Serial connection to BS2

"Hello world!"

Hey

Non ee here.

I am trying to connect to my BS2 via a serial port. I need to use the DB9 my laptop is old so no USB.

Resting:
Pin1 -3.76
Pin2 -7.84
Pin3 -8.10
Pin4 0

Pin24 10.96
Pin23 0
Pin22 5
Pin21 5

When I use the Port Scan tool I get a Yes for Loopback but No Echo

When try to connect:
Pin1 3.83
Pin2 7.94
Pin3 8.18
Pin4 0

I am using version 2.2.6 BS Editor.

Do I have a hardware issue or port issue here?

Thanks for your help,

Matt

stamptrol

Matt,

Hopefully you've got the stamp mounted in a carrier board of some sort. If not, have a look at the Stamp schematic on the parallax web-site. The usual problem is having pins 2, 3 interchanged.

Connect the 9-pin connector of the stamp board to the 9-pin of the computer with a "straight-thru" serial cable.

Does the port on the computer work with other equipment?

Cheers

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Tom Sisk

http://www.siskconsult.com
·

"Hello world!"

Hi Tim,

Thanks for your suggestions.

Attached is the diagram of my serial connector. I am just using four wires with no serial cable. And one jumper for loopback.

I haven't been able to find a serial attachement. Tried using a ps2 mouse with a converting connector but it didn't work.

Thanks again,

Matt

"Hello world!"

Update:

Works on another computer so it must be a problem with my laptop.

Matt

allanlane5

You may have to, on your laptop, turn off the "FIFO Buffers" on the serial port.

Start, Control Panel, System, Hardware tab, Device Manager, Click "Ports", Right-click "Serial Port", Select "Properties".
Select "Port Settings" tab, click "Advanced".

Uncheck "Use Fifo Buffers". Click OK to close each window.