KD8CEC Amateur Radio

Backup uBITX configuration using QR Code
If you are using the CEC firmware and Nextion LCD, you can back up the configuration file in a simple way. If you have an internet-enabled mobile phone, you can back up various configuration files.

uBITX Firmware CEC Version 1.1 Release
Version 1.1 is the first major release since 1.097, I will release it after a 50-day beta test.


Version 1.1 includes all additions or improvements from 1.08 to 1.09, 1.093, 1.095, 1.097 

How to use uBITX CEC Firmware Source
CEC Firmware is based on unmodified uBITX.
Starting with the 1.7x version, we started to support various LCDs, and 1.9 supports Nextion LCD.
Signal Meter was supported in version 1.8, Starting with Version 1.9, I2C Type Signal Meter Sensor (Standalone Signal Analyzer) is supported.

These compile options are described in 'ubitx.h'.  This post explains how to configure ubitx.h.

uBITX Firmware CEC Version 1.097Beta  Release (Include  Nextion LCD, TJC LCD GUI Firmware V3, uBITX Manager V1.097,
Standalone Signal Analyzer1 V0.7)

Changed Standalone Signal Analyzer1 V0.5 => Standalone Signal Analyzer1 V0.7
uBITX firmware CEC Version is based on uBITX which has not modified anything. Prior to deployment, the 16x02 LCD with built-in is tested first. Nextion LCD, TJC LCD, 20x04 LCD and I2C LCD are not essential for using uBITX Firmware CEC version. In order to view signals with Character LCD or Nextion LCD, Signal Meter Sensor must be installed. Of course, CEC Firmware operates normally even if S-meter sensor is not installed.

Standalone Signal Analyzer (I2C Type Signal-Meter) for uBITX #3 - Advanced and FFT
This is the last section of the Standalone Signal Analyzer. Describes applications on uBITX and Nextion LCD.
1.Create and use with Character LCD 2.For Nextion LCD 3.Nextion LCD Advanced

Standalone Signal Analyzer (I2C Type Signal-Meter) for uBITX #2 - Nextion LCD
Used in the same way as Character LCD, Additional features are provided when used with Nextion LCD

1.Create and use with Character LCD 2.For Nextion LCD 3.Nextion LCD Advanced

Standalone Signal Analyzer (I2C Type Signal-Meter) for uBITX Create and use with Character LCD
This idea was discussed in the uBITX group (https://groups.io/g/BITX20/topics).
I used a separate Arduino to expand the limited I/O. The material needed is Arduino Nano, two resistors and one capacitor, Estimated cost is less than $3.
Now, since it is the initial version, only the received signal is measured, but if it is applied a little, output power and SWR can be measured together.

Setting CW options in uBITX with Nextion LCD (Version 1.097)
This document is intended to explain before you deploy 'CEC Firmware Version 1.097'
CEC Firmware Version 1.097 will be released within one week.

1.CW Options settings in Nextion LCD
Added the ability to set CW Options at GUI by user's request.
Of course, CW options can be set in the same way as Character LCD. We call it Text mode.  However, we added the CW option setting function in Version 1.097 so that it is more convenient in the GUI and can be quickly changed during CW operation.

CW frequency in ubitx
This article is about CW frequencies on uBITX radios. Maybe you already know.
If you already know, please refer to chapter 5 below only, This article is for beginners like me. 

1.The CW frequency display method in uBITX has been discussed for a long time.
Search for 'ubitx cw frequency' or 'bitx cw frequency' in Google.

In particular, mike, the operator of uBITX.net, has clarified the CW Frequency.
https://ubitx.net/2018/07/02/kd8cec-firmware-hint-cw-frequency-display/

How to use memory channel in uBITX with Nextion, TJC LCD
CEC Firmware supports a variety of LCD Types (The 16x02 LCD included with uBITX, 20x04 LCD, I2C type LCDS, and Nextion or TJC LCD)
The memory channel in uBITX started to be supported by CEC Firmware Version 1.0
The basic usage is the same in the latest version

uBITX Firmware CEC Version 1.095Beta  Release (Include  Nextion LCD and TJC LCD GUI Firmware V2)
uBITX firmware CEC Version is based on uBITX which has not modified anything. Prior to deployment, the 16x02 LCD with built-in is tested first. Nextion LCD, TJC LCD, 20x04 LCD and I2C LCD are not essential for using uBITX Firmware CEC version.
In order to view signals from Character LCD or Nextion LCD, Signal Meter Sensor must be installed. Of course, CEC Firmware operates normally even if S-meter sensor is not installed.

Capacitor Selection and Application of S-Meter in uBITX with Nextion LCD
This document is intended to illustrate some of the features added in CEC Firmware Version 1.095, Version 1.095 has been released. (http://www.hamskey.com/2018/07/ubitx-firmware-cec-version-1095beta.html)
Several features have been added in Version 1.095, Most of the improvements will be covered in the deployment article.

How to use Multi Nextion LCD (TJC LCD) with uBITX
This document is intended to illustrate some of the features added in CEC Firmware Version 1.095,  Version 1.095 has been released. (http://www.hamskey.com/2018/07/ubitx-firmware-cec-version-1095beta.html) Several features have been added in Version 1.095, Most of the improvements will be covered in the deployment article.

Nextion, TJC, Character LCD current consumption
When using Nextion LCD, the first question I get is 'What is the current consumption?' I do not know. I did not even know the name of Nextion LCD until recently.
CEC Firmware Users continued to talk about Nextion LCD, so I got to know Nextion LCD. I even confused TJC LCD and Nextion LCD.
Instruments used in this document are not guaranteed to be accurate.

Creating a simple S-Meter Sensor for uBITX (LM358 Version)
If you are already using S-Meter, you do not need to view this document. This document is for those who do not have an S-Meter Sensor or want to use some of the features using S-Meter on the Nextion LCD. There are various ways to attach S.Meter to uBITX. You can find things on the Internet that are far superior to what I have created.

uBITX Firmware CEC version is based on unmodified uBITX. However, to see the strength of the received signal, you have to attach the sensor. Of course, there is no problem in using CEC firmware without a signal meter sensor. Most people I know have not installed an S-meter yet.

uBITX Firmware CEC Version 1.094Beta  Release (Include  Nextion LCD and TJC LCD GUI Firmware)
uBITX firmware CEC Version is based on uBITX which has not modified anything. Prior to deployment, the 16x02 LCD with built-in is tested first. Nextion LCD, TJC LCD, 20x04 LCD and I2C LCD are not essential for using uBITX Firmware CEC version.
This version is not significantly different from version 1.08. Nextion LCD and TJC LCD is added to 1.09x version

uBITX with Nextion LCD (CEC Firmware) - Installation and Introduction uBITX CEC Firmware supports various LCD since Version 1.08 (16x02 Parallel, 20x04 Parallel, 16x02  I2C, 20x04 I2C, 16x02 Dual LCD with I2C).
Supports Nextion LCD (Graphic LCD) from Version 1.09, Version 1.09x is primarily aimed at Nextion LCD support. Also 1.09x will continue to be Beta version. If you want a stable version, please use 1.08 or 1.1 version to be released in the future.

How to use Nextion LCD #3 - Practice for use with a transceiver
I do not know much about Nextion LCD. During the production of uBITX Firmware which is HF Transceiver, I was introduced by several OMs, The ultimate goal of this article is to create a GUI for the HF Transceiver.

uBITX CEC Version officially supports Nextion LCD from version 1.09.
I will support 2.4 "and 2.8" LCD by default. You do not need to understand everything below to connect uBITX Nextion LCD. Just use the Nextion Editor to load the firmware on the Nextion LCD. If you want to create your own GUI, please read these articles.


How to use Nextion LCD Series #1 Start Nextion LCD #2 Programming and application
#3 - Practice for use with a transceiver #4 Applied to HF Transceiver #5 Advanced Application (Applied to various sizes)

How to use Nextion LCD #2 - Programming and application
How to use Nextion LCD Series #1 Start Nextion LCD #2 Programming and application
#3 - Practice for use with a transceiver #4 Applied to HF Transceiver #5 Advanced Application (Applied to various sizes)

How to use Nextion LCD #1 - Start Nextion LCD
I do not know much about Nextion LCD. During the production of uBITX Firmware which is HF Transceiver, I was introduced by several OMs, The ultimate goal of this article is to create a GUI for the HF Transceiver.

uBITX CEC Version officially supports Nextion LCD from version 1.09.
I will support 2.4 "and 2.8" LCD by default. You do not need to understand everything below to connect uBITX Nextion LCD. Just use the Nextion Editor to load the firmware on the Nextion LCD. If you want to create your own GUI, please read these articles.

How to use Nextion LCD Series #1 Start Nextion LCD #2 Programming and application #3 - Practice for use with a transceiver #4 Applied to HF Transceiver #5 Advanced Application (Applied to various sizes)
1.Nextion LCD?
 - It is a TFT LCD with built-in Font, Control etc. required for GUI
  This is why you can use the graphical GUI on small size MCUs like Arduino.
 https://www.itead.cc/wiki/Nextion_HMI_Solution



 -…

Old Photo#2 - Cortex M0 Hand Packaging

I found a old photo on Google Photos.

The designed Cortex M0 was delivered to the factory, One of the master students commuted to the factory and finished all the debugging and waited until it was produced.
The Master had planned to complete the paper by measuring the performance in the produced Cortex M0.

Frequency adjustment of uBITX (Si5351)
How to calibration for Frequency fine adjusting
This document describes how to precisely adjust the frequency of the Si5351 module
Applies to all devices that use the Si5351 module, such as uBITX
I used a very old instrument to show the difference in frequency for verification of this post.

uBITX Firmware CEC Version 1.08 Release
Version 1.08 is the first major release since 1.061, I will release it after a 50-day beta test