- Tue, 2012-06-12 18:15
- 5 Comments
I would like to tell you about my serial connector junction project, witch is called a "Quad Port".
This project all started with the need for an alternative to the "Y" connector cable. The first unit I built was just 4 serial cable DIN connectors on a 2 inch square Radio Shack project board. It served it purpose as a 4 connector junction for connecting multiple commodore devices into the serial chain. This worked great for connecting Jim Brain's Micro IEC drive. I first unit I made was all hand wired and I liked it so well that I thought I would try to mass pronounce it. I contacted Jim Brain to see if he could get the PC boards made for me. He suggested I put it into some sort of enclosure, before I ordered the boards. So I hunted around and found a 2 x 2 inch Lego style block, I thought I was just the ticket. I later found a black project box, but Jim suggested that I add switches to the output ports, or connectors, to interrupt the ATT line to each attached device, which would allow like numbered drives or printers to be connected at the same time and could be connected or disconnected with the flip of a switch rather than switching them of or fiscally disconnecting them. This changed the board size, but that was the design I went with and Jim had the first 10 boards created. I assembled the units and ordered more PC boards last year, which I am assembling and am trying to figure out how to MASS produce or machine the enclosures. I have already come up with some improvements to the circuit. By adding a reset button and double pole double throw switches, which will allow for selected device reset.