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I've used the PCF8575 before. It's a 16 bit I/O its 8 bit cousin (PCF8574) is used on many i2c lcd displays. Vince. -- Michigan VHF Corp. http://www.nobucks.net/ http://www.CDupe.com/

MOSFETs are just an electronic form of variable resistor. No need for drain voltage. _._

http://www.n5ese.com/rfprobe2.htm _._

Y not?

Must be having a senior moment but how does this AGC circuit work when there is no voltage on the drain of the FET .... Phil? G4JVF

I glued strips of wood just below the lid, then set the plastic face on top of the wood. The extra pot without the knob is just the volume control. I think this is the case (

http://www.n5ese.com/l-meter.htm _._

WalMart has the Shakespeare Wonderpole 20' collapsible rod for $30 ish. ?It works great for me! ?You'll need to figure out guying though. If you want an end fed half wave, Sotabeams Pico Tuner is

Sent from my iPhone ww

Adafruit?just added another option:?https://www.adafruit.com/product/3657 ( https://www.adafruit.com/product/3657 )?Because it's a breakout board, it might be easier to use than a raw DIP chip.

In the actual state of the project/sketch you don't have as much as 5 free ports, I will suggest for version 2 the use of a I2C I/O expansion board as we already has a I2C bus and the code must be

Ashhar, I want to thank you for the work you are doing and I hope this renews interest in homebrewing ham radio equipment. I am going to build a uBITX and hope to inform you soon about my success. Art

Port expansion can be had for a few dollars:?https://www.adafruit.com/product/732 ( https://www.adafruit.com/product/732 ) . What about adding a second Nano? Would still be cheaper than upgrading to

We've now got over a thousand units in the field. ? Allard's been creating code for the majority of Bitx40v3 users who don't want a major project on their hands, they want existing hardware to work

Check out W7RLF's solution http://miscdotgeek.com/qrp-antenna-pole/ ( http://miscdotgeek.com/qrp-antenna-pole/ ) He is using an L match tuner.? If you are looking for light and easy you might try

Hello, everyone - bitx newbie here. I just got my bitx40 this week and have it wired up for receive while I wait for the next VE exam session. In the mean time I've been looking through the Raduino

Raduino firmware upgrade instructions at https://www.dropbox.com/s/s327me4umdckcpc/Raduino_SW_install.pdf?dl=0 ( https://www.dropbox.com/s/s327me4umdckcpc/Raduino_SW_install.pdf?dl=0 ) 73 AL

I like all these antenna options, but I do have to find a way to operate w/o a tree. The MI parks ask people not to run anything up into trees because of concerns about moving parasites around. I am

Raj, thanks a lot, now it compiles too on my Pc, Der Sketch verwendet 5882 Bytes (19%) des Programmspeicherplatzes. Das Maximum sind 30720 Bytes. Globale Variablen verwenden 592 Bytes (28%) des

Henning, I added these libs and it compiles as is.. I could not send this to the group so here are the dropbox links https://www.dropbox.com/s/sntcw1jl4jg702b/Newliquidcrystal%201%203%204.zip?dl=0