63 lines
2.4 KiB
Markdown
63 lines
2.4 KiB
Markdown
You got the WLED chain board manufactured.
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It is now time to test if the hardware has been assembled correctly.
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Test the 6-60V power input for shorts:
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- use a multimeter in resistance mode
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- put the COM lead on the 6-60V screw terminal - terminal
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- put the V lead on the 6-60V screw terminal + terminal
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- the multimeter should read O.L or above 10 MOhn
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- put the COM lead on the 6-60V screw terminal + terminal
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- put the V lead on the 6-60V screw terminal - terminal
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- the multimeter should a fluctuation resistance above 100 kOhm
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Test the 5V power port for shorts:
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- use a multimeter in resistance mode
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- put the COM lead on the 5V screw terminal - terminal
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- put the V lead on the 5V screw terminal + terminal
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- the multimeter should read 1.8 kOhm
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- put the COM lead on the 5V screw terminal + terminal
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- put the V lead on the 5V screw terminal - terminal
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- the multimeter should an increasing resistance above 1 kOhm
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Test the 3.3V rail for shorts:
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- use a multimeter in resistance mode
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- put the COM lead on the I/O header 3V pin
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- put the V lead on the I/O header 0V pin
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- the multimeter should read 3-4 kOhm
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- put the COM lead on the I/O header 0V pin
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- put the V lead on the I/O header 3V pin
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- the multimeter should above 10 kOhm
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Test the 3.3V voltage regulator:
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- connect a power supply set to 5V and limited to 0.2 A on the 5V screw terminal
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- the rightmost green LED should be on
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- the board should draw around 0.1A
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- ensure 3.3V are present on the I/O header 3V/0V pins
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Test the USB power input:
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- plug a USB cable connected to a USB port supply on the USB-C port
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- the rightmost green LED should be on
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- the board should draw around 0.1A
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- ensure 3.3V are present on the I/O header 3V/0V pins
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Test the 5V voltage regulator:
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- connect a power supply set to 6V and limited to 0.3 A (must be more than 0.2 A) on the 6-60V screw terminal
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- the rightmost green and second rightmost yellow LEDs should be on
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- the board should draw around 0.1A
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- ensure 5.0A are present on the 5V screw terminal
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Test resettable 1.8A input fuse:
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- connect a power supply set to 7V and limited to 3A on the 6-60V screw terminal
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- the rightmost green and second rightmost yellow LEDs should be on
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- connect a 1 Ohm resistor across the 5V screw terminal
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- after 10 to 20 seconds, the green light should turn off while the yellow light remains
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- remove the resistor from the 5V screw terminal
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- after a second, the green light should turns back on
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