serial hook up to arduino uno

[cabinhacker]

so i am trying to hook up the serial pins to my arduino uno using simple jumper cables. im not very good at this stuff, so can anyone show me how to do this? thanks.

[mightyohm]

You need to use a level shifter or convert your kit to run on 5V, so that the voltage levels are compatible with the Arduino.
There's some info on the 5V conversion here:
viewtopic.php?f=15&t=3431#p5730

Specifically:

1. Change R6 to 1K ohm
2. Change R11 to 330 Ohms

Then you can can make these connections:

Power & Ground
1. Connect +5v from Arduino to Geiger PCB Pulse J6 pin 1.
2. Connect GND from Arduino to Geiger PCB Pulse J6 pin 3

Serial Data
1. Connect Arduino D10 to Geiger PCB Serial J7 pin 5

and that should work.

If you want to use a level shifter, an Adafruit Protoshield and a TTL inverter like the 74LS04 works well.

[cabinhacker]

ok thank you!