N7DDC designed the popular “ATU-100” 100 watt antenna tuning unit (ATU) which is freely available as a kit or even in built up form, from vendors such as eBay, Aliexpress and others. N7DDC’s QRP ATU-10 is based on his other work of the ATU-100 but uses latching relays for lower power consumption and battery use.
VK3PE done a redesign. Changed the PIC devices (PIC16F1454 and PIC16F18877) to a larger easier to solder footprint and actually still available from a number of suppliers. As well changed the footprints to solder 0805 parts in place of the 0603 size.
For more information on the N7DDC ATU-10 is here. http://www.carnut.info/ATU_N7DDC/ATU-10/ATU-10%20build.html.
Or, the ATU100 Groups.io Group.
Or see pdf.
Attached a view pics of my own build.
Below the ATU the small backback for the 3.7V/2600mAh LIPO. For leftover PCB´s see PCB swap meet
Hallo VK3PE,
i found this information for the iCom IC-705 with the ATU-100.
Can You please send me the actual Sketch for the ATiny85 and the Arduino Nano for this project.
Is the Sketch also used with the schematic “Draft V1.1. PCB”?
With best regards
Rainer
DO6EV
Hallo Rainer, sorry das ich so spät antworte,hab den Post nicht gesehen.
War die Anfrage an mich gerichtet?
Grüsse Martin. OE9SAU