FBL2360 Status LED output

4 years 6 months ago #29531870 by little1406
I would like to have an external status LED for my FBL2360 application because the controller is not easily visible. I have used the Roborun+ utility to define the function of DOUT4 to be "StatusLED" and saved that to the controller. But, when I monitor the voltage on pin 7 (DOUT4) I get nothing, yet the status LED on the controller is blinking nicely (3 short green pulses in my case to indicate analog command mode).

Am I misunderstanding the function of the StatusLED output?

BTW, I have tried defining DOUT4 to be Active High and Active Low. Both produce the same 0V when pin 7 is measured w.r.t GND (pin 1) but things are mysteriously different when pin 7 is measured w.r.t +5 (pin 25). With DOUT4 set to Active Low, pin 7 measured 5 volts below pin 25...i.e. at ground. But when DOUT4 is set to Active HIGH, pin 7 measures only about 3 volts below pin 25...! It's as if pin 7 is in a high impedance output state and not being driven at all by the controller...

Thanks for any assistance.

Scott Little
1406 Old Wagon Road
Austin TX 78746
512-328-4071

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4 years 6 months ago #29531872 by niko
Replied by niko on topic FBL2360 Status LED output
Scott,

The digital output is a switching ground. So you connect a LED and a resistance for examlpe between a 5Volt supply and DOUT. When DOUT is on the it is grounded and the LED is on. When DOUT is off it is floating, so the LED is off.

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4 years 6 months ago #29531873 by little1406
Sorry, I forgot to mention that I already tried that LED idea. I used a small LED and a 240 ohm R in series and connected it both from DOUT4 to GND and from +5 to DOUT4 and it never flashed. To test the LED+R combo (and to get the polarity right), I connected it from +5 to GND and it glowed steadily.

I'm away from the unit now and, unfortunately, I'm not 100% sure that I tried all these combinations both with DOUT4 set to Active High and to Active Low. Which of those settings should I use for a Status LED? Assuming I did try them all, then it looks to me like DOUT4 simply does not work for a StatusLED. Of course, all this is assuming that the StatusLED output mimics the behavior of the built-in status LED, which was showing three short green flashes all the while I was doing this testing. Could yall check it there on one of your FBL controllers please?

Thanks,

Scott

Scott Little
1406 Old Wagon Road
Austin TX 78746
512-328-4071

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4 years 6 months ago #29531879 by niko
Replied by niko on topic FBL2360 Status LED output
Hello Soctt,

there seems to be a bug in this feature. We are working on fixing it. Please send an e-mail to This email address is being protected from spambots. You need JavaScript enabled to view it. in order to send you a special firmware, when ready.

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