How to modify Color Zoom of FPV thermal imaging camera

We offer two methods for modifying the color and zoom settings on the FPV thermal imaging camera.

1. Via the keypad serial port board parameter configuration board. Vcan2023-tool.
   • Click the Mode (zoom) button once to change the color of the thermal imaging camera.
   • Click the Mode (zoom) button twice to change the zoom in or out in 1x 2x 4x of the thermal imaging camera.
2. Via the UART AT commands. Please read this port.

This method applies to the following FPV thermal imaging cameras.

Commonly used commands

Change Iron Red: F0053678200002D0FF
Zoom-in X1: F0053670120000B8FF
Zoom-in X2: F0053670120001B9FF
Zoom-in X4: F0053670120002BAFF
Zoom-in X8: F0053670120003BAFF
Save: F0053674100000BAFF

1. Module Interface Definition

Pin definition

1	Power supply	DC 6~16V Power supply
2	GND	land / Ground
3	CVBS	CVBS video signal
4	UART_TXD	module UART send 3.3V
5	UART_RXD	moduleUART take over 3.3V

2. Communication method

2.1. Serial communication format

Before establishing communication with the host, the communication parameters need to be set on the host according to the following table. 

Thermal imaging camera serial port communication format

Name	definition
baud rate	115200 bps
start bit	1 bit
data bits	8 bits
Stop bit	1 bit
Verification method	NONE

2.2. Description of serial port data transmission method

Communication send packet

Fields included in the FPV thermal imaging camera core serial communication data packet

BEGIN

SIZE

Device address

Class Command Address

Subclass command address

Read and write flags

DATE0

DATA(N-1)

CHK

END

（N+4）

] 

Data transfer communication example

This example is “Set the current color to Fusion 1 mode”。 

Step 1 Query the device address command, class command address, subclass command address, and read-write flag.

Query the serial port command table in Appendix A to obtain the device address command(0x36) and the class command address (0x78), subclass command address (0x20), and flag bit (write: 0x00).

Step 2 Calculate SIZE, DATA, and CHK values. 

SIZE: N+4. The color setting is N=1 and SIZE is 0x05. 

DATA: Color fusion mode, corresponding hexadecimal value is 0x02.

CHK: The fields are 0x36, 0x78, 0x02, 0x00 and 0x02. After accumulation, the result of taking the lower 8 bits is 0XD0. 

It can be calculated using the calculator that comes with your PC. 

Combined with the above parameters, the host sends the command F0 05 36 78 20 00 02 D0 FF to the camera.

Command Direction	BEGIN	SIZE	Device Address	class command address	subcategory life Order address	Flag bit	DATA	CHK	END
Host Send	0xF0	0x05	0x36	0x78	0x20	0x00	0x00	0xD0	0xFF
Camera feedback	0xF0	0x05	0x36	0x78	0x20	0x03	0x01	0xD3	0xFF

Specific definitions of each field in communication data packets

Field	Number of bytes	describe		numerical value	Location
BEGIN	1	command package start		0xF0	1
SIZE	1	The length is N+4			2
Device address	1	Device address		0x36	3
Class command address	1	Class command address			4
Subclass command address	1	Subclass command address			5
Flag bit	1	Host sends packet	Read and write flag	Write as 0x0Reads as 0x1	6
		Camera feedback data packet	Correct return flag	0x03
			Error code return flag	0x04
DATA (data content)	N	Host sends packet	Pass data content	Default 0x00	7- (N+6)
		Camera feedback data packet	Feedback normal command status
			Feedback error command status
			Data content
CHK	1	sum check		Valid check bit range: After adding up the device address + class command address + subclass command address + return flag + DATA, take the lower 8 bits	(N+7)
END	1	End of command package		FF	(N+8)

Communication receiving the data packet

 In the command format returned by the thermal imaging core to the host, DATA0 is the high byte, and DATA (N-1) is the low byte. 

BEGIN

SIZE

Device address

class command address

subclass command address

Read and write flag

DATE0

DATA(N-1)

CHK

END

（N+4）

Specific definitions of each field in communication data packets

Field	Number of bytes	describe		numerical value	Location
BEGIN	1	command package start		0xF0	1
SIZE	1	command length		The length is N+4	2
Device address	1	Device address		0x36	3
Class command address	1	Class command address			4
Subclass command address	1	Subclass command address			5
returnlogoBit	1	Host sends packet	Read and write flag	0x03	6
DATA	N	Host sends packet	Pass data content	Default 0x00	7- (N+6)
CHK	1	sum check		Valid check digit range: After accumulating device address + class command address + subclass command address + return flag + DATA, take the lower 8 bits	(N+7)
END	1	End of command package		FF	(N+8)

Color Settings

Thermal imaging is based on infrared radiation intensity and has no color information. The image algorithm maps a set of colors based on the grayscale value, namely pseudo color. The camera supports multiple pseudo-color modes for users to choose from. The default is white hot 0x00.

Commands and parameters

Set the pseudo-color type displayed by the camera:

Command Direction	SIZE	Device Address	Class Command Address	0x00: White heat 0x01: Black heat 0x02: Fusion 1 0x03: Rainbow 0x04: Fusion 2 0x05: Iron red 1 0x06: Iron red 2 0x07: Dark brown 0x08: Color 1 0x09: Color 2 0x0A: Ice Fire 0x0B: Rain 0x0C: Green heat 0x0D: Red heat 0x0E: Dark blue	Flag bit	DATA	CHK
Host Send	Calculated based on actual data	0x36	0x78	0x20	0x00	0x00: White heat 0x01: Black heat 0x02: Fusion 1 0x03: Rainbow 0x04: Fusion 2 0x05: Iron red 1 0x06: Iron red 2 0x07: Dark brown 0x08: Color 1 0x09: Color 2 0x0A: Ice fire 0x0B: Rain 0x0C: Green heat 0x0D: Red heat 0x0E: Dark blue	Calculated based on actual data
Camera feedback	0x05	0x36	0x78	0x20	0x03	0x01	Calculated based on actual data

Read the current pseudo-color mode of the camera

Command Direction	SIZE	Device Address	Class Command Address	Sub Class Command Address	Flag bit	DATA	CHK
Host send	0x05	0x36	0x78	0x20	0x01	0x00	Calculated based on actual data
Camera feedback	Calculated based on actual data	0x36	0x78	0x20	0x03	0x00: White heat 0x01: Black heat 0x02: Fusion 1 0x03: Rainbow 0x04: Fusion 2 0x05: Iron red 1 0x06: Iron red 2 0x07: Dark brown 0x08: Color 1 0x09: Color 2 0x0A: Ice and fire 0x0B: Rain 0x0C: Green heat 0x0D: Red heat 0x0E: Dark blue	Calculated based on actual data

Example:

 Read the current pseudo-color mode of the camera： 

 F0 05 36 78 20 01 00 CF FF 

Set the current pseudo color toFusion 1 Mode

F0 05 36 78 20 00 02 D0 FF 

 Save current settings

Issue this command to save the current settings of the camera.

Commands and parameters

Command Direction	SIZE	Device Address	Class Command Address	SubClass Command Address	Flag bit	DATA	CHK
Under the host send	0x05	0x36	0x74	0x10	0x00	0x00	Calculated based on actual data
Camera feedback	0x05	0x36	0x74	0x10	0x03	0x01	Calculated based on actual data

Example:

 Save the current color mode of the camera F0 05 36 74 10 00 00 BA FF camera returns

 F0 05 36 74 10 03 01 BE FF

3. Serial port software

sscom32.win7.exe

Set the camera zoom-in commands

zoom in 1: F0053670120000B8FF X1
zoom in 2: F0053670120001B9FF X2
zoom in 4: F0053670120002BAFF X4
zoom in 8: F0053670120003BAFF X8

Regarding the FPV Thermal imaging camera.

This is the night test result of the Analog thermal imaging camera.
It can be installed on FPV drones and quadcopters
This is a good infrared night vision camera.
It can detect animals, cars, or humans hiding at night that are emitting heat.
It is a miniaturized integrated product characterized by small size and low power consumption.
It can be installed on various types of equipment.
such as drone gimbals, robot gimbals, individual helmets, Pods, etc.
It supports analog signal cvbs output to replace your FPV camera.
It supports automatic and manual calibration and background.
It also supports receiving serial port commands and can support 1x, 2x, 4x, and 8x zoom-in.
It contains 15 different display colors, which can be switched at any time by sending AT commands.
There is also a mobile phone interface version, which can help with safety checks at night.
Especially when hiking or hunting at night, open the third eye.
The entire camera weighs only 25 grams and is very light.
Now let’s look at this camera’s appearance and what interfaces it has.
As a professional drone accessories supplier, we provide free customization, production, and sales.
If you have any project needs, please get in touch with us and we will provide you with free solutions.

How to choose a Thermal Imaging Camera?