Relay only works the first time

[mike117]

I have this setup:

• Raspberry PI 2 Model B
• GrovePi+
• Grove Relay from Seeed Studio

$ ./firmware_version_test.sh 
Checking for firmware version
=============================
GrovePi has firmware version: 1.2.7

When I execute this test code the relay works only the first time and then nothing happens:

$ python /home/pi/Desktop/GrovePi/Software/Python/grove_relay.py 
on  (turns the Relay ON)
off  (turns the Relay OFF)
on  (nothing happens)
off  (nothing happens)
on  (nothing happens)
off  (nothing happens)
...

On the GrovePi, the RST LED is off. Only the green power led is on. Sometimes I got the RST LED red on. But it seems random.

Does anybody knows how I could debug this?

[karan259]

@mike117 : what kind of power supply are you using with the GrovePi. Can you post a a few pictures of your setup on the forums here.