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I've been incrementally putting the right header files into the build directory and installing the libraries into the Arduino IDE to alleviate the compiler issues, but now I've hit a wall...Here is my output (the first few lines of the error message - and it's pretty lengthy: C:\Users\Marty Wittrock\Desktop\TinySA\tinySA-master\tinySA\tinySA.ino: In function 'void SI4432_Reset()': tinySA:30:17: error: 'SerialUSB' was not declared in this scope #define Serial SerialUSB .... So I tried a suggestion on an Arduino forum to change the define from what's in Erik's .ino file to: #define SerialPort Serial ....and that seemed to work, but now I have these ugly issues and I don't know how to fix these (again, just the first few lines - there are several compile errors): Arduino: 1.8.10 (Windows 10), Board: "Arduino Nano, ATmega328P" C:\Users\MARTYW~1\AppData\Local\Temp\ccbMaiQ3.ltrans0.ltrans.o: In function `global constructors keyed to 65535_0_tinySA.ino.cpp.o.3077': <artificial>:(.text.startup+0x62): undefined reference to `Adafruit_ILI9341::Adafruit_ILI9341(signed char, signed char, signed char)' C:\Users\MARTYW~1\AppData\Local\Temp\ccbMaiQ3.ltrans0.ltrans.o: In function `setup': C:\Users\Marty Wittrock\Desktop\TinySA\tinySA-master\tinySA/tinySA.ino:1591: undefined reference to `config' C:\Users\Marty Wittrock\Desktop\TinySA\tinySA-master\tinySA/tinySA.ino:1591: undefined reference to `config' C:\Users\Marty Wittrock\Desktop\TinySA\tinySA-master\tinySA/tinySA.ino:1592: undefined reference to `config' C:\Users\Marty Wittrock\Desktop\TinySA\tinySA-master\tinySA/tinySA.ino:1592: undefined reference to `config' C:\Users\Marty Wittrock\Desktop\TinySA\tinySA-master\tinySA/tinySA.ino:1593: undefined reference to `config' C:\Users\MARTYW~1\AppData\Local\Temp\ccbMaiQ3.ltrans0.ltrans.o:C:\Users\Marty Wittrock\Desktop\TinySA\tinySA-master\tinySA/tinySA.ino:1593: more undefined references to `config' follow C:\Users\MARTYW~1\AppData\Local\Temp\ccbMaiQ3.ltrans0.ltrans.o: In function `setup': C:\Users\Marty Wittrock\Desktop\TinySA\tinySA-master\tinySA/tinySA.ino:1621: undefined reference to `Adafruit_ILI9341::begin(unsigned long)' C:\Users\Marty Wittrock\Desktop\TinySA\tinySA-master\tinySA/tinySA.ino:1622: undefined reference to `Adafruit_ILI9341::setRotation(unsigned char)' C:\Users\MARTYW~1\AppData\Local\Temp\ccbMaiQ3.ltrans0.ltrans.o: In function `begin': C:\Users\Marty Wittrock\Documents\Arduino\libraries\XPT2046_Touchscreen/XPT2046_Touchscreen.cpp:36: undefined reference to `ts' C:\Users\Marty Wittrock\Documents\Arduino\libraries\XPT2046_Touchscreen/XPT2046_Touchscreen.cpp:37: undefined reference to `ts' C:\Users\Marty Wittrock\Documents\Arduino\libraries\XPT2046_Touchscreen/XPT2046_Touchscreen.cpp:38: undefined reference to `ts' C:\Users\Marty Wittrock\Documents\Arduino\libraries\XPT2046_Touchscreen/XPT2046_Touchscreen.cpp:40: undefined reference to `ts' C:\Users\Marty Wittrock\Documents\Arduino\libraries\XPT2046_Touchscreen/XPT2046_Touchscreen.cpp:41: undefined reference to `ts' C:\Users\MARTYW~1\AppData\Local\Temp\ccbMaiQ3.ltrans0.ltrans.o:C:\Users\Marty Wittrock\Documents\Arduino\libraries\XPT2046_Touchscreen/XPT2046_Touchscreen.cpp:41: more undefined references to `ts' follow C:\Users\MARTYW~1\AppData\Local\Temp\ccbMaiQ3.ltrans0.ltrans.o: In function `loop': C:\Users\Marty Wittrock\Desktop\TinySA\tinySA-master\tinySA/tinySA.ino:1738: undefined reference to `ui_process_touch()' C:\Users\Marty Wittrock\Desktop\TinySA\tinySA-master\tinySA/tinySA.ino:1739: undefined reference to `ui_mode' collect2.exe: error: ld returned 1 exit status So what can I do to remedy these errors or do I need to add libraries that I'm not aware of? And maybe the more simple request would be: 'Is there documentation on what the build environment for this project is?' Please let me know - I'm stuck in 'compiler Hell' right now... 73 de Marty, KN0CK

Hi, I have finally received all major parts to try my hand at building this SA following Glenn's writeup. On his site he mentions that the layest firmware for the ESP32 wrover is 2.7 but what is in the files section here is only 2.3. Does anyone know where I can get a copy of the layest firmware please? 73, Elia M0ZHN

During the last weeks I have been a bit quiet here as most of my time when into designing, together with Hugen, of a self contained, ready build, hand-held version of the tinySA to be sold for a very acceptable price. The outline and display are exactly the same as the nanoVNA and the tinySA will come with a housing. As the HW performance now seems to be OK and the SW is more or less complete i could use the help of some (not many) testers. Preferably people that already own (or have access to) a spectrum analyzer and are active building something that requires a spectrum analyzer in the 0.1MHz till 350MHz range. This tinySA can also capture 240MHz till 960MHz (with somewhat reduced performance and functionality) and it can also be used as a signal generator (0-350MHz and 240MHz till 9060MHz) If you think you could contribute to the testing feel free to send me a PM with some info on the project you'd like the tinySA for. There will only be a limited number of tester products. Selected testers will receive a tinySA and are kindly requested to use it and feedback their experience. I create a dedicated tinysa group for this purpose. /g/tinysa/topics More information on this version of the tinySA can be found in this wiki https://tinysa.org/wiki/ Please be patient as the wiki is running a bit behind. -- HBTE Files section: /g/HBTE/files Erik, PD0EK

I wrote a little library to handle the PE4302 attenuator modules and I 'm working on one for the Si4432 modules, but that's a bit trickier as I don't have one yet! A also don't have a serial interface version of the PE4302 module, so if someone out there has one of those, I'd appreciate a quick test to see if the library works with those. I've tested it with the parallel version of the module and with the parallel version interfaced through a PCF8574 GPIO expander chip (as implemented on Glenn's PCB) and those work fine. The attached ZIP file has the library and a simple test program to handle all three modes. The comments explain how to configure it for each mode (it's simple). So again, if someone can test the serial mode and report back, it would be much appreciated! EDIT: I should have mentioned to test it, you'll have to verify that the module is set to the proper attenuation, which you can do with something as simple as a NanoVNA. Just seeing if it returns the correct value on the serial monitor just says the library is storing the number correctly which I do know works. Thanks! -- John P. WA2FZW

This project is a GPS locked combination frequency counter/frequency standard. It's designed to work with the QRP Labs QLG1 GPS Kit ( https://www.qrp-labs.com/qlg1.html ). It runs on an Arduino Nano and uses a 4x20 LCD display. An Si5351 module is used as the frequency standard. All the files and documentation are on GitHub ( https://github.com/WA2FZW/A-GPS-Locked-Frequency-Counter-Frequency-Standard-by-WA2FZW ). Included is the software for the "GPS_Counter" program, a document that describes how to build and operate it and the Gerber files for the printed circuit board. A second program, "Where_MI" can be run on the same hardware and provides traditional GPS functionality. If anyone is interested, I have about a dozen of the PCBs that I am willing to part with for $5 each with free domestic shipping and about a dozen earlier PCBs that do not have the preamplifier stage; these work fine for 3V3 or TTL signals. You can have those for $3 each with free domestic shipping. Email me (good on QRZ.com) if you want a PCB. Enjoy! -- John P. WA2FZW

Sometimes you need a swept sine generator and you don't have one available. How about building one? Sounds complex but it is actually fairly simple. If you search ebay for "12V RF controlled oscillator" there are many suppliers for a version that sweeps from about 500MHz to 1000Mhz for a price of 15$ per piece. You need two of these modules, one 10dB attenuator and one mixer such as an ADE-1, either on a ready module for 10$ or as bare mixer for substantially less. Connect one VCO with tuning input connected to ground to the mixer LO input and one VCO with the tuning input used for frequency control with the 10dB attenuator to the RF input of the mixer. Finally you add a 4 fold op-amp, two variable resistors (one for center frequency and one for span) and some more small components to generate the frequency control voltage and you have a wide range swept sinus generator. The IF output of the mixer will deliver from 0 till 500MHz at about -10dBm and 2nd, 3rd and 4th harmonic are at least 40dB below the fundamental. If you can not go down to zero Hz you have to interchange the VCO modules as the module with the lowest output frequency with tuning input connected to ground should be used as the variable VCO. Have fun! -------------------------------------------------------------------- HBTE Files section: /g/HBTE/files Erik, PD0EK