Hi Ronald.
 
First, to better understand the differences between the ESP32-CAM and the TTGO T-JOurnal, I recommend taking a look at the following article, if you haven’t already:

• https://randomnerdtutorials.com/ttgo-t-journal-esp32-camera-getting-started/

 
You need to understand the following:

• the pin definition for the TTGO-T-JOurnal is different. So you must declare the correct pins to make the camera work. which are the following:

#define PWDN_GPIO_NUM 32
#define RESET_GPIO_NUM -1
#define XCLK_GPIO_NUM 27
#define SIOD_GPIO_NUM 25
#define SIOC_GPIO_NUM 23
#define Y9_GPIO_NUM 19
#define Y8_GPIO_NUM 36
#define Y7_GPIO_NUM 18
#define Y6_GPIO_NUM 39
#define Y5_GPIO_NUM 5
#define Y4_GPIO_NUM 34
#define Y3_GPIO_NUM 35
#define Y2_GPIO_NUM 17
#define VSYNC_GPIO_NUM 22
#define HREF_GPIO_NUM 26
#define PCLK_GPIO_NUM 21

• It has a smaller number of accessible pins. You can see the TTGO T-Journal pinout here. Notice that you can only control GPIOs 14, 13, 4, and 2.
• So, you need to choose from those available pins which ones you want to control, and which ones you’ll use for sensors.

I hope this helps.
If you point out the specific project you want to build, I can probably help you better.
 
Regards,
Sara
 
 

Dear Sara, thanks for your quick reaction.
I’ll start from here and see how far I get.
Thanks again,
Ronald.

Ok.
Then, let me know if you need further help.
Regards,
Sara