I did some “mass production” of LED drivers:
The one with the big inductor is a 1W version. The inductor is much too big but I didn’t have a smaller one. The other boards are for 3W LEDs. More info can be found here.
I also assembled one of the light 2 boards:
I found the remaining inductor and soldered it onto the board. And I also added the connector, connected it to a LED and a power supply and switched on. And see! It works! Without any fiddling or whatever
And immediately I had to play around with it and combine it with a PIR sensor. The nice thing is that the circuits are almost fully compatible. The ouput of the HC-SR501 can be directly connected to the PWM input of the LED driver. And both run on the 12V power supply. Unfortunately the PIR will only work up to 20V so my planned 24V will be a bit too much for it.
Today I got my PCBs:
They look very nice Except that the mounting hole has not been drilled, very clever Have to find out what went wrong, but I guess I forgot to include the NPTH drill file. Who cares, maybe I’m going to cut away the last centimeter of the board anyway.
Here is one cut away and almost fully assembled:
I hope the PT survived the soldering torture. Hand soldering these is not so easy because they should have solder below them to make better thermal contact. I’ll find out if it works as soon as i found out where my inductors are hiding…