CS1922M RJ11

Control Aten 1922M KVM over serial using Raspberry PI Pico

Hardware

• Raspberry PI Pico
• Aten CS1922M KVM
• 3.3V TTL to RS232 adapter
• SSD1306 OLED display
• 2 buttons
• 1 cable to connect to KVM serial port (RJ10 male)

Software

• MicroPython

Wiring

Here's how to connect the components:

Raspberry PI Pico to SSD1306 OLED Display

• GPIO 2 (SDA) to SDA on the OLED display
• GPIO 3 (SCL) to SCL on the OLED display
• GND to GND on the OLED display
• VBUS (5V) to VCC on the OLED display

Raspberry PI Pico to Buttons

• GPIO 0 to one leg of Button 1, and the other leg to GND
• GPIO 1 to one leg of Button 2, and the other leg to GND

Raspberry PI Pico to 3.3V TTL to RS232 Adapter

• GPIO 4 (TX) to RX on the adapter
• GPIO 5 (RX) to TX on the adapter
• GND to GND on the adapter

3.3V TTL to RS232 Adapter to Aten CS1922M KVM

• Connect the RS232 port of the adapter to the RJ10 male cable, which then connects to the KVM serial port.

Please note that the GPIO numbers are based on the machine.Pin numbers used in the main.py script. Make sure to adjust these numbers if you've used different pins in your setup.

Thanks

Thank you Kert for the advice and all the help!