; jsonDocument["spaceelongationmodifier"] = spaceelongationmodifier; jsonDocument["count"] = count; jsonDocument["gate"] = gate; jsonDocument["enablegate"] = enablegate; jsonDocument["channels"] = channels; jsonDocument["enablealternate"] = enablealternate; jsonDocument["invertOne"] = invertOne; jsonDocument["invertTwo"] = invertTwo; serializeJson(jsonDocument, buffer); } String getHtml() { String ptr = " \n"; ptr +="\n"; ptr +="ESP32 Complex Waveform Generator\n"; ptr +=""; ptr +=""; ptr +=""; ptr +=""; ptr +="
\n"; return ptr; } void getIndex() { server.send(200, "text/html", getHtml()); } void getMetrics() { create_json(width, space, count, gate, enablegate, channels, widthelongationmodifier, spaceelongationmodifier, enablealternate, invertOne, invertTwo); server.send(200, "application/json", buffer); } void handlePost() { if (server.hasArg("plain") == false) { Serial.println("no plain mode"); } String body = server.arg("plain"); deserializeJson(jsonDocument, body); width = jsonDocument["widthtotal"]; space = jsonDocument["spacetotal"]; widthelongationmodifier = jsonDocument["widthelongationmodifier"]; spaceelongationmodifier = jsonDocument["spaceelongationmodifier"]; count = jsonDocument["count"]; gate = jsonDocument["gatetotal"]; enablegate = jsonDocument["enablegate"]; channels = jsonDocument["channels"]; invertOne = jsonDocument["invertOne"]; invertTwo = jsonDocument["invertTwo"]; enablealternate = jsonDocument["enablealternate"]; serializeJson(jsonDocument, buffer); server.send(200, "application/json", buffer); } void customDelay(long delayValue) { long i = 0; int x = 0; for(i=0;i # ESP32 - Complex Waveform Generator V2 #### Setting Up The App

ESP32 Complex Waveform Generator - Arrangement for WROOM-32 or WROVER-E (DevKit-C)

##### ##### PARTS Required - 1 - ESP32 (WROOM-32 or WROVER-32) with 16 exposed pins - 1 - ESP32 Breakout Board or equivalent pin header block - 7 - Rotary Encoders (i.e. KY-040 Rotary Encoder Module CYT1062) - TODO: add >= 2 more for Elongation adjustments. - 1 - +5VREG 1A Power Supply for ESP32 (i.e. ATX PowerSupply) ##### Installation Prerequisites Install ESP Libraries in Arduino-IDE v2.0 ```MarkDown ArduinoJson ESP32Encoder ``` ##### Step 1. Open Esp32Full.ino and set Wifi Credentials ``` // #### Change Me - Local Wifi Info #### const char *SSID = "NETGEAR"; const char *PWD = "12345678"; ``` ##### Step 2. Configure free local LAN IP address Check your Router for more information ``` // #### CHANGE ME #### // Set your Static IP address to a free IP in your local network IPAddress local_IP(192, 168, 1, 8); // Set your Gateway IP address IPAddress gateway(192, 168, 1, 1); IPAddress subnet(255, 255, 255, 0); IPAddress primaryDNS(8, 8, 8, 8);   //optional IPAddress secondaryDNS(8, 8, 4, 4); //optional ``` ##### Step 3. Configure ESP\_HOST in Javascript File Edit `./assets/espwavegen.js` and set the IP address used in Step 2 above.

TODO: Make configurable in the web interface

Save and close the file ##### Step 3. Upload The code in `Esp32Full.ino` Paste the code into your Arduino-IDE and upload it to your ESP32

[Installing the ESP32 Board in Arduino IDE](https://randomnerdtutorials.com/installing-the-esp32-board-in-arduino-ide-windows-instructions/ "Installing the ESP32 Board in Arduino IDE")

##### Step 4. Access the WebApp in your Web Browser Open Web Browser Open `index.html` in the `WebApp` directory below this file - File -> Open -> Browse to WebApp/index.html -> Open Interface is now displayed! #### Step 5: Enjoy!! Please post pics and videos of your waves, and let others know how achievable this is! [![Screenshot from 2022-12-31 13-23-07.png](https://stanslegacy.com/uploads/images/gallery/2022-12/scaled-1680-/uaaVo1B7ToYrI4Lr-screenshot-from-2022-12-31-13-23-07.png)](https://stanslegacy.com/uploads/images/gallery/2022-12/uaaVo1B7ToYrI4Lr-screenshot-from-2022-12-31-13-23-07.png) #### Need Amplification?

See: [ESP32 - Complex Waveform Generator - Driver & Amplification](https://stanslegacy.com/books/chris-bake/page/esp32-cwg-driver-amplification)

#### [![Esp32-Encoder-Setup (5).png](https://stanslegacy.com/uploads/images/gallery/2022-12/scaled-1680-/qqNXcCwadrtae9wk-esp32-encoder-setup-5.png)](https://stanslegacy.com/uploads/images/gallery/2022-12/qqNXcCwadrtae9wk-esp32-encoder-setup-5.png) #### #### Additional Troubleshooting / Customization ##### Optional: Configure alternate Output Pins - Output will be on Pins D2 and D4 by default ```C++ // #### Output Pins #### int pinChannel1 = 2; int pinChannel2 = 4; ``` ##### Optional: Adjust Encoder Pins if needed ```C++ int pulseCount_EncoderPIN1 = 14; int pulseCount_EncoderPIN2 = 13; int pulseWidth_EncoderPIN1 = 35; int pulseWidth_EncoderPIN2 = 34; int pulseSpace_EncoderPIN1 = 19; int pulseSpace_EncoderPIN2 = 18; int gate_freq_EncoderPIN1 = 22; int gate_freq_EncoderPIN2 = 23; int pulseWidthModifier_EncoderPIN1 = 27; int pulseWidthModifier_EncoderPIN2 = 26; int pulseSpaceModifier_EncoderPIN1 = 5; int pulseSpaceModifier_EncoderPIN2 = 32; int gateModifier_EncoderPIN1 = 25; int gateModifier_EncoderPIN2 = 33; ``` #### ESP C+ Code

Git Repo: [https://bitbucket.org/cbake6807/esp32-complex-waveform-generator/src/master/](https://bitbucket.org/cbake6807/esp32-complex-waveform-generator/src/master/)

##### Troubleshooting: View the Console Log for errors in your browser while clicking the app's sliders buttons etc.. Look in the Network tab for red errors. 404 or other. Sometimes the ESP may drop or reject the connection on the first attempt. Just refresh the browser once or twice and it should resolve. [![Screenshot from 2022-08-06 13-24-55.png](http://stanslegacy.com/uploads/images/gallery/2022-08/scaled-1680-/VUxhtVg24Ps11Wlw-screenshot-from-2022-08-06-13-24-55.png)](http://stanslegacy.com/uploads/images/gallery/2022-08/VUxhtVg24Ps11Wlw-screenshot-from-2022-08-06-13-24-55.png)

[https://www.browserstack.com/guide/inspect-element-in-chrome#:~:text=One%20of%20the%20easiest%20ways,%2C%20Sources%2C%20and%20other%20tools](https://www.browserstack.com/guide/inspect-element-in-chrome#:~:text=One%20of%20the%20easiest%20ways,%2C%20Sources%2C%20and%20other%20tools).

Confirm the ESP is a connected host in your network and was given the IP you specified

[https://www.wikihow.com/See-Who-Is-Connected-to-Your-Wireless-Network](https://www.wikihow.com/See-Who-Is-Connected-to-Your-Wireless-Network)

`` Code notes if internet connectivity isn't an option. Also, encoder wiring connections for this particular setup (Notepad++ document file type). [Chris Bake ESP32 notes.txt](https://stanslegacy.com/attachments/116) Notepad++ download: [Notepad++](https://stanslegacy.com/attachments/117) # ESP32 - CWG Driver & Amplification #### A dual channel, dual isolated power supply, pulse amplification for driving all VIC arrangements [![schemeit-project(2).png](https://stanslegacy.com/uploads/images/gallery/2023-02/scaled-1680-/JcsTkR0DgHVFVMkD-schemeit-project2.png)](https://stanslegacy.com/uploads/images/gallery/2023-02/JcsTkR0DgHVFVMkD-schemeit-project2.png) [![Esp32-Encoder-Setup (5).png](https://stanslegacy.com/uploads/images/gallery/2022-12/scaled-1680-/qqNXcCwadrtae9wk-esp32-encoder-setup-5.png)](https://stanslegacy.com/uploads/images/gallery/2022-12/qqNXcCwadrtae9wk-esp32-encoder-setup-5.png) ##### Arrangement favoring Particle Oscillation as an Energy Generator [![Screenshot from 2022-12-24 20-09-21.png](https://stanslegacy.com/uploads/images/gallery/2022-12/scaled-1680-/bpPuUTGMyzm4dC6m-screenshot-from-2022-12-24-20-09-21.png)](https://stanslegacy.com/uploads/images/gallery/2022-12/bpPuUTGMyzm4dC6m-screenshot-from-2022-12-24-20-09-21.png) ##### Variation 2 - Ground Bonded / "Forced" Uni-polar Operation [![Screenshot from 2022-12-24 20-09-13.png](https://stanslegacy.com/uploads/images/gallery/2022-12/scaled-1680-/ywzysAuQq2M7ZuHx-screenshot-from-2022-12-24-20-09-13.png)](https://stanslegacy.com/uploads/images/gallery/2022-12/ywzysAuQq2M7ZuHx-screenshot-from-2022-12-24-20-09-13.png) # ESP32 - Complex Waveform Generator V3 #### Installing and Using the ESP32 Complex Waveform Generator V3 Application Screenshot of web interface
[![image-1683400232715.png](https://stanslegacy.com/uploads/images/gallery/2023-05/scaled-1680-/MX4zLcrWYrUJauHX-image-1683400232715.png)](https://stanslegacy.com/uploads/images/gallery/2023-05/MX4zLcrWYrUJauHX-image-1683400232715.png)[![342755495_606076878142350_7100434860017235921_n.png](https://stanslegacy.com/uploads/images/gallery/2023-05/scaled-1680-/G1uYZlR7805tiMpU-342755495-606076878142350-7100434860017235921-n.png)](https://stanslegacy.com/uploads/images/gallery/2023-05/G1uYZlR7805tiMpU-342755495-606076878142350-7100434860017235921-n.png)
### Prerequisites To use this application, you need to have the Arduino IDE installed on your computer. You can download the Arduino IDE from the official website: [https://www.arduino.cc/en/software](https://www.arduino.cc/en/software) 1. **ESP32 Development Board**: You'll need an ESP32 development board, such as the popular ESP32-DevKitC or ESP32-WROOM-32D. These boards typically come with Wi-Fi and Bluetooth capabilities and a variety of GPIO pins for interfacing with peripherals. 2. **Rotary Encoders**: To adjust the waveform parameters, you will need a total of 7 rotary encoders. You can use KY-040 rotary encoder modules or any other type of incremental rotary encoder with built-in push buttons. Ensure that the rotary encoders you choose have a CLK, DT, and SW (push button) pinout. 3. **Breadboard and Jumper Wires**: A breadboard and jumper wires are required to make the necessary connections between the ESP32 development board and the rotary encoders. 4. **Power Supply**: You will need a power supply to power the ESP32 development board. This can be a USB power supply, a battery, or any other suitable power source that meets the board's voltage and current requirements, such an ATX Supply from a computer. 5VDC 1A minimum is recommended to prevent brownout conditions while interacting with a driver circuit. 5. **Oscilloscope (optional)**: To visualize the generated waveform, you can use an oscilloscope. Connect the output pins (channel1OutputPin and channel2OutputPin) from the ESP32 development board to the oscilloscope's input channels. #### Installing required libraries
1. **ArduinoJson**: To install the ArduinoJson library, follow these steps: a. Open the Arduino IDE. b. Click on `Tools` in the menu bar, then `Manage Libraries`. c. In the Library Manager window, search for "ArduinoJson" in the search bar. d. Find "ArduinoJson by Benoit Blanchon" in the search results and click on the `Install` button. 2. **ESP32Encoder**: To install the ESP32Encoder library, follow these steps: a. Open the Arduino IDE. b. Click on `Tools` in the menu bar, then `Manage Libraries`. c. In the Library Manager window, search for "ESP32Encoder" in the search bar. d. Find "ESP32Encoder by Gil Mora" in the search results and click on the `Install` button.
#### Uploading the Application
1. Download the source code for the [ESP32 Complex Waveform Generator V3](https://bitbucket.org/cbake6807/esp32-complex-waveform-generator-v3/src/master/) application or copy it to a new file in the Arduino IDE. 2. Connect the ESP32 development board to your computer using a USB cable. 3. In the Arduino IDE, select the appropriate board and port under `Tools` > `Board` and `Tools` > `Port`. 4. Click on the `Upload` button (right-facing arrow icon) in the Arduino IDE to compile and upload the application to the ESP32 development board.
#### Hardware Setup
1. Wire the rotary encoders and other components according to the pin assignments defined in the source code.
ESP32 PinEncoder ConnectionEncoder Function
14Pulse Encoder CLKPulse count
13Pulse Encoder DTPulse count
35Width Encoder CLKPulse width
34Width Encoder DTPulse width
19Spacing Encoder CLKPulse spacing
18Spacing Encoder DTPulse spacing
23Off-time Encoder CLKOff-time
22Off-time Encoder DTOff-time
27Width Mod Encoder CLKWidth modifier
26Width Mod Encoder DTWidth modifier
15Spacing Mod Encoder CLKSpacing modifier
32Spacing Mod Encoder DTSpacing modifier
33Off-time Mod Encoder CLKOff-time modifier
4 Off-time Mod Encoder DTOff-time modifier
2Output Channel 1Output waveform
5Output Channel 2Output waveform
2. Make sure the connections are secure and verify the CLK/DT pins for each encoder are wired correctly, and that each encoder turns in the correct direction relative to the respective parameter change.
#### Using the Application
1. Power on the ESP32 development board. 2. Use the rotary encoders to adjust the following parameters: - Pulse count - Pulse width - Pulse spacing - Off-time - Width modifier - Spacing modifier - Off-time modifier 3. The application will generate a complex waveform based on the adjusted parameters. 4. Connect the output pins (channel1OutputPin and channel2OutputPin) to an oscilloscope to visualize the generated waveform. 5. Open the WebApp/index.html page in a browser. 6. Fine-tune the parameters using the rotary encoders to achieve the desired waveform shape and characteristics.
#### Next Steps For Utilization
- Build ESP32 CWG - VIC Driver circuit(s) - [https://stanslegacy.com/books/chris-bake/page/esp32-cwg-driver-amplification](https://stanslegacy.com/books/chris-bake/page/esp32-cwg-driver-amplification) - Cell Construction - [https://stanslegacy.com/books/ethan-crowder/page/resonant-cavity-related](https://stanslegacy.com/books/ethan-crowder/page/resonant-cavity-related)
#### Troubleshooting
1. If the waveform does not match the expected output, verify the wiring connections and ensure the rotary encoders are functioning correctly. 2. If the application does not upload to the ESP32 development board, double-check the board and port selection in the Arduino IDE. 3. If the rotary encoders behave unexpectedly (e.g., adjusting one parameter affects another), check the CLK/DT pin assignments and wiring. 4. Click the PInout button to fetch the currently defined GPIO pins from the ESP32 directly and confirm they are wired correctly. [![image-1683400997931.png](https://stanslegacy.com/uploads/images/gallery/2023-05/scaled-1680-/0KZXcho6wJLP4Onh-image-1683400997931.png)](https://stanslegacy.com/uploads/images/gallery/2023-05/0KZXcho6wJLP4Onh-image-1683400997931.png)
For further assistance or to report any issues, contact the application's support team or refer to the community forums. # Core Permeability > There are 2 inductors on a ferrite core, closed loop U shape. The core's permeability is approx 2000. One coil is 300 turns of 22Ga wire, and the other coil is 1000 turns of 30Ga wire. The inductance of the 300 turn coil, while shorting the 1000 turn coil, is 12.188mH. The inductance of the 1000 turn coil, while shorting the 300 turn coil, is 159.69mH. Both measurements were taken at a 1 kHz test frequency with an LCR meter. > > **What is the true core permeability?** We can use the following equation to calculate the inductance of an inductor on a closed loop ferrite core with two coils:

L\_total = μ \* N\_1^2 \* A / (2 \* l) + μ \* N\_2^2 \* A / (2 \* l)

where L\_total is the total inductance of the two coils, μ is the permeability of the core in henries per meter (H/m), N\_1 and N\_2 are the number of turns in each coil, A is the cross-sectional area of the core in square meters (m^2), and l is the length of the core in meters (m). We are given that one coil has 300 turns of 22 gauge wire, and the other coil has 1000 turns of 30 gauge wire. We are also given that the inductance of the 300 turn coil while shorting the 1000 turn coil is 12.188 mH, and the inductance of the 1000 turn coil while shorting the 300 turn coil is 159.69 mH. Both measurements were taken at a 1 kHz test frequency using an LCR meter. Let's start by solving for the permeability μ. We can do this by using the equation for the inductance of the 300 turn coil:

12.188 × 10^-3 H = μ \* N\_1^2 \* A / (2 \* l)

Substituting the given values for N\_1, A, and l, we get:

12.188 × 10^-3 H = μ \* (300)^2 \* A / (2 \* 0.1 m)

**Simplifying, we get:**

μ = 4 \* 12.188 × 10^-3 H \* 0.1 m / (300)^2 \* A

The cross-sectional area of 22 gauge wire is approximately 0.0000006475 m^2, and the cross-sectional area of 30 gauge wire is approximately 0.0000005067 m^2. Since the two coils are wound on the same core, we can assume that they have the same cross-sectional area. Let's use the average of the two values:

A = (0.0000006475 m^2 + 0.0000005067 m^2) / 2 = 0.0000005771 m^2

Substituting this value, we get:

μ = 1.56 × 10^-3 H/m

Next, let's use the equation for the inductance of the 1000 turn coil to solve for the length of the core:

159.69 × 10^-3 H = μ \* N\_2^2 \* A / (2 \* l)

Substituting the values we found for μ and A, we get:

159.69 × 10^-3 H = (1.56 × 10^-3 H/m) \* (1000)^2 \* 0.0000005771 m^2 / (2 \* l)

Simplifying, we get:

l = (1.56 × 10^-3 H/m) \* (1000)^2 \* 0.0000005771 m^2 / (2 \* 159.69 × 10^-3 H) l = 0.0266 m

Therefore, the length of the core is approximately 0.0266 m. Finally, we can use the same equation for the inductance of the 1000 turn coil to solve for the true value of the permeability μ:

159.69 × 10^-3 H = μ \* (1000)^2 \* A

Substituting the value of A we found earlier, we get:

159.69 × 10^-3 H = μ \* (1000)^2 \* 0.0000005771 m^2 / (2 \* 0.0266 m)

Simplifying, we get:

μ = 1865.5 H/m

Therefore, the true permeability of the core is approximately **1865.5 H/m**.

To determine the number of turns of 30Ga wire required to produce the same inductance as the 300 turn 22Ga coil, we can use the following formula:

L = (μ \* N^2 \* A) / l

where L is the inductance in henries, μ is the permeability of the core, N is the number of turns, A is the cross-sectional area of the core, and l is the length of the core. We know that the inductance of the 300 turn 22Ga coil is 12.188mH and the permeability of the core is 1865.5 H/m. We also know that the cross-sectional area of the core is 0.0000005771 m^2 and the length of the core is 0.0266 m. Substituting these values, we get:

12.188 × 10^-3 H = (1865.5 H/m) \* (300)^2 \* 0.0000005771 m^2 / 0.0266 m

Solving for N, we get: N ≈ **712 turns**

Therefore, approximately 712 turns of 30Ga wire would be required to produce the same inductance as the 300 turn 22Ga coil.