Arduino Nano Not working

[manisaranbala]

My device U85B .Nano RX TX connect not reading.but TTL good reading .we need Arduino Nano or 2560 program connect Desktop.it is possible?

[iliasam]

Sorry, I don't understand your question. Can you describe step by step what you already tried? What hardware do you have?

[manisaranbala]

my device 40m 85B TTL MODE Reading good. but not reading Arduino Nano serial communication

[manisaranbala]

https://github.com/iliasam/Laser_tape_reverse_engineering/assets/5657183/c912efa5-3983-4914-af42-9ec90e0fe0e4

laser light power is down in few minutes. and also the reading is differ so how can solve it

[manisaranbala]

set volt 2.2 and 3 and 3.2 same Problems

[manisaranbala]

https://github.com/iliasam/Laser_tape_reverse_engineering/assets/5657183/d4dd4189-3ae5-41b0-8331-4e6f3562143d

[manisaranbala]

Result_2023-11-14 12-49-20.csv

[iliasam]

Do you have this problem with USB-UART converter? Also, try to disconnect RX line of U85B module - maybe 5V from Arduino is bad for U85B.

[manisaranbala]

internal battery (AAA)same problem. Need continue Data Reading possible?

[manisaranbala]

How to find this model good or bad

[manisaranbala]

[iliasam]

Again: "Do you have this problem with USB-UART converter? Also, try to disconnect RX line of U85B module - maybe 5V from Arduino is bad for U85B"

[manisaranbala]

https://github.com/iliasam/Laser_tape_reverse_engineering/assets/5657183/57c5d04f-e0e8-43cd-845b-881dcae52d1a

[manisaranbala]

Amplitude Reduse Automatically . That time mismatched calculation . how to solve this problems?