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Old Aug 01, 2012, 02:34 PM
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Germany, SN, Chemnitz
Joined Jul 2012
6 Posts
Hi Micha,

may be my D4R-II is out of order or unsuitable for my purpose. Independent of the voltage at AD2 (1.0 ... 2.0 V) Byte 4 of the 7E FE frame changes only slightly between 99 and 9A.

Many thanks
Horst
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Old Oct 19, 2012, 04:53 AM
Registered User
Austria, O, Sankt Marien
Joined Jul 2011
14 Posts
Quote:
Originally Posted by snoopy_schulz View Post
Hi Horst

In the attachment I have a newer description of the lipo monitor/dashboard program in german language. Also dashboard description is in german language.

Best regards
Micha
Hi Micha !

I built my own lipo-monitor and dashboard based on your posts in this forum, but little modified according to my desire. Many thks for your detailled posts enabling me to do the job.
I extended the set by a voice-modul in the transmitter operated by a joystick for getting battery-voltage, lipo-voltage (weakest cell), consumed lipo-power on demand.

Furthermore I intend to implement a sd-card in the transmitter to store all received data during a flight. This data should then be used in a suitable program
on a PC (at home) and displayed graphically ('flyer5' has posted in #321 a similar graphic showing RSSI,TXSI, Altitude).

Unfortunately my knowledge is rather poor regarding programming so I am asking for your help how to
- store data on sd-card
- graphically display data on PC

Your kind help is much appreciated.

Best regards / Hans-Peter
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Old Oct 19, 2012, 03:26 PM
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Germany, lake of constance
Joined Oct 2010
407 Posts
Hi Hans-Peter

Thanks for your post. I'm happy that my works have helped.

The effort to build a dashboard with a sd-card interface for data storage is very hard, it is out off my scope and time.
To make that circuit's you need a printed circuit board, a more powerful microcontroller and a lot of development time.
Also the effort to develop the pc program for displaying the telemetry data on a pc is very high. A few years ago i have developed
a pc program for displaying and storage the serial data of my lipo balancer. It has taken me some weeks to get it running.

It takes a lot of time to analyse the lipo data. Now i'm not using it, waste of time. From my point of view it is better to buy
a commercial solution.

In the attachment (code) is the lipo pc program that has me taken several weeks of development.

Best regards
Micha

Code:
package require Tk
# Mex Logger Version 3-4 Zellen
# Globals declarations
array set gui_disp {
}

proc display {} {
    global cell1 cell2 cell3 cell4 cell_sum times save rx_error dev1 dev2 dev3 \
           dev4 d_time gui_disp b1 b2 b3 b4 z y

    set save1 1
    set save2 1
    set save3 1
    set save4 1
    set save5 1

    if {$cell1 <= 2750 || $cell1 >= 4250} {set save1 0}
    if {$cell2 <= 2750 || $cell2 >= 4250} {set save2 0}
    if {$cell3 <= 2750 || $cell3 >= 4250} {set save3 0}
    if {$cell4 <= 2750 || $cell4 >= 4250} {set save4 0}

    set sec [expr $times % 60]; set mins [expr $times/60]
    set d_time [format "%01d:%02d" $mins $sec ]
    
    if {$cell4 == 0} {
      set avg [expr ($cell1+$cell2+$cell3)/3]
      set dev1 [expr ($cell1-$avg)]
      set dev2 [expr ($cell2-$avg)]
      set dev3 [expr ($cell3-$avg)]
      set a1 [expr abs($dev1)]; set a2 [expr abs($dev2)]; set a3 [expr abs($dev3)]

      if { ($a1 >= $a2) & ($a1 >= $a3) } {set n 1; set xdev $dev1}
      if { ($a2 >= $a1) & ($a2 >= $a3) } {set n 2; set xdev $dev2}
      if { ($a3 >= $a1) & ($a3 >= $a2) } {set n 3; set xdev $dev3}
      if {$xdev >= 50 && $times > 300 }  {set save5 0}
      set save [expr $save1 && $save2 && $save3 && $save5]
      set dev4 0
    }
    
    if {$cell4 > 2600} {
      set avg [expr ($cell1+$cell2+$cell3+$cell4)/4]
      set dev1 [expr ($cell1-$avg)]
      set dev2 [expr ($cell2-$avg)]
      set dev3 [expr ($cell3-$avg)]
      set dev4 [expr ($cell4-$avg)]
      set a1 [expr abs($dev1)]; set a2 [expr abs($dev2)]
      set a3 [expr abs($dev3)]; set a4 [expr abs($dev4)]
      if { ($a1 >= $a2) & ($a1 >= $a3) & ($a1 >= $a4)} {set n 1; set xdev $dev1}
      if { ($a2 >= $a1) & ($a2 >= $a3) & ($a2 >= $a4)} {set n 2; set xdev $dev2}
      if { ($a3 >= $a1) & ($a3 >= $a2) & ($a3 >= $a4)} {set n 3; set xdev $dev3}
      if { ($a4 >= $a1) & ($a4 >= $a2) & ($a4 >= $a3)} {set n 4; set xdev $dev4}
      if {$xdev >= 50 && $times > 300 }  {set save5 0}
      set save [expr $save1 && $save2 && $save3 && $save4 && $save5]
    }
    
    set xdev [format %1.0f $xdev]

    if {!$save} {incr rx_error}

    $gui_disp(te) delete 0 100 ; # time
    $gui_disp(te) insert 0 $d_time
    $gui_disp(rx) delete 0 100; #rx_errors
    $gui_disp(rx) insert 0 $rx_error

    if {$save} {
       if {$z == 4} {set z 0}
       set b1($z) $dev1
       set b2($z) $dev2
       set b3($z) $dev3
       set b4($z) $dev4
       set a1_avg [expr ($b1(0)+$b1(1)+$b1(2)+$b1(3))/4.0]
       set a2_avg [expr ($b2(0)+$b2(1)+$b2(2)+$b2(3))/4.0]
       set a3_avg [expr ($b3(0)+$b3(1)+$b3(2)+$b3(3))/4.0]
       set a4_avg [expr ($b4(0)+$b4(1)+$b4(2)+$b4(3))/4.0]
       
       if {abs($a1_avg) > 49 && $times > 300} {
         tk_messageBox -icon error -title "Cell error" -message "Cell1 deviation > 49 mV !"
         exec "C:/Programme/Windows Media Player/wmplayer.exe" "D:/Elektroflug/Lipos/titi.wav" &
       }
       if {abs($a2_avg) > 49 && $times > 300} {
         tk_messageBox -icon error -title "Cell error" -message "Cell2 deviation > 49 mV !"
         exec "C:/Programme/Windows Media Player/wmplayer.exe" "D:/Elektroflug/Lipos/titi.wav" &
       }
       if {abs($a3_avg) > 49 && $times > 300} {
         tk_messageBox -icon error -title "Cell error" -message "Cell3 deviation > 49 mV !"
         exec "C:/Programme/Windows Media Player/wmplayer.exe" "D:/Elektroflug/Lipos/titi.wav" &
       }
       if {abs($a4_avg) > 49 && $times > 300} {
         tk_messageBox -icon error -title "Cell error" -message "Cell4 deviation > 49 mV !"
         exec "C:/Programme/Windows Media Player/wmplayer.exe" "D:/Elektroflug/Lipos/titi.wav" &
       }
       incr z

       $gui_disp(cell_1) delete 0 100 ; # voltage cell 1
       $gui_disp(cell_1) insert 0 $cell1
       $gui_disp(cell_2) delete 0 100 ; # voltage cell 2
       $gui_disp(cell_2) insert 0 $cell2
       $gui_disp(cell_3) delete 0 100 ; # voltage cell 3
       $gui_disp(cell_3) insert 0 $cell3
       $gui_disp(cell_4) delete 0 100 ; # voltage cell 4
       $gui_disp(cell_4) insert 0 $cell4
       $gui_disp(cell_s) delete 0 100 ; # voltage cell sum
       $gui_disp(cell_s) insert 0 $cell_sum

       $gui_disp(ce_num) delete 0 100 ; # Dev. @ Cell
       $gui_disp(ce_num) insert 0 $n
       $gui_disp(ce_dev) delete 0 100 ; # of
       $gui_disp(ce_dev) insert 0 $xdev
       
       if {((($cell_sum > 12480) && ($cell4 == 0)) || (($cell_sum > 16640))) && ($y < 20) } {
         exec "C:/Programme/Windows Media Player/wmplayer.exe" "D:/Elektroflug/Lipos/toto.wav" &
         incr y  
       }
    }
}

proc get_rs232 {} {
   global inp comp cell1 cell2 cell3 cell4 cell_sum rx_error rx_error1 times
    
    if {[catch {gets $inp cont}]} {
         incr rx_error
         close $inp
         set inp [open $comp RDONLY ]
         fconfigure $inp -blocking 1 -mode {9600,n,8,1}
         set cont "00000000000000000000"
    }
    set cont_length [string length $cont]
    set cell1234 [string range $cont 4 19]

    if {[catch {set rs_error [expr 0x$cell1234]}] } {
         set cell1234 "00000000000000000000"
         incr rx_error1
    }

    if {$rx_error1 > 10} {
        close $inp
        set inp [open $comp RDONLY ]
        fconfigure $inp -blocking 1 -mode {9600,n,8,1}
        set rx_error1 0
    }

    if {$rx_error >= 4 && $times < 6} {
        tk_messageBox -icon error -title "Equalizer" -message "Accu or Equalizer is not connected !"
        close $inp
        exit
    }

    set cell1 [string range $cell1234 0 3]
    set cell2 [string range $cell1234 4 7]
    set cell3 [string range $cell1234 8 11]
    set cell4 [string range $cell1234 12 15]

    if {[catch {set cell1 [expr 0x$cell1]}] } {set cell1 0}
    if {[catch {set cell2 [expr 0x$cell2]}] } {set cell2 0}
    if {[catch {set cell3 [expr 0x$cell3]}] } {set cell3 0}
    if {[catch {set cell4 [expr 0x$cell4]}] } {set cell4 0}
    if {($cell4 < 2600) || ($cont_length == 20) } {set cell4 0}
    set cell_sum [expr $cell1 + $cell2 + $cell3 + $cell4]
}

proc init_rs232 {} {
   global comp inp rs232_inp

   if {[catch {set inp [open $comp RDONLY ]}]} {
         tk_messageBox -icon error -title "COM Port" -message "$comp not available !"
         exit
   }

   fconfigure $inp -blocking 1 -mode {9600,n,8,1}
   after 50
   set rs232_inp 1
}

proc measure {} {
  global times
  init_rs232; set times -2
  focus .bu.1; .bu.1 configure -state active
  proc measure_repeat {} {
     global times
     incr times; incr times
     get_rs232
     display
     after 2000 measure_repeat
  }
  measure_repeat
}

proc record {} {
  global times file_out out accu

  focus .bu.2; .bu.2 configure -state active
  set date [clock format [clock seconds] -format {%d%m%Y }]
  set fname "LiPo$accu $date.csv"
  set out [open $fname w]
  append lipo  "Time" "," "Dev. Cell 1" "," "Dev. Cell 2" "," \
               "Dev. Cell 3" "," "Dev. Cell 4" "," "Cell sum"

  puts $out $lipo
  init_rs232; set times -2
  set file_out 1

  proc record_repeat {} {
     global times save out d_time dev1 dev2 dev3 dev4 cell_sum

     incr times; incr times
     set lipo ""
     get_rs232
     display
     append lipo  $d_time ","  $dev1 "," $dev2 "," $dev3 "," $dev4 "," $cell_sum
     if {$save} {puts $out $lipo}
     after 2000 record_repeat
  }
  record_repeat
}

proc leave {} {
      global inp rs232_inp out file_out
      if {$file_out == 1}  {close $out}
      if {$rs232_inp == 1} {close $inp}
      exit
}

proc mex_gui {} {
      global comp accu rx_error gui_disp
      wm minsize . 240 410
      wm title . "MEX Lipo Monitor 5.8"

      set m [frame .m]
        set f1 [frame $m.f1]
          set lf1 [label $f1.lf1 -text "Select : " -font {Arial 12 }]
          tk_optionMenu $f1.1 comp COM4 COM5 COM6 COM7
          pack $lf1 -side left
          pack $f1.1
        pack $f1
        set f2 [frame $m.f2]
          set lf2 [label $f2.lf2 -text "Select : " -font {Arial 12 }]
          tk_optionMenu $f2.1 accu ACCU1 ACCU2 ACCU3 ACCU4
          pack $lf2 -side left
          pack $f2.1
        pack $f2
      pack $m -fill y -pady 7

      set a [labelframe .a -bd 3]
        set a1 [frame $a.a1]
          set al [label $a1.l -text "Cell 1 " -font {Arial 12 }]
          set cell_1 [entry $a1.e -width 6 -justify right -font {Arial 12 }]
          pack $al -side left
          pack $cell_1 -side right
        pack $a1  -fill x -pady 5

        set a2 [frame $a.a2]
           set al [label $a2.l -text "Cell 2 " -font {Arial 12 }]
           set cell_2 [entry $a2.e -width 6 -justify right -font {Arial 12 }]
           pack $al -side left
           pack $cell_2 -side right
        pack $a2 -fill x -pady 5

        set a3 [frame $a.a3]
          set al [label $a3.l -text "Cell 3 " -font {Arial 12 }]
          set cell_3 [entry $a3.e -width 6 -justify right -font {Arial 12 }]
          pack $al -side left
          pack $cell_3 -side right
        pack $a3 -fill x -pady 5

        set a4 [frame $a.a4]
          set al [label $a4.l -text "Cell 4 " -font {Arial 12 }]
          set cell_4 [entry $a4.e -width 6 -justify right -font {Arial 12 }]
          pack $al -side left
          pack $cell_4 -side right
        pack $a4 -fill x -pady 5
        
        set a5 [frame $a.a5]
          set al [label $a5.l -text "Cell sum " -font {Arial 12 }]
          set cell_s [entry $a5.e -width 6 -justify right -font {Arial 12 }]
          pack $al -side left
          pack $cell_s -side right
        pack $a5 -fill x -pady 5
      pack $a -fill y -pady 15

    set b [labelframe .b -bd 3]
        set b1 [frame $b.b1]
          set bl [label $b1.l -text {Time [min:sec] } -font {Arial 11 }]
          set te [entry $b1.e -width 6 -justify right -font {Arial 11 }]
          pack $bl -side left
          pack $te -side right
        pack $b1  -fill x -pady 5

        set b2 [frame $b.b2]
          set bl [label $b2.l -text "Rx Errors" -font {Arial 11 }]
          set rx [entry $b2.e -width 6 -justify right -font {Arial 11 }]
          pack $bl -side left
          pack $rx -side right
        pack $b2 -fill x -pady 5
    pack $b -fill y -pady 1

    set c [labelframe .c -bd 3]
        set c1 [frame $c.c1]
          set cl1 [label $c1.l1 -text "Max deviation @ Cell " -font {Arial 11 }]
          set ce_num [entry $c1.e1 -width 1 -font {Arial 11 }]
          pack $cl1 -side left
          pack $ce_num -side left
          set cl2 [label $c1.l2 -text "of " -font {Arial 11 }]
          set ce_dev [entry $c1.e2 -width 3 -justify right -font {Arial 11 }]
          pack $cl2 -side left
          pack $ce_dev -side left
        pack $c1 -fill x -pady 5
    pack $c -fill y -pady 15

    set bu [labelframe .bu]
        button $bu.1 -text "Measure" -command {measure} -font {Arial 11 }
        button $bu.2 -text "Record" -command {record}  -font {Arial 11}
        button $bu.3 -text "Exit" -command {leave}   -font {Arial 11 }
        pack $bu.1 $bu.2 $bu.3 -side left -ipadx 11
    pack $bu

    set gui_disp(cell_1) $cell_1
    set gui_disp(cell_2) $cell_2
    set gui_disp(cell_3) $cell_3
    set gui_disp(cell_4) $cell_4
    set gui_disp(cell_s) $cell_s
    set gui_disp(te)     $te
    set gui_disp(rx)     $rx
    set gui_disp(ce_num) $ce_num
    set gui_disp(ce_dev) $ce_dev
}

########################## Main ###############################################

set ignore [catch {eval {wm iconbitmap . -default [file join 507.ico]}}]
global file_out rs232_inp rx_error rx_error1 b1 b2 b3 b4 z y
set z 0
set y 1
set b1(0) 0
set b1(1) 0
set b1(2) 0
set b1(3) 0
set b2(0) 0
set b2(1) 0
set b2(2) 0
set b2(3) 0
set b3(0) 0
set b3(1) 0
set b3(2) 0
set b3(3) 0
set b4(0) 0
set b4(1) 0
set b4(2) 0
set b4(3) 0
set file_out 0
set rs232_inp 0
set rx_error -1
set rx_error1 0

mex_gui
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Last edited by snoopy_schulz; Oct 19, 2012 at 04:28 PM.
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Old Oct 21, 2012, 01:31 PM
Registered User
Austria, O, Sankt Marien
Joined Jul 2011
14 Posts
Hi Micha,

many thks for your prompt reply and dedailled explanation.

Have you any recommedation regarding commercial solution in mind, which meets my requirement best ?
Please advice.

Best regards / Hans-Peter
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Old Oct 21, 2012, 01:40 PM
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Austria, O, Sankt Marien
Joined Jul 2011
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Hi Werner,

your post #321 is very interesting, especially the graphic view 'flight5.jpg'.
I am top interrested in which program you use for display and how the data are transmitted.

Best regards / Hans-Peter
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Last edited by Efly2005; Oct 21, 2012 at 01:42 PM. Reason: mistake in typing
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Old Oct 24, 2012, 04:28 PM
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snoopy_schulz's Avatar
Germany, lake of constance
Joined Oct 2010
407 Posts
Hi Hans-Peter

May use the Frsky equipment for data storage, i have read in the FrSky forum's that the display FLD-02 or DHT-U can store data on a sd-card. But i'm not quit sure, i'm using only the Frsky D8R receivers and the DFT module in my FC 18 V3+ radio. Ask RENATOA or other's within forum's. RENATOA is an expert of the Frsky equipment. Otherwise look e.g. at the UniLog equipment for data storage.

PS: My dashboard/display and my lipo- or current sensor is not conform to the FrSky dislays or sensor hub specification's.

http://www.sm-modellbau.de/shop/index.php?cPath=11

Best regards
Micha
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Old Oct 25, 2012, 02:44 AM
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Joined Sep 2007
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Only DHT-U has micro SD card support and log feature.
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Old Oct 25, 2012, 03:23 AM
Registered User
Austria, O, Sankt Marien
Joined Jul 2011
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Hi Micha,

many thks for your reply and advice.
I also use FC18 transmitter with DHT-modul and D8R receivers.
Unilog sounds interesting.
In the meantime I discovered an interesting thread "SD-Karte Datenlooger"
http://www.uni-stuttgart.de/akamodell/projekte/?p=132
What's your opinion about ?

Best regards / Hans-Peter
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Old Oct 30, 2012, 07:03 AM
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Germany, NRW, Bonn
Joined Jul 2010
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Quote:
Originally Posted by Efly2005 View Post
Hi Micha,

many thks for your reply and advice.
I also use FC18 transmitter with DHT-modul and D8R receivers.
Unilog sounds interesting.
In the meantime I discovered an interesting thread "SD-Karte Datenlooger"
http://www.uni-stuttgart.de/akamodell/projekte/?p=132
What's your opinion about ?

Best regards / Hans-Peter
Hallo,
doesn't this give you all you need - provided you are ready to use an Android phone as telemetry output.
www.hapeweb.com
http://www.rcgroups.com/forums/showt...2#post21820748
regards
HaPe
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Old Oct 30, 2012, 07:54 AM
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Austria
Joined Jan 2004
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Quote:
Originally Posted by Efly2005 View Post
Hi Micha !

I built my own lipo-monitor and dashboard based on your posts in this forum, but little modified according to my desire. Many thks for your detailled posts enabling me to do the job.
I extended the set by a voice-modul in the transmitter operated by a joystick for getting battery-voltage, lipo-voltage (weakest cell), consumed lipo-power on demand.

Furthermore I intend to implement a sd-card in the transmitter to store all received data during a flight. This data should then be used in a suitable program
on a PC (at home) and displayed graphically ('flyer5' has posted in #321 a similar graphic showing RSSI,TXSI, Altitude).

Unfortunately my knowledge is rather poor regarding programming so I am asking for your help how to
- store data on sd-card
- graphically display data on PC

Your kind help is much appreciated.

Best regards / Hans-Peter
Hi,

The best was is to get a OpenLog module : https://www.sparkfun.com/products/9530? ... and you can write directly from any serial source into a micro SD ...

Then you can make a little PC / Smartphone software for display the data ..

If you don't want to buy OpenLog .. you can buy a ATmega328 board, and a SD adapter (SD adapter for Arduino, is very cheap, so the ATmega 328 board) ... but the OpenLog module is extremely compact ... the firmware / code of OpenLog is open ... but maybe need some messed up Arduino version for it ...

Tchuss

e_lm_70

ps: Alternatively, you can use a bluetooth module, that send the serial stream to your smartphone, and this can take care to store it ... actually there is already some Android apps that do it .. not open source as far as I know ..


pps: Else ... as Renatoa state: take a : "Only DHT-U " .. and put on e-bay your Telemetry TX module ... I personally don't like much the DHT-U ... but is my taste only
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Old Oct 31, 2012, 08:16 AM
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Hallo Efly2005 ,

to your question , similar to snoopy schulz we developed our own software and hub .And as we have to build it only from the information frsky gave us, regarding to the protocol so all was made to our needs and taste .Its our own standard .In the transmitter run a mega168 to get the data from the modul do the bytestuffing and calculate variosound and so on. This leads to a special datastream we send out to serial connection used via blue tooth or cable.
With this connection i can use a self programmed freebasic program to colect the data and store it in an ascii file. This ascii file is readable in professional data programs or much simpler in exxel. But my problem is I have no time for documentation.
I built a small datalogger with flashchips , after it was in function I had a small netbook and it
was much easier to look and store this way.

hope that explained a litle bit.

Best regards
Werner
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Old Nov 01, 2012, 03:50 PM
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Germany, NDS, Hanover
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Quote:
Originally Posted by HaPe View Post
Hallo,
doesn't this give you all you need - provided you are ready to use an Android phone as telemetry output.
www.hapeweb.com
http://www.rcgroups.com/forums/showt...2#post21820748
regards
HaPe
HaPe,

probably only a few modelists use bluetooth to transfer the telemetry output of the FrSky Hack-module to an android device, - so your "FRS-Logger" app isn't yet very popular. But I'm sure, it's only a question of time and it will be.

Last weekend I had the opportunity to compare the reliability and practibility of your app "FRS-Logger" against the V-Speak-module solution, which a college is using. This ended up with a deeply impressed college who now will buy himself an android mobile and bluetooth module for FrSky to make use of the fascinating features of your app.

Best regards

Detlef
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Old Nov 09, 2012, 02:16 PM
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Hi to all !

Many thks for your kind assistance and replies.

Best regards / Hans-Peter
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Old Dec 07, 2012, 11:39 AM
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Germany, lake of constance
Joined Oct 2010
407 Posts
FrSky Two-Way Protocol Mechanisms doc update

Here is an update of the FrSky Two-Way Protocol Mechanisms V1 document, now with some scope pictures of my serial DFT
transmitter output.

Best regards
Micha
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Last edited by snoopy_schulz; Dec 07, 2012 at 02:51 PM.
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Old Dec 08, 2012, 10:14 AM
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Spain, CN, Tacoronte
Joined Jul 2003
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Quote:
Originally Posted by snoopy_schulz View Post
Here is an update of the FrSky Two-Way Protocol Mechanisms V1 document, now with some scope pictures of my serial DFT
transmitter output.

Best regards
Micha
Thanks a LOT !!
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