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Hi Scott & Beau, thank you very much for your reply! I'll review your hints and report about results when done (which will take some time due to familiar duties with higher priority ...). I used

Wolf, I agree with Scott that the problem is likely in the circuitry measuring the SWR.? I had a similar problem the a pre-built ATU-100 I ordered.? For me, it turned out it was a bad solder joint

Hi, Paul To use 100 W full power you have to wind 1:10 transformer. The ADC has a limit, it is impossible to meassure more than some maximum value. But anyway, the tuner should to show "Overload" 5

I am experiencing an overload when using SSB on 40 meters.? Initially I used the ATU in CW mode without problem.? Last night I switched to LSB on 40m, and the 40-line display got corrupted or the

I had a very similar problem. My first ATU-10 would complete the tuning cycle but would not achieve an SWR anywhere near 1:1 (it tuned to 5:1 into 50 ohms). I managed to get the seller I bought mine

really enjoy my atu-10, and it has been great operating /p with my qrp rigs... here's my question: what is the realistic max rf output through the tuner? 30W SSB? 15W SSB? or is the listed 10W the max

Hi everyone, I’m new to this forum. A couple of month ago I‘ve purchased an ATU-10 via Aliexpress which doesn‘t work properly. The seller (Hisonauto) doens’t care about. So I’m looking for

PERFECT!!! Your message came just in time, I was just about to rewrite the 1602 routines! Thanks! Vince. -- Michigan VHF Corporation -- nobucks dot net K8ZW - http://www.hamradio.fun

In the vsn 3.2 firmware in the file oled_control.c and in the routine led_wr_str there is a line: led_send(8 + col*4); replace that line with the following: if (col==0) i=0x08; if (col==1) i=0x0C; if

I have a 20x4 display that I want to put some extra stuff in the last two lines. I've been fighting with this thing most of the evening and can't get anything on lines 3 and 4. What am I missing?

That is a good idea.? RA6 and 7 not in use in my setup.? Using interrupts would be tricky as the I2C handling is done by bit banging and interrupts would interfere with the timing. Thanks

Another way to do it is to take either RA6 or RA7 (not sure what they're supposed to do) and use one for notifications. Configure both (one on the pic, one on the pi) to be inputs. Poll them during

It helped me. I had already figured the bits were shifted and bit 1 was now a zero but didn't know why. Now I do! Thanks!! Vince - K8ZW. -- Michigan VHF Corporation -- nobucks dot net K8ZW -

The address "issue" is actually quite simple.? I2C addresses are comprised of 7 bits and in use are followed by a read/write bit which is 0 for write and 1 for read.? As the firmware only writes and

My idea is to have the ATU send the PI an I2C message saying "got anything for me" and then listen for a reply for a short while.? This would be done from the "waiting for button press loop" in the

How about this: have the Pi send a break (a long pulse on the serial line) to get the ATU's attention.? Then the ATU can send a "go ahead" to the Pi and start listening for serial data.? That way,

Hello! As I said earlier (or elswhere) - I work with *microC for PIC* , so this is my GitHub repository ( https://github.com/Paguo-76M2/N7DDC-ATU-10-QRP-w-AD8361 ) Just made initial changes to David's

I haven't used I2C, but in my fork of the code (WA1RCT), which should build either under MikroC or the MPELAB toolchain, I've used 1 of the PIC output pins to bit-bang data out serially, as a uart, to

Hello Tony, Sounds great and awaiting your results. 73 Kees K5BCQ

Dear Kees, Yes, I expect the 40 dBm maximum input level, and to fit it into AD8361's 0,4 Vrms allowed signal I plan to wind 10 turns, then I've arranged a Pi matching attenuator (56,2 Ohm shunt in,