So, I am trying to reprogram this...

I am running Tekkit 3.1.2 and ccSensors, I need a MFSU Reader. It is all set up. I just cant get the dang program to work. I am at the point where I have to use the computer console, which i can do. Only problem with that is It does not update itself automatically.

SO, I took the console code of ccSensors. I looked at it, and I cannot make it out. I was thinking that since this worked I could take a portion of the code to make it so ONLY the MFSU Reading would show. Since I am a bit new at LUA, I need help.

Here is the Console Code:

os.unloadAPI("sensors");
os.unloadAPI("sensorsUI");
os.loadAPI("/rom/apis/sensors");
os.loadAPI("/rom/apis/sensorsUI");
local writeAt=sensorsUI.writeAt
local tArgs={...};
local sizeX, sizeY = term.getSize()

function dispReadings(x,y,title,tData,maxlen,rows)
writeAt(x,y,title..":");
local page=1;
local erow=rows*page;
local r=1;
for i,v in pairs(tData) do
  writeAt(1,1,string.sub(tostring(i)..":"..tostring(v),1,maxlen));
  r=r+1
end
end

function select(x,y,title,tData,maxlen,rows)
local r=nil;
writeAt(x,y,title..":"..#tData);

local srow=1;
local erow=srow+rows;
--[[
for i=srow,srow+rows-1 do
  if i>#tData then break; end
  writeAt(x+2,y+1+i,string.sub(tData[i],1,maxlen-x));
end
]]--
for i,v in pairs(tData) do
  writeAt(x+2,y+1+i,string.sub(v,1,maxlen));
end

local done=false;
local isel=1;
local vsel=1;
writeAt(x+1,y+1+isel,"*")
repeat
evt,k = os.pullEvent()
if evt=="key" then
  writeAt(x+1,y+1+isel," ")
  if k == 200 then --up
   isel=isel-1
  elseif k== 208 then  --down
   isel = isel+1
  elseif k == 28 or k ==57 then -- selection made
   r = tData[isel];
   done=true;
  end
  if isel<1 then isel=#tData
  elseif isel > #tData then isel=1 end
  writeAt(x+1,y+1+isel,"*")
 
end
until done

return r;
end
function statusBar(s)
sensorsUI.clearArea(1,sizeY,sizeX,sizeY)
writeAt(1,sizeY,s);
end
function updateState(x,y,s,p,t)
local maxlen = x+20 - (x+1+7);
fillArea(x,y+11,x+20,sizeY-1,"|");
writeAt(x+1,y+12,"Sensor:"..string.sub(s,1,maxlen))
writeAt(x+1,y+13,"Probe :"..string.sub(p,1,maxlen))
writeAt(x+1,y+14,"Target:"..string.sub(t,1,maxlen))

sensorsUI.saveDashboard(s,p,t)
end
function main(x,y,title,side)
local tOpts={"Select Sensor","Select Probe","Select Target","getReading","quit"}
local tOptsD={"Select a Sensor from connected sensors in range",
	  "Select a probe from current sensor",
	  "Select target for current sensor and probe",
	  "Display readings",
	  "exit console",
	 }
local sSensor,sProbe,sTarget = sensorsUI.loadDashboard()
--local sSensor="none"
--local sProbe="none"
--local sTarget="none"

--[[
local tOpts={"Select Sensor"};
if sSensor ~="none" then
  tOpts[2] ="Select Probe";
end
]]--
local menuX = (20+x)/2-string.len(tOpts[1])/2+x;
local isel=1
local done=false;
local data={};
sensorsUI.writeAt(sizeX/2-string.len(title)/2,1,title);
-- sensorsUI.vr(sizeX/2,4,10);
--menu
fillArea(x,y,x+20,y+9,"|");
writeAt(menuX,y+2,tOpts[1])
for mi=1,#tOpts do
  writeAt(menuX,y+1+mi,tOpts[mi]);
end
statusBar(tOptsD[isel]);

-- state
if sSensor~="none" and  sProbe~="none" and  sTarget~="none" then
  updateState(x,y,sSensor,sProbe,sTarget);
end


writeAt(menuX-1,y+1+isel,"*")
repeat
evt,k = os.pullEvent()
if evt=="key" then
  writeAt(menuX-1,y+1+isel," ")
  if k == 200 then --up
   isel=isel-1
  elseif k== 208 then  --down
   isel = isel+1
  elseif k == 28 or k ==57 then -- selection made
   if isel==1 then   -- select sensor
    data = sensors.getSensors(side)
    fillArea(x+20+3,y,sizeX-1,y+#data+4,"|");
   
    sSensor = select(x+20+3+1,y+1,"Available Sensors",data,sizeX-2,sizeY-3);
    sProbe="none";
    sTarget="none";
    sensorsUI.clearArea(x+20+3,y,sizeX-1,y+#data+4);
    updateState(x,y,sSensor,sProbe,sTarget);
    isel = isel+1;
-- get sensor type
--"cardType","name","distance","SensorRange","loc"
--local cardInfo = sensors.getSensorInfo(side,sSensor,"cardType");
--writeAt(x,y+10,string.sub(cardInfo.cardType,1,string.find(cardInfo.cardType," ")));
   
   elseif isel==2 then  -- select probe
   
    data =sensors.getProbes(side,sSensor);
    fillArea(x+20+3,y,sizeX-1,y+#data+4,"|");
    sProbe = select(x+20+3+1,y+1,"Available Probes",data,sizeX-2,sizeY-3);
    sTarget="none";
    updateState(x,y,sSensor,sProbe,sTarget);
    sensorsUI.clearArea(x+20+3,y,sizeX-1,y+#data+4);
    isel = isel+1;
   elseif isel ==3 then  -- select target
    data = sensors.getAvailableTargetsforProbe(side,sSensor,sProbe);
    if #data==0 then
	 statusBar("No Relevant targets found!")
   
    else
    fillArea(x+20+3,y,sizeX-1,y+#data+4,"|");
    sTarget = select(x+20+3+1,y+1,"Available Targets",data,sizeX-3,sizeY-3);
    updateState(x,y,sSensor,sProbe,sTarget);
    sensorsUI.clearArea(x+20+3,y,sizeX-1,y+#data+4);
    isel = isel+1;
    end
   elseif isel==4 then  -- getReading
   
    data = sensors.getSensorReadingAsDict(side,sSensor,sTarget,sProbe);
    fillArea(1,1,1,1,"|");
    dispReadings(1,1,"Readings",data,sizeX-3,sizeY-3);
    --for i,v in pairs(data) do
    -- sensorsUI.printPaged("    "..tostring(i)..":"..tostring(v));
    --end
   elseif isel==5 then done=true end
  end
 
 
  if isel<1 then isel=#tOpts
  elseif isel > #tOpts then isel=1
  elseif sSensor=="none" and isel~= 5 then isel=1
  elseif sProbe=="none" and isel>2 and isel~= 5 then isel=2
  end
  statusBar(tOptsD[isel]);
 
  writeAt(menuX-1,y+1+isel,"*")
 
end
until done
end
function fillArea(x1,y1,x2,y2,cBorder)
if y2>=sizeY-1 then y2=sizeY-1 end
if x2>=sizeX then x2=sizeX end
if cBorder =="|" then
  cBorderSide="-";
else
  cBorderSide=cBorder;
end
term.setCursorPos(x1,y1)
term.write("/")
term.write(string.rep(cBorderSide,x2-x1-1));
term.write("\\")
term.setCursorPos(x1,y2)
term.write("\\")
term.write(string.rep(cBorderSide,x2-x1-1));
term.write("/")
for y=y1+1,y2-1 do
  term.setCursorPos(x1,y)
  term.write(cBorder)
  term.write(string.rep(" ",x2-x1-1));
  term.write(cBorder)
end
end

local side = sensors.getController()
local monside,mon =sensorsUI.getMonitor()
local sensor="none"
local probe="none"
local target= "none"
local title="ccSensors Console Program v3"
local done=false
term.clear();

main(1,2,title,side)
--clearArea(10,10,15,15);
--repeat

--until done
term.setCursorPos(1,sizeY);
--[[
/---------------------------\
Select Sensor


]]--

Then, I got the code I took. I made this built on the console code. Just… A much smaller format.

sensor = "Sensor"
sensors.setActiveReading(side,sensor,"EUStorage")
l = getAvailableTargetsforProbe("right", sensor, "EUStorage")
core = sensors.getReadingAsTable("right",sensor,l,"ic2.common.TileEntityElectricMFSU","maxStorage","energy","output")
term.clear()
term.setCursorPos(1,1)
power = core[2]
print("======POWER STATUS======")
print("Power Level  : "..power.." EU/t ");
mon.setCursorPos(1,6)
mon.write("Power Level : "..power.." EU/t");

With the code listed above it gives me an error stating 'sensors:96: bad argument: string expected, got nil'
I am soo confused. I just want to have a nice monitor to show the status of my Power level.

Please Help.

Also, I got a picture to show how the computer is setup, its a bit compact. Only because I got a lot of machines behind me.

I believe the problem is in the second line. You are passing in two variables, side and sensor.
Line 1 defines sensor properly, but side is not defined.

What I would suggest is, at the top add the line:

side = sensors.getController()

That will auto-detect which side of the computer you have the sensor controller attached to.

Additionally, I can recomend a pretty nice program which I use to monitor my 4 main MFSUs on a big monior.
Search this forum for "sencenter" by KevinW. It has a menued setup system, similar to the console program, for picking what sensor to monitor and where to place it on the monitor (use 1,1 for the first.) After that, it saves settings to a file and you can just run it, it will show a nice display on the sensor and update every second.