Thanks Thomas, that makes me very happy. I just hooked a pot to the tune connections and the freq. stopped and works in both directions. I've been screwing with this little board for a couple of days, now I can get to work on the main board. You made my day. Jerry K5LRU Harwood, Texas > -------- Original Message -------- > Subject: [minima] Re: Control Board Questions > From: Thomas Sarlandie <thomas@xxxxxxxxxxxxx> > Date: Wed, February 12, 2014 3:08 am > To: "minima@xxxxxxxxxxxxx" <minima@xxxxxxxxxxxxx> > > > Jerry, > > This sounds good. The frequency will stop moving if your pot is centered. > You should have 2.5v on the arduino pin connected to it. > > The second number on the display tells you if the last frequency change was > a small change or a large change. Basically we can re-program the si570 in > two ways and this field on the screen just tell us which one was last > used. It's not very useful now that we know it's working well we will > probably remove that in the future. What would you like to see instead? > > Congrats! > > Thomas > > On Wednesday, February 12, 2014, <jerry@xxxxxxxxxxxxxxxx> wrote: > > > > > What should the control board read on first boot up. The first line on > > my LCD reads:( A: 14.2xxxx 2 ) > > and the second line reads: ( USB TX 1 ) The frequency reading on the > > first line is changing, it increments up by 100's from the 14.2 > > something up to 99.999, then starts over at 10.100 and keeps cycling > > like this. On the second line of the display the number 1 after TX > > changes from a 1 to a 0 with every frequency change. > > I have nothing hooked to the board but power. Jerry > > K5LRU > > Harwood, Texas > > > > > >