Problems downloading program to BS2

dk_akj

Hi,

I've made my first PCB with a BS2SX.

My problem is that i cant download my program to the stamp, but·I can see the debug output from the program running in the stamp (the program running was downloaded while the stamp was in an education board)

What can be wrong ??

I·think it is the ATN pin. It is connected as shown here:
http://forums.parallax.com/attachment.php?attachmentid=36205

I'm a little confused about the lower 0,1 uF lyt. Is it to be connected to "ground" or VSS ?? What is "Ground" on my PCB ??

//akj

·

Jon Williams

Vdd = +5 volts, Vss = 0 volts (ground).

Your programming connection should look something like the attached image (both caps are 0.1 uF)·-- if it doesn't, you'll need to do a bit of board surgery with an exacto knife and jumper wires.

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Jon Williams
Applications Engineer, Parallax
Dallas Office

ion

The 0.1 uF cap is to be connected to ZERO Vdc = Ground
Ion

Jonny555

I've used this setup without any problems on the 2SX Module. Maybe this can help.
Also check the power connections, and battery
Jonny