V5 Solenoid cable

[Nfoster]

I am looking at the v5 solenoid cable that goes from the brain to the solenoid itself. Does anyone know how the cable works as in the wiring or how does it go from 3 wires to 2 wires. I’m wondering if anyone knows how the wiring works in the black knob thing in the center.

[jpearman]

Have a look at this old topic, there’s a conceptual schematic half way through the first post.

Cortex digital IO ports and the pneumatics driver

I’m going to try and explain why we sometimes have problems with the pneumatics firing and why different programming options are behaving differently. To understand what’s going on some background knowledge is needed on how the digital IO ports are configured by firmware and what features the specific micro controller in the cortex has. To start, lets look at the simplified schematic of a digital IO port from the cortex user manual. [cortex_digital_port.jpg] This shows the 1k ohm series res…