Initial Setup/Hardware Configuration

The default hardware setup is for the Armachat Compact with 320x240 pixel screen utilizing ST7789 controller. If you have different hardware, you will need to edit the armachat/config.py or the config.txt file. If the config.txt file exists, it supersedes the settings in the armachat/config.py file. The directions will show editing of the config.txt as that is the preferred method for configuring the Armachat.

To configure an Armachat, such as the Armachat Watch, follow these steps.

1. If the Armachat does not have a config.txt file in the root directory, create one. You may copy the following contents to place in the config.txt file.
   

   # Brightness may be from 0 to 4
   bright = 4
   
   # Volume may be from 0 to 6
   volume = 6
   
   # Sleep may be 0 to 6
   #	0 = Never		4 = 120
   #	1 = 15 secs		5 = 300
   #	2 = 30 secs		6 = 600
   #	3 = 60
   sleep = 0
   
   # Tone may be from 1000 to 10000 in steps of 1000
   tone = 5000
   
   # Melody may be from 0 to length of items minus one, in melodies 
   # list of the included melody file in audio.py
   melody = 30
   
   # Region values may be 
   # US, EU433, EU868, CN, JP, ANZ, RU, KR, TW, IN, NZ865, TH, Unset
   region = "US"
   
   # LoRa Profile may be from 1 to 6
   # Matches Mestastic values in table at
   # https://meshtastic.org/docs/settings/channel
   #	1 = Bw500Cr45Sf128       Short/Fast
   #	2 = Bw125Cr45Sf128       Short/Slow
   #	3 = Bw250Cr47Sf1024      Medium/Fast
   #	4 = Bw250Cr46Sf2048      Medium/Slow
   #	5 = Bw31_25Cr48Sf512     Long/Fast
   #	6 = Bw125Cr48Sf4096      Long/Slow
   loraProfile = 1
   
   # Frequency values are dependent on the module freq
   freq = 915.25
   
   # Power values may be 5 to 23
   power = 5
   
   hopLimit = 3
   unitName = "ARMACHAT"
   myName = "Test 1"
   myAddress = "12-36-124-1"
   groupMask = "255-255-255-0"
   destinations = "Test 2|12-36-124-2|Test 3|12-36-124-3|Test 4|12-36-124-4"
   password = "Sixteen byte key"
   passwordIv = "Sixteen byte key"
   # Model value may be max, compact, or watch
   model = "watch"
   

   
   
2. Edit the "model" value by setting it to one following values:
   • max
     • Display Resolution: 320x240 pixels (Rotation: 270°)
     • Display Controller: ST7789
   • compact
     • Display Resolution: 320x240 pixels (Rotation: 270°)
     • Display Controller: ST7789
   • watch
     • Display Resolution: 160x80 pixels (Rotation: 90°)
     • Display Controller: ST7789
3. If you are not located in the United States, you may need to modify the radio settings to stay compliant with your local communications laws. The following settings are the radio settings.
   • region
   • loraProfile
   • freq
   • power
   The LoRa radio configuration settings are based on the Meshtastic settings found at https://meshtastic.org/docs/settings/config/lora. The settings are checked to make certain that they are valid for the region selected. The settings for frequency and power are calculated usign the infromation in the table below.
   
   

   LoRa Region Information

   region	module	freqCenter	freqStart	freqEnd	dutyCycle	powerLimit
   US	915	915.000	902.000	928.000	100	30
   EU433	433	433.500	433.000	434.000	10	12
   EU868	868	869.525	869.400	869.650	10	16
   CN	433	490.000	470.000	510.000	100	19
   JP	915	924.300	920.800	927.800	100	16
   ANZ	915	921.500	915.000	928.000	100	30
   RU	868	868.950	868.700	869.200	100	20
   KR	915	921.500	920.000	923.000	100	30
   TW	915	922.500	920.000	925.000	100	30
   IN	866	866.000	865.000	867.000	100	30
   NZ865	866	866.000	864.000	868.000	100	30
   TH	915	922.500	920.000	925.000	100	16
   Unset	915	915.000	902.000	928.000	100	30