Re: pickit v3 not connecting
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 programmer by selecting the option.
- Check that the MCLR connection is made from the programmer to the PIC.
There are several posts on the forum that may help if you do a search for PICkit.
You should be able to manually select the PIC16F device under the ¡°Midrange¡± option, but this should not be necessary.
73, Dave
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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 read pic showing: No device detected. In the software menu the pic16 not in the list maybe this is issue?? 
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Re: Serial control/monitoring of meters?
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 RS485 with software serial, it would probably be better the other way around but this works fine and was easier to debug that way
73 Ian.
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Thanks Bj?rn, I'll have a look.
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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
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Re: Serial control/monitoring of meters?
On 04/04/2023 10:03, Dave (G8PTN)
wrote:
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The ESP8266 is
limited on the serial port capability, so I tend to use them in
conjunction with I2C and SPI peripherals. I did find a SPI to
4xUART bridge module which works well if you need to control
multiple UART devices.
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Re: Serial control/monitoring of meters?
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 the 5V USB input and other don¡¯t, so care needs to be taken when powering from the 5V pin and USB is connected. Unfortunately, there is no guarantee you get the same module type even if you order from the same supplier.
The ESP8266 is limited on the serial port capability, so I tend to use them in conjunction with I2C and SPI peripherals. I did find a SPI to 4xUART bridge module which works well if you need to control multiple UART devices.
73, Dave
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Re: Serial control/monitoring of meters?
Dave, Node red is an amazingly flexible GUI package once through the worst of the learning curve, attached is my effort so far.? I'm sure QRP will be fine with the ESP8266, I tried multiple shielding ideas with the ESP32 but needed external antenna so the RF probably got in that way and high pass filters for 2.4Ghz became too much trouble.? I'm also not sure that all of the ESP products available on line are created equally 73 Ian 
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Re: Serial control/monitoring of meters?
Hi Ian, Yes, sorry I should have mentioned that the GUI is Node-RED. It¡¯s a very quick way of generating a control front end. I have not done extensive testing with RF, so I agree it may mean I have to move the D1 out of the ATU enclosure or add some shielding. I have wound the Stockton bridge with a 5:1 ratio and only intend to use the ATU for QRP, so it may be okay.
73, Dave
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Re: Serial control/monitoring of meters?
Because the didn't think it worth while mentioning they added the missing i to version!
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Re: Serial control/monitoring of meters?
People that use the web forum part of this often edit their posts. Those of use that only get email see a fresh post with the Edited message attached. We have no idea if they changed something important or added a comma so when I see the Edited message, I just keep going and disregard their original and all that follow. On groups I either moderate or I'm the admin, editing is turned OFF.
Vince - K8ZW.
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On 4/3/23 21:44, Max via groups.io wrote: Why do people make post like this that say [Edited Message Follows] without giving a clue as to what has changed, added or deleted? Do they expect the reader to figure it out? If it's not obvious, I delete them without reading any further. They could use bold, italics, or change the color of the text just to name a few.
Am I the only one who feels like this?
Max KG4PID
On Monday, April 3, 2023, 08:08:34 PM CDT, Ian vk2ama <ieand@...> wrote:
[Edited Message Follows]
Nice work Dave, is the Gui node red?? OTT is just the beginning;-)
Its good the esp worked for that. I tried one with a atu100 at the base of my vertical but had problems with wifi not? resetting properly, no doubt the high RF was not to its liking, no doubt fixable with the rite shielding but it was soaking up far too much time.? I ended up with a modified version of the Uart firmware interfaced with a pro-mini talking back to the shack raspberry pi and node red via modbus /rs485, totally reliable and wanted dc down there anyway.
73 Ian
--
Michigan VHF Corporation -- nobucks dot net
K8ZW -
Etsy Shop:
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Re: Serial control/monitoring of meters?
Why do people make post like this that say?[Edited Message Follows] without giving a clue as to what has changed, added or deleted? Do they expect the reader to figure it out? If it's not obvious, I delete them without reading any further. They could use bold, italics, or change the color of the text just to name a few.
Am I the only one who feels like this?
Max KG4PID?
??
On Monday, April 3, 2023, 08:08:34 PM CDT, Ian vk2ama <ieand@...> wrote:
[Edited Message Follows]
Nice work Dave, is the Gui node red?? OTT is just the beginning;-) Its good the esp worked for that. I tried one with a atu100 at the base of my vertical but had problems with wifi not? resetting properly, no doubt the high RF was not to its liking, no doubt fixable with the rite shielding but it was soaking up far too much time.? I ended up with a modified version of the Uart firmware interfaced with a pro-mini talking back to the shack raspberry pi and node red via modbus /rs485, totally reliable and wanted dc down there anyway.
73 Ian
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Re: Serial control/monitoring of meters?
Nice work Dave, is the Gui node red?? OTT is just the beginning;-)
Its good the esp worked for that. I tried one with a atu100 at the base of my vertical but had problems with wifi not? resetting properly, no doubt the high RF was not to its liking, no doubt fixable with the rite shielding but it was soaking up far too much time.? I ended up with a modified version of the Uart firmware interfaced with a pro-mini talking back to the shack raspberry pi and node red via modbus /rs485, totally reliable and wanted dc down there anyway.
73 Ian
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Bob- I noted that K8MRD YouTube channel did a recent report on the ATU-10 that he¡¯d purchased from Bangood. The US Amazon link you provided was a pricey option, $US126 plus $US30 for shipping the add on the exchange making it close to $CAD200! Amazon Canada not much better. I opted for Bangood which was $CAD120 all in. I hope that it turns out to be equivalent in build and operational quality. We shall see. -- Rod
VA3MZD?
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Re: ATU-10 kit or build - newdiytech.com website
Hi Marek,?
I wanted to avoid a balun and try to match a simple vertical wire on a 6m tall glass fiber pole (with some radials). It should be matchable on the 4 bands between 20m and 10m. Do you propose some length for the radiator and radials? I tried it with a radiator that was around 4.2 m (below 5m to avoid high impedance on 10m) and some different length radiators, going first diagonal down and then laying on the ground. But on 10m and 12m, I couldn't get a match.
?
@David:
Owen Duffy has a bunch of interesting stuff on his site about EFHWs, for different power levels (). I have only experience with power up to 10W, which is plenty for my purposes. I never used the KN5L winding method, but the data looks promising.
If you're interested in seeing some transformer data, have a look at the videos from?Evil Lair Electronics:?
73 Stephan
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Re: Serial control/monitoring of meters?
Many thanks to David (N7DDC) for this great little ATU and to Dave (WA1RCT) for porting the code to the MPLAB IDE.
To work around the issue of using UART type interfaces, I have used a homebrew software based SPI interface connected to a D1 Mini (ESP8266) module. The D1 Mini modules are relatively inexpensive, around ?5 in the UK and are great for general home automation projects, although they have a limited number of IO pins. 
The D1 Mini (ESP8266) module allows remote control and monitoring of the ATU via WIFI using MQTT messages.
The PIC operates as a SPI Master (SoftSPI) operating at low speed (5 kbit/s).
The D1 Mini operates as a SPI Slave (SoftSPI).
A fixed 16-byte frame, repeating in the main program loop of the PIC (approximately every 500ms) allows the following.
Read L, C and Csw settings.
Write L, C and Csw settings.
Read Forward Power and SWR.
Read selected EEPROM location (0 to 255).
Write selected EEPROM location (0 to 255).
A single byte message is also sent as required to indicate Tune Start, Tune Exit and Reset states.
An N-Channel MOSFET level shifter module (4 channel) is used for the 5V to 3V3 interface.
An MCP23008 IO expander allows reuse of the Tune/Rest, Auto and Bypass buttons. A screenshot on the controller on an Android device and PC is shown attached. 
Probably all a bit OTT, but it was interesting to come up with a control interface for the ATU.
73, Dave
?
?
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Hello all, ? Did someone try to update the tuning algorithm for the ATU-100 or is there an update planned? I have the situation where can reach SWR 1.1 on my random wire by manual switching to the matching L/C combination. But in Auto-Mode, the tuner typically stops at SWR 1.9. ? I¡¯d love to play around with the algorithm myself, unfortunately I don¡¯t have the proper complier to build the hex files¡ ? Best regards, Matt ????? ? ? ?
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Re: Need help with ATU-100 with QRP Mod
#ATU-10
Oh, the radio in the pic is using a 3.5" Nextion...
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Re: Need help with ATU-100 with QRP Mod
#ATU-10
Aaron - If the display is comatose double check it's wiring.? I know I often get the data and clock lines swapped and IIRC the display will appear dead.
73,
Justin B.
KI5GKD
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Re: Need help with ATU-100 with QRP Mod
#ATU-10
What I mean in not working is that I can't tell if it is on or not. The OLED is not coming on.? I will go over the suggestion that you all have gave me and I will get back to you.? Justin KI5GKD, that is the exact case that I am using, however, my metalworking skills are lacking and I butchered the front and rear panels beyond repair so I will be making some replacements. What size is your Nextion? I went with a 3.5" I will replay after I:
- check the cell values
- turns on the tandem core
- diodes
Aaron@...
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mike
Rod VA3MZD
HB9EAJ