Just thought I'd post a link here to a new Arduino-based project.
The Arduino monitors some front panel switches (Power On/Off, Run/Halt, LTC On/Off, Restart) and provides the necessary output signals for the 10-pin connector on the rear of a QBUS backplane (BDCOK H, BPOK H, BEVNT L, BHALT L).
As part of the power-up/power-down sequence for the PDP-11, it also turns an ATX power supply on and off, to power the backplane.
The LTC output defaults to 60Hz, but can also be configured for 50 Hz by adding a jumper.
The hardware is very simple: just an Arduino UNO. No Arduino "shield" or I/O electronics are required. You will of course need to wire up the front panel controls (4 switches and 2 LEDs) and fabricate the cabling to the ATX power supply and to the QBUS backplane.
Here's the link -> http://avitech.com.au/?page_id=1657
Feedback and bug reports are most welcome.
Malcolm.
The Arduino monitors some front panel switches (Power On/Off, Run/Halt, LTC On/Off, Restart) and provides the necessary output signals for the 10-pin connector on the rear of a QBUS backplane (BDCOK H, BPOK H, BEVNT L, BHALT L).
As part of the power-up/power-down sequence for the PDP-11, it also turns an ATX power supply on and off, to power the backplane.
The LTC output defaults to 60Hz, but can also be configured for 50 Hz by adding a jumper.
The hardware is very simple: just an Arduino UNO. No Arduino "shield" or I/O electronics are required. You will of course need to wire up the front panel controls (4 switches and 2 LEDs) and fabricate the cabling to the ATX power supply and to the QBUS backplane.
Here's the link -> http://avitech.com.au/?page_id=1657
Feedback and bug reports are most welcome.
Malcolm.