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tks! just the info i needed... looks like i am getting a new little QRP tuner!

The charge current (Max.) on the TP4056 is set by external resistor, 2k6 (2600ohms) in Davids ATU-10.?? The data sheet gives a formula to calculate the charge current, from memory that's about 350-400mA.??? The actual current will taper off until full charge is reached.
vk3pe

first, tks to David for this great tuner and gift to the ham community!

my simple question: "How long does it usually take to charge batteries in the ATU-10?"

obviously, that would depend on the capacity 800mA vs 400mA, etc.

tia for any 'cocktail napkin' estimate... i have read the github docs, but do not have experience with the usb charging chip and its capabilities...

I believe you guys are homing in on a really great ATU. Going away from the BAT41 diodes to AD8361s or AD8307s is a good step to eliminate diode non-linearity problems, especially at the low end. Forward biasing the diodes also helps the low end at low power. The next step is to improve the ADC range to more than 10 bits (10bits won't cut it) . The step after that is to provide frequency compensation. The power/SWR will change depending on the Stockton Bridge characteristics (material, etc). You would like the data to be correct all the way from 160m to 6m. Or at least that's my idea and what I've done before on the AQRP mWattmeter back in 2012.

73 Kees K5BCQ

Am I correct that the adress of the OLED display is 78 and not 42? Is the adress the same for every OLED display? The display of my (2nd) kit doesn‘t display anything.?

vy 73 de
Rolf, DL8BAG?

Hi?
This tuner works in fully automatic mode, you don't have to use the control line if the tuner place is far.
The best way - assembly this tuner as DIY.

Hi, Trent

Hi all

Hi,
I just received my ATU-10 too and if someone has a user manual, or any info on how to interface it with the IC-705 I would appreciate it!
73 de Demetre M0SUY/SV1UY

How is the ATU-10 supposed to connect to the 705?
What are the pin connections/what do they do?
What length cable can be between the atu-10 and the 705?

All of it should of being answered but I cant find anything and Im not the only 1 who wants to know

Has there been any further progress ATU-10? on moving to Arduino IDE. ?

I wonder how hard would it be for those looking at this, to add an option for an 8x8 tune set, rather than current 7x7?? (I'm looking at adding the extra cap/inductor relay switching to my version of the ATU-10 PCB.)

Or maybe David, N7DDC,? might look at this possibility in current Mikro-C code.

Glenn
vk3pe

See
The USBASP was made for Atmel AVR micros.?
Not all Microchip PIC micros can be programmed, especially the fuse bits.

I have a USBASP? V2.0 used to program chips in my QRP Labs rigs, can this be used to update firmware in my ATU-100's?? If so anyone know how to connect pins?
Thank you? 73? Emory? WM3M

Never mind, had very small solder bridge between the two pins, even under my strongest mag could not really see it.? But got it off with very small blade, works fine now.

Appreciate the help.? I have not tried changing or doing anything with the firmware but will do some research and see if I can do it.
Thank you? 73? Emory? WM3M

New build of ATU-100, works fine but Auto switch does not work, both bypass and auto show _ underline on the display and both turn it off but can't get into auto?? Any suggestions or help would be greatly appreciated.? Its a recently bought kit and its version 3.0.? Only way to get it to tune is to push tune button.? Thank you? 73? Emory? WM3M