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Re: Mike Black W9MDB SK

 

Hello Rick,
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There are two versions of the Nano's boot loader: one for original miniUSB-connected devices and the other for USB-C devices. This is a generalization, so there can be exceptions.
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The secret is to change the processor in the tools menu:
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If one does not work, try the other.? All of the USB-C Nanos use the ATmega328 processor.
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The other potential issue is the size of the bootloader file.? If the KD8CEC program will not fit, some options are selected in the ubitx.h file:
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//==============================================================================
// User Select feather list
//==============================================================================
/*
//Enable all features
#define FN_BAND ? ? ? ? 1 //592
#define FN_VFO_TOGGLE ? 1 //78
#define FN_MODE ? ? ? ? 1 //20
#define FN_RIT ? ? ? ? ?1 //58
#define FN_SPLIT ? ? ? ?1 //62
#define FN_IFSHIFT ? ? ?1 //238
#define FN_ATT ? ? ? ? ?1 //128
#define FN_CW_SPEED ? ? 1 //152
#define FN_VFOTOMEM ? ? 1 //254
#define FN_MEMTOVFO ? ? 1 //188
#define FN_MEMORYKEYER ?1 //156
#define FN_WSPR ? ? ? ? 1 //1044
#define FN_SDRMODE ? ? ?1 //68
#define FN_CALIBRATION ?1 //666
#define FN_CARRIER ? ? ?1 //382
#define FN_CWCARRIER ? ?1 //346
#define FN_CWTONE ? ? ? 1 //148
#define FN_CWDELAY ? ? ?1 //98
#define FN_TXCWDELAY ? ?1 //94
#define FN_KEYTYPE ? ? ?1 //168
#define FN_ADCMONITOR ? 1 //516
#define FN_TXONOFF ? ? ?1 //58
*/
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Not selecting the FN_WSPR frees up the most memory. The display plays a role as well. There are two suggested feature lists:
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/*
//Recommended Character LCD Developer ?87%
#define FN_BAND ? ? ? ? 1 //592
#define FN_VFO_TOGGLE ? 1 //78
#define FN_MODE ? ? ? ? 1 //20
#define FN_RIT ? ? ? ? ?1 //58
#define FN_SPLIT ? ? ? ?1 //62
#define FN_IFSHIFT ? ? ?1 //238
#define FN_ATT ? ? ? ? ?0 //128
#define FN_CW_SPEED ? ? 0 //152 //using MM
#define FN_VFOTOMEM ? ? 1 //254
#define FN_MEMTOVFO ? ? 1 //188
#define FN_MEMORYKEYER ?1 //156
#define FN_WSPR ? ? ? ? 1 //1044
#define FN_SDRMODE ? ? ?1 //68
#define FN_CALIBRATION ?0 //667 //using MM
#define FN_CARRIER ? ? ?0 //382 //using MM
#define FN_CWCARRIER ? ?0 //346 //using MM
#define FN_CWTONE ? ? ? 0 //148 //using MM
#define FN_CWDELAY ? ? ?0 //98 //using MM
#define FN_TXCWDELAY ? ?0 //94 //using MM
#define FN_KEYTYPE ? ? ?0 //168 //using MM
#define FN_ADCMONITOR ? 0 //516 //using MM
#define FN_TXONOFF ? ? ?1 //58
*/


//Recommended for Nextion, TJC LCD 88%
#define FN_BAND ? ? ? ? 1 //600
#define FN_VFO_TOGGLE ? 1 //90
#define FN_MODE ? ? ? ? 1 //318
#define FN_RIT ? ? ? ? ?1 //62
#define FN_SPLIT ? ? ? ?1 //2
#define FN_IFSHIFT ? ? ?1 //358
#define FN_ATT ? ? ? ? ?1 //250
#define FN_CW_SPEED ? ? 0 //286
#define FN_VFOTOMEM ? ? 0 //276
#define FN_MEMTOVFO ? ? 0 //234
#define FN_MEMORYKEYER ?1 //168
#define FN_WSPR ? ? ? ? 1 //1130
#define FN_SDRMODE ? ? ?1 //70
#define FN_CALIBRATION ?0 //790
#define FN_CARRIER ? ? ?0 //500
#define FN_CWCARRIER ? ?0 //464
#define FN_CWTONE ? ? ? 0 //158
#define FN_CWDELAY ? ? ?0 //108
#define FN_TXCWDELAY ? ?0 //106
#define FN_KEYTYPE ? ? ?0 //294
#define FN_ADCMONITOR ? 0 //526 //not available with Nextion or Serial UI
#define FN_TXONOFF ? ? ?1 //70

//==============================================================================
// End of User Select Mode and Compil options
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Setting define to 0 removes that feature from the program.
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I hope the above helps.
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73
Evan
AC9TU
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