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Hi, Stephan. Did you set up a tuner exactly close to antenna or trough unknown length cable ? Russ, Marek Thanks for the links. I will try to do that. FT240 and FT140 inside looks like an invention.

Hi all, Built one of these and I am very happy with the results. Started building and0ther, to modify to work on low power, but think I may have fried the main IC. Anyone here able to get, program

Also, I had troubles connecting the wiring between PICKIT and ATU not quite 100% correct that was causing it to not appear, but it appeared once I corrected that issue.

Hi, Chris You have found a mistake Try this FW

Thanks Dave that does seem to explain why I'm seeing an SWR of 0.00 and could also be the cause of why its not tuning @ <1W. 73 Chris

Hi Kestutis, I append a PDF with explanation of cell-contents, so you see, what you need.... Good luck and 73 Immo, DL5KB

Hi Chris, I had a quick look at the code. Although the configuration in cell 4 is in tenths of a Watt, in the main.c file void get_pwr() there appears to be a branch that is hard coded for PWR<10

Hi, One additional point. Some ATU100's are shipped with the PIC protected. This means that it will not be possible to write to the EEPROM. The reference firmware can be programmed into the PIC and

Hi, It sounds like there may be a short on the VDD line, if the PICkit 3 is rebooting when you turn on the VDD option. Perhaps try turning on the option whilst it is not connected to the ATU and see

Hi, The user manual can be found in the following link. https://github.com/Dfinitski/N7DDC-ATU-100-mini-and-extended-boards/tree/master/ATU_100_EXT_board There is minor changes for 3.1 and 3.2 and

then trying to turn the "VDD Pickit 3 ON" on Windows getting a connection and disconnection sound the status led on pickit flashes and??"VDD Pickit 3 ON" goes unticked again. What issue can be

Hi all, is anybody could point to the exact hex value change datasheet? Where I can see which value does what. Thank you.

I've tried editing cell 4 of the firmware to "03" but I just get a SWR reading of 0.00 and the transmitted power displayed? "4.? min power to start tuning in ten's parts of Watt, 10 by default (1.0

Hi, If the PIC is connected is should automatically be detected by the PICkit 3 software. A few points to check. - Is the ATU powered when running the software? If not, you can power the PIC from the

Hi all, Bought new pickit v3 and trying to modify for qrp operation. The pickit wired to atu-100pro cheked the wiring and look ok. Then pickit connected it's detected by software but then trying to

Another alternative is to move up to the ESP32 with? 3 hardware UART's. The Arduino Pro Mini I am using now just has the single hardware UART receiving binary packets from the ATU100 and doing the

Thanks Bj?rn, I'll have a look.

You can play around in the code ported for the free MPLAB. W1RCT has ported the original code for ATU-100. You find it here: https://github.com/WA1RCT/N7DDC-ATU-100-mini-and-extended-boards

http://www.rowlandtechnology.com/projects/2015/09/25/spi-to-4-x-uart-bridge-multiuart-project/

Hi Ian, Great looking dashboard. The D1 Mini (ESP8266) module is a good low-cost solution for lots of applications. There are variations in quality and power supply arrangement, some have a diode on