DiyLightAnimation
Hardware => Lynx Express => Topic started by: sydkahn on November 15, 2009,
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in the manual it says to test without chips - did that - two lit leds
Installed all the chips - double checked that all the legs were in the sockets and not bent under - plugged it in again - two lit leds - manual says that it should just sit there and do nothing - i was happy - did nothing and no magic smoke.
Reading along in the manual it says on page 16/27 of my printout ""... fire up the express and wait for the start up message to complete..."
the numeric displays are blank - when i pressed the first time on the mode button it blinked #16 led. after that - nada - it has no effect that i can discern.
* do you have to have the dongle connected to see the display (mines not built yet)
i am stopping the build for now just in case i have fried the MCU or something.... I have a v3 kit bye the way...
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never-mind - brightened up all the solder connections - and seems that was one i missed :o- now it has a little scrolling display - sorry to bother....
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The LED display should not react the same whether there is a dongle connected or not.
The #16 LED should blink with the 1s decimal point .
Make sure that the PIC is completely seated.
Make sure that the LED driver is completely seated.
Make sure that the 7 segment LEDs are completely seated.
Double check your solder joints again. <-- this is most likely your problem
If that does not work, post pictures of the front and back of the board to help us diagnose the problem.
update: oops, too slow.
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No problem that is what the forum is for. I am glad you found the problem and it was nothing but the missed solder joint. Thats an easy one to fix.
RJ