Jul 2, 2010 · If db9 and db25 connectors were used a lot, say, on every one of the millions of personal computers sold in the last 20 years, the punches to make the mounting holes would …

Mar 5, 2024 · I want to add a DB9 connector and the ability to switch from one to the other. I know that converters exists and can be found for as cheap as $5, but I want to work on this project …

Apr 9, 2020 · RS-232 is in the same data format as UART I/O (baud rate, data bits, stop bits), but the 0v & 3.3V or 5V levels are inverted and shifted to +5-12V and –5-12V levels, which is often …

May 18, 2018 · So I was looking into the control panel (DB9 connector) and realized that VCC signal (5V) is connected to pin 4 and ground signal (GND) to pin 5. In the sewing machine …

Sep 13, 2022 · For using chassis punches on ABS boxes and lucite panels I take two pieces of scrap aluminum or steel sheet larger than the hole I want, which are pre-drilled with the punch …

Jun 1, 2020 · How would you connect them, if you need to use RS485 on a DB9, with full duplex. I see some use 1,2,3,4. Some use 2,3,7,8. GND can be 4 or 5 or 6. What would you use if you …

Jun 22, 2017 · I've been using a solder-on DB9 connector to connect four resistive measurement devices to 4 female BNC connectors en route to a Wheatstone bridge circuit. For the second …

Sep 23, 2016 · Thanks for sending the documentation and sorry for taking so long to acknowledge. I was really busy for a few months and finally just got back into it yesterday and …

Aug 28, 2020 · The last time used H.S. was back in the days of CNC programs on punched tape. (Reader & Tape Punch). The H.S. used to either indicate buffer full and to wait until buffer …

Apr 26, 2022 · In a DB9 connector, pin 5 is common, and transmit & receive are on pins 2 & 3 depending on how the connector is wired. To connect two unknown devices, measure the …