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Tweety · 12-09-2009, 01:54 PM

I did this on my break today...

The actual PCB won't be of much use as it's SMD and dual layer, but the schematic shows where to put the diode to have it actually protect something...

And I added a transistor and a couple of resistors, making a simple remote on/off switch... Just add a +12V wire to a single switch for all the boards... Since you are using through mount replace the SMD BC847 with the BC547 instead...

R7 is used as a jumper, place a wire here and you can use the board without the transistor and it works as your previous boards, leave R7 off and add the transistor and R6 and you can hook up the switch and stack them...

The jumper JP1 is to set Bar/Dot mode... can also hook the wire coming out to +12V and it does the same... (I'm going to pot mine in, so I needed the jumper...)

12-09-2009, 01:54 PM	#12 (permalink)
Tweety Out of my mind, back in 5 Join Date: Nov 2009 Location: Malmoe, SWEDEN Posts: 124 Thanks: 1 Thanked 7 Times in 6 Posts	I did this on my break today... The actual PCB won't be of much use as it's SMD and dual layer, but the schematic shows where to put the diode to have it actually protect something... And I added a transistor and a couple of resistors, making a simple remote on/off switch... Just add a +12V wire to a single switch for all the boards... Since you are using through mount replace the SMD BC847 with the BC547 instead... R7 is used as a jumper, place a wire here and you can use the board without the transistor and it works as your previous boards, leave R7 off and add the transistor and R6 and you can hook up the switch and stack them... The jumper JP1 is to set Bar/Dot mode... can also hook the wire coming out to +12V and it does the same... (I'm going to pot mine in, so I needed the jumper...) Attached Thumbnails Last edited by Tweety; 12-09-2009 at 02:00 PM..