Hello all,
I am hoping for some help with my project. I want to connect a 35mm film camera to my computer to access settings and data on the camera. The camera comm protocol is RS-232. So I put together a simple PCB based on the MAX202E IC to interface with my PC (see schematic).
I am able to successfully read settings from the camera but I have to attempt multiple times before I get a successful connection and even then I cannot download any data because even if after multiple attempts it finally starts downloading data, it almost immediately gives an error.
I have tried different cables, different computers and baud rates but nothing seems to change the behaviour. I have read the data sheet for the MAX202E multiple times but I cannot seem to find anything that can shed some light on the issue.
On the schematic, the left DB9 connector is the input from the camera and right DB9 connector is the output to the PC. The camera provides 6V regulated that powers the IC and two ground pins.
Any help will be greatly appreciated!!