Graphical interface (Android screenshot) entirely made with GUI-O. 
https://www.owon.com.hk/products_owon_4_1|2_digits_xdm1000_series_bench-type_digital_multimeter
... and HW connected to the serial connector.
It can be connected via WiFi or Bluetooth to a smartphone.
@VNB said in GUI-O with Nano 33 BLE and the ArduinoBLE Library:
[2023-09-20T09:13:57.992] @init
[2023-09-20T09:13:57.996] @cls
[2023-09-20T09:13:58.023] @guis BGC:#FFFFFF
[2023-09-20T09:13:58.180] |LB UID:title X:50 Y:15 TXT:"Simple light switch" FFA:"font8" FSZ:3.5
[2023-09-20T09:13:58.239] |LB UID:tap_me X:50 Y:70 TXT:"TAP ME!" FFA:"font8" FSZ:3 FFA:"font5"
[2023-09-20T09:13:58.295] |CB UID:brightness X:50 Y:50 W:90 BTH:5 HAH:8 HAW:8 VIS:0 STA:135 ENA:45 FGC:#000000 SFGC:#FFFF00 BGC:#CBCBCB
[2023-09-20T09:13:58.340] |IM UID:light_off X:50 Y:50 IP:"https://i.imgur.com/3VbsS0Z.png" VIS:1
[2023-09-20T09:13:58.395] |IM UID:light_on X:50 Y:50 IP:"https://i.imgur.com/gNdck9A.png" VIS:0
[2023-09-20T09:14:05.913] @light_off 1
[2023-09-20T09:14:05.913] @light_off VIS:0
[2023-09-20T09:14:05.943] @light_on VIS:1
[2023-09-20T09:14:06.004] @brightness VIS:1 VAL:100
[2023-09-20T09:14:12.333] @brightness 45.8
[2023-09-20T09:14:15.932] @brightness 16.7
[2023-09-20T09:14:19.772] @brightness 5.4
Try this:
@init
@cls
@guis BGC:#FFFFFF
|LB UID:title X:50 Y:15 TXT:"Simple light switch" FFA:"font8" FSZ:3.5
|LB UID:tap_me X:50 Y:70 TXT:"TAP ME!" FFA:"font8" FSZ:3 FFA:"font5"
|CB UID:brightness X:50 Y:50 W:90 BTH:5 HAH:8 HAW:8 VIS:0 STA:135 ENA:45 FGC:#000000 SFGC:#FFFF00 BGC:#CBCBCB
|IM UID:light_off X:50 Y:50 IP:"https://i.imgur.com/3VbsS0Z.png" VIS:1
|IM UID:light_on X:50 Y:50 IP:"https://i.imgur.com/gNdck9A.png" VIS:0
@light_off 1
@light_off VIS:0
@light_on VIS:1
@brightness VIS:1 VAL:50
@brightness VAL:45.8
@brightness VAL:16.7
@brightness VAL:5.4
...VAL:... is missing.
This is not necessary. The file is saved in the local GUI-O folder on the phone. To read it, use the read file function with an external text editor for Android. For me, this is the best solution. The file can be in *.txt format, change the extension that can be opened directly by another application, for example *.txt, *.log, *.doc, ...
I use this:
https://play.google.com/store/apps/details?id=com.apptiva.logviewer
@Bernard
In your Sub, the Return statement is used twice. Maybe that's the problem.
After first return statement must be:
Guio_ini_2:
@hls 250 should be at the end of the Init procedure.
I checked the Init process without the Bascom code and it works OK.
Maybe put |CH
|CH UID:ch0 X:50 Y:75 W:50 H:50 XLO:0 BSZ:120 VLP:2 BGC:#E53A4456 FGC:#EF33EAF5 SHE:1 FSZ:2.5 RAD:1 CHT:2 CHN:'MESURE HUM / TEMP / PRESSION' XTC:12 YTC:6 YMA:4 XMA:2 XHI:75 PZO:0
@hls 250
just before @hls 250
Otherwise, your GUI-O screen is very nice 
@Sato
If you use Bascom, this function (GetToken) is the best for parsing text.
[https://www.mcselec.com/index2.php?option=com_forum&Itemid=59&page=viewtopic&t=2543&highlight=gettoken
@sls 500 - Request to hide loading screen. This means that all widgets will appear on the screen at the same time.
If you have many widgets in the Init procedure without this command, you may see each one being installed separately, especially if a low baud rate is used.
At the end of the initialization process must be @hls 10 The number means how long in ms the animation is displayed
These commands are useful when reinitialization happend. If you don't clear GUI-O widgets, they are duplicated and doesn't display properly.
@cls - clear the screen
@clh - clear all hardware components
@clo - clear orientation - when you want to set the screen to the default orientation
@gse - this is a general setting (specify the delimiter character COD:0 - space, COD:1-coma TSC:39 means " ' " delimiter on i.e. TXT
@guis - screen definition
I usually use this:
@sls 200
@cls
@clh
@gse COD:0 TSC:39
@guis BGC:#000000 ASR:0.4486
....
@hls 10
ASR:0.4486 is screen ratio for Samsung A13,
BGC:#0000000 means black background on home screen.
@HilmihanEkim2208
Hello.
For easier communication, next time please write in English.
This is done with Bascom IDE and not Arduino. The source code is in the attachment.
'------------------------------------------------------------------------------
' ECG Electro Cardio Gram
' 2021-07-01 (c)gammda
' Ver-1
' CardioGraph
' Use Arduino UNO analog input A1 (pinc.1) and AD8232 modul
' .-----------------------.
' |ATMEGA328 |
' |Clock 11.059200MHz |
' |Baud:19200 |
' '-----------------------'
' 1.Install GUI-O application on smartphone
' www.gui-o.com or https://play.google.com/store/apps/details?id=com.guio.guioapp
' 2.Start GUI-O and make Bluetooth connection with arduino board
' 3.Press on start GUI-O button
'------------------------------------------------------------------------------
$regfile = "m328pbdef.dat"
$crystal = 11059200
'$baud = 9600 'default baudrate for Bluetooth HC06
$baud = 19200 'NOTE! For proper connection, it is necessary to set 19200 on the bluetooth module HC06.
'For first test you can use default baudrate 9600
Config Serialin = Buffered , Size = 120
Const Timer1reload = 43200
Config Timer1 = Timer , Prescale = 256
Load Timer1 , Timer1reload
On Ovf1 Timer1_isr
Enable Timer1
Start Timer1
Enable Interrupts
'-ADC--------------------------------------------------------------------------
Dim Channel As Byte 'A/D conversion
Channel = 1
Config Adc = Single , Prescaler = Auto , Reference = Avcc
Start Adc
Enable Interrupts
'------------------------------------------------------------------------------
$lib "GetToken.Lib"
$external Gettoken
Declare Function Gettoken(strinput As String , Byval Bseparator As Byte , Byval Bcount As Byte ) As String
Dim Sep As Byte
Dim Pozicija As Byte
'------------------------------------------------------------------------------
Dim Cardio As Integer
Dim Pulse As Byte
Dim Pulsex As Byte
Pulsex = 60
Dim Timx As Byte
Dim Timy As Byte
Dim Pul1 As Byte
Dim Soun_d As Bit
Soun_d = 0
Dim Flags As Bit
Flags = 0
Dim Data_key As Byte
Dim Znak As String * 15
Dim Rdata As String * 100
Dim Init As String * 4
Gosub Guio_ini 'start initalization procedure on GUI-O - write objects on screen of smart phone
'------------------------------------------------------------------------------
Main:
Do
If Ischarwaiting() = 1 Then
Gosub Read_data
End If
Cardio = Getadc(channel) 'read walue of AD
If Cardio > 740 Then 'sound if amplitude je more than 740
If Soun_d = 1 Then
Print "@ton1 EDUR:500" 'sound appear on smart phone
End If
Pul1 = Pul1 + 1 'calculate pulse
If Timy = 4 Then
Pulse = Pul1 * 10
Pul1 = 0
Timy = 0
End If
End If
Print "@ch1 PLI:" ; Chr(34) ; "pl1" ; Chr(34) ; " YP:" ; Chr(34) ; Cardio ; Chr(34) ' write graph data (AD data) ECG to GUI-O
If Timx > 1 Then
Print "@ch0 PLI:" ; Chr(34) ; "pl0" ; Chr(34) ; " PLC:" ; Chr(34) ; "#000000" ; Chr(34) ; " YP:" ; Chr(34) ; Pulse ; Chr(34) ; " XP:" ; Chr(34) ; "0" ; Chr(34) 'Write graph pulse to GUI-O
Print "@lbpulse TXT:" ; Chr(34) ; Pulse ; Chr(34) 'write numeric value on GUI-O
Timx = 0
End If
Loop
End 'End of main cycle
'------------------------------------------------------------------------------
Read_data:
Reset Watchdog
Data_key = Inkey()
If Data_key = "@" Then Input Rdata Noecho
Sep = &H20
Pozicija = 1
Znak = Gettoken(rdata , Sep , Pozicija)
If Znak = "btsound" Then
Toggle Soun_d
If Soun_d = 1 Then
Print "@btsound BTH:0.25" 'If sound is ON button outline appear
Else
Print "@btsound BTH:0" 'If sound is OFF button outline disappear
End If
End If
Init = Mid(rdata , 1 , 4)
If Init = "init" Then 'reading "@init" from GUI-O
Gosub Guio_ini
End If
Rdata = ""
Return
'-Initialization procedure GUI-O Objects-------------------------------------------------------
Guio_ini:
Print "@sls 500" 'start writting objects
Print "@cls" 'clear screen
Print "@clh" 'clear HW components
'Print "@clo" 'clear orientation
Print "@guis BGC:#000000 ASR:0.449671" 'bacground color X-Y ratio
Print "|SORI UID:sori1 HID:sori ORI:2 SEN:0"
Waitms 250
Print "|IM UID:imx X:15 Y:50 W:100 H:100 ROT:0 SHE:0 VIS:1 OPA:1 SCM:2 IP:" ; Chr(34) ; "ECG.jpg" ; Chr(34) 'GUI-O Image ECG.jpg copy to smartphone \Phone\Android\data\com.guio.guioapp\files\Pictures\
Print "|TON UID:ton1 HID:ton EDUR:1000 TONT:24" 'GUI-O define ton
Print "|CH UID:ch0 X:65 Y:25 W:72 H:50 BTH:0.1 XTC:10 YTC:8 VIS:1 BSZ:5 DRA:0 BGC:#FFFFFF FGC:#900000 RAD:0 LT:0.15 XMA:5 YMA:8 SHVL:1 VLP:0 CHN:" ; Chr(34) ; "PULSE" ; Chr(34) ; " FFA:" ; Chr(34) ; "font6" ; Chr(34) ; " FSZ:4"
Print "|CH UID:ch1 X:65 Y:75 W:72 H:50 BTH:0.1 XTC:10 YTC:8 VIS:1 BSZ:200 DRA:0 CHT:2 BMA:0.03 XLO:0 XHI:40000 BGC:#FFFFFF FGC:#900000 RAD:0 LT:0.15 XMA:5 YMA:8 SHVL:1 VLP:0 CHN:" ; Chr(34) ; "ELECTRO CARDIOGRAM" ; Chr(34) ; " FFA:" ; Chr(34) ; "font6" ; Chr(34) ; " FSZ:4"
'GUI-O graph for pulse and Cardio
Print "|LB UID:lbpulse X:87 Y:35 ALP:1 ROT:0 SHE:1 FGC:#000000 FFA:" ; Chr(34) ; "font6" ; Chr(34) ; " FSZ:16 TXT:" ; Chr(34) ; "---" ; Chr(34) 'Label for number-pulse
Print "|LB UID:lbpname X:85 Y:23 ALP:1 ROT:0 SHE:1 FGC:#000000 FFA:" ; Chr(34) ; "font8" ; Chr(34) ; " FSZ:4 TXT:" ; Chr(34) ; "PULSE BMP" ; Chr(34) 'Label for name
Print "|LB UID:lbname X:2 Y:92 ALP:1 ROT:0 SHE:1 FGC:#FFFFFF FFA:" ; Chr(34) ; "font7" ; Chr(34) ; " FSZ:10 TXT:" ; Chr(34) ; "ECG" ; Chr(34) 'Label general name
Print "|BT UID:btsound X:22 Y:92 W:10 H:10 ROT:0 RAD:1 SHVR:0.8 SHE:1 SHC:#404040 BGC:#808B96 SBGC:#808B96 FGC:#FFFFFF FSZ:6 BTH:0 FFA:" ; Chr(34) ; "font6" ; Chr(34) ; " TXT:" ; Chr(34) ; "Sound" ; Chr(34) ; " SVAL:" ; Chr(34) ; "Stop" ; Chr(34)
'Button for sound ON/OFF
Print "@ch1 PLI:" ; Chr(34) ; "pl1" ; Chr(34) ; " PLC:" ; Chr(34) ; "#000000" ; Chr(34) ; " YP:" ; Chr(34) ; Cardio ; Chr(34) ; " XP:" ; Chr(34) ; "0" ; Chr(34)
'write data for cardio
Print "@hls 250" 'end writting objects
Return
'-Timer_ISR--------------------------------------------------------------------------------
Timer1_isr:
Timx = Timx + 1
Timy = Timy + 1
Return
'------------------------------------------------------------------------------------------
Here is the new RFID access control screen.
https://i.imgur.com/8NE7gvC.png
I found this simple FM radio module.
https://www.amazon.ae/Digital-FM-Radio-Module-76-0MHz-108-0MHz/dp/B01N4AHISZ
It offers control via UART.
Added Arduino NANO, Bluetooth module HC-06 and of course using GUI-O.
The result is here.
Here is also Youtube video and schematic.
