Driving a SSR with a ULN2003a

[kve]

Hello!
I am desparately trying to drive a SSR with my raspberry pi to control a 380V circuit. The SSR is a Fotek SSR 25DA but the raspberry pi can't provide it with enough current it seems to actually make it switch. Everything works with a 5V 8 channel array (i.e. my logic works and swithches on and off the relay) but that is not OK to drive high power circuits I understand... I am pretty new to electronics, but OK with programming. I found the suggestion to use a ULN2003a but that doesn't seem to work neither so I must be doing something wrong
I've attached a basic drawing of the wiring that is related to the ULN, SSR and raspberry Pi.
Many thanks to everybody trying to help me forward. The project is to drive a floor heating remotely

Kind regards,

Koen

[tenochtitlanuk]

Hard to read your drawn circuit.
Here's what I'd use. You may need "Show Image' to see at decent size...


NB Wire the high voltage side safely!!

1 Wire the SSR and load and fuse. Check that a 4.5V battery on the input terminals switches the load on. CARE- mains is lethal...
2 Wire the 2003 to the SSR circuit, and to Pi ground and 5V. Do NOT yet connect the Pi GPIO output. Check that a 3V cell turns on the 2003 and hence the load.
3 Add the connection from GPIO to 2003 and check that programmatically toggling it switches load on/off.

[kve]

Great thanks, will try it next week-end!

[kve]

It works!!! many thanks for your great help!