Got a Chisholm Databook with no power supply - made one from a computer power supply with correct voltage and followed instructions from http://partinen.sigmatic.fi/databook/ to make the unit. Panel powers up, then after 15 seconds or so, turns off. Unplugging power, then replugging it gives the same result. Any ideas out there??
This panel as a light sensor
First of all, make sure there is a bright light hitting the underside of this panel, or it will not power on correctly. Secondly, make sure your voltages and current is correct. I was fustrated after waiting months to get the powersupply from my dad in another state, and it wouldn't come on. For some reason it worked perfectly when I took it home.
Here is the pinout for this panel:
The power connector is a standard 5 pin DIN with the following pin out: (1=gnd, 4=+12V, 2=gnd, 5=+12V, 3=+5V). When looking at the female 5 pin DIN connector on the side of the Rainbow panel pin 1 is on the left, then pins 4,2,5, and 3. So it makes a smiley face with the pins as 1,4,2,5,3 from left to right.
When testing the panel, don’t forget that there is a photo sensor inside the panel that will only turn the product on if it detects a bright light source from being placed on an overhead projector. None of the LEDs, LCD panel, or fan will turn on without a light source shining through the panel.
First of all, make sure there is a bright light hitting the underside of this panel, or it will not power on correctly. Secondly, make sure your voltages and current is correct. I was fustrated after waiting months to get the powersupply from my dad in another state, and it wouldn't come on. For some reason it worked perfectly when I took it home.
Here is the pinout for this panel:
The power connector is a standard 5 pin DIN with the following pin out: (1=gnd, 4=+12V, 2=gnd, 5=+12V, 3=+5V). When looking at the female 5 pin DIN connector on the side of the Rainbow panel pin 1 is on the left, then pins 4,2,5, and 3. So it makes a smiley face with the pins as 1,4,2,5,3 from left to right.
When testing the panel, don’t forget that there is a photo sensor inside the panel that will only turn the product on if it detects a bright light source from being placed on an overhead projector. None of the LEDs, LCD panel, or fan will turn on without a light source shining through the panel.
I have had some experience with AT power supplies to power up panels and ran into a simular problem. Some need a 12v car turn signal lamp to be hooked up to the 12v output or 5v output (that will depend on the supply). This tells the supply to stay fully on and stay on.
Having to much current doesn't hurt a thing. You can have a 1000 amp supply and work excellent as long as the voltage is correct. Metal Halide lamps and other types of lighting would be about the only exception to that, but that's lighting, not a panel that only will use what it needs and ignores the rest.
Having to much current doesn't hurt a thing. You can have a 1000 amp supply and work excellent as long as the voltage is correct. Metal Halide lamps and other types of lighting would be about the only exception to that, but that's lighting, not a panel that only will use what it needs and ignores the rest.
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