Hi guys,
just landed here, my first post.
I've just assembled the HM using raspberry 3b+ with adapt-a-damper.
Everything seems ok except the servo SG90
I connect it with RJ45 cable cat 5E, with a following B schema so:
pin 3 (white-green) -> servo pwr 5v (red on SG90)
pin 4 (blue) -> gnd (brown on SG90 - black on fan)
pin 5 (blue-white) -> fan pwr 12v (red on fan)
pin 6 (green) -> servo signal (yellow on SG90)
I've tested with manual setting moving from 0% to 100% with all default settings in config GUI (1000us to 2000us) fully open at 100%; fan works perfectly. Servo seems dead.
To test better I've cut the other plug to test contacts and connected all with a breadboard.
If i touch with fingers the contact of yellow cable (keeping 5v and gnd connected) on SG90 it moves randomly.
I've checked with another SG90 and I have same behavior.
With a tester with servo disconnected I have both, on board and on the other size of eth cable, these values
4,96v on 5v-gnd
4,96v on signal-gnd
If I connect the Servo I have:
4,96v on 5v-gnd
4,63v on signal-gnd
Strange thing is that few days ago, connecting fan and servo through the breadboard it worked for a while ONLY ONCE!!!
Moving from 0% to 100% in manual mode fan increase and decrease speed and servo moves back an forth.
Then I disconnected to mount it to the Adapt-a-damper and got dead again.
After days of failed tests I read in other posts today here that some solved similar issues adding a capacitor of 47uf... I have not that here, but I tried with 100uf...Strange again...It worked only once another time then dead again!
Current status is: fan always ok, temperature detection perfect, network perfect, display perfect...I've got only that issue about the servo.
Another bit: even the two times it worked even when not moving it makes a noise like a crackle, like it tries to move but can't for some reason... (both SG90)
I also tested with a simple back and forth program on Arduino and both servo were working perfectly (no noise in that case)
I have no idea what else I could check.
Any help would be appreciated
I can provide any other info
Thanks in advance
Leonardo
just landed here, my first post.
I've just assembled the HM using raspberry 3b+ with adapt-a-damper.
Everything seems ok except the servo SG90
I connect it with RJ45 cable cat 5E, with a following B schema so:
pin 3 (white-green) -> servo pwr 5v (red on SG90)
pin 4 (blue) -> gnd (brown on SG90 - black on fan)
pin 5 (blue-white) -> fan pwr 12v (red on fan)
pin 6 (green) -> servo signal (yellow on SG90)
I've tested with manual setting moving from 0% to 100% with all default settings in config GUI (1000us to 2000us) fully open at 100%; fan works perfectly. Servo seems dead.
To test better I've cut the other plug to test contacts and connected all with a breadboard.
If i touch with fingers the contact of yellow cable (keeping 5v and gnd connected) on SG90 it moves randomly.
I've checked with another SG90 and I have same behavior.
With a tester with servo disconnected I have both, on board and on the other size of eth cable, these values
4,96v on 5v-gnd
4,96v on signal-gnd
If I connect the Servo I have:
4,96v on 5v-gnd
4,63v on signal-gnd
Strange thing is that few days ago, connecting fan and servo through the breadboard it worked for a while ONLY ONCE!!!
Moving from 0% to 100% in manual mode fan increase and decrease speed and servo moves back an forth.
Then I disconnected to mount it to the Adapt-a-damper and got dead again.
After days of failed tests I read in other posts today here that some solved similar issues adding a capacitor of 47uf... I have not that here, but I tried with 100uf...Strange again...It worked only once another time then dead again!
Current status is: fan always ok, temperature detection perfect, network perfect, display perfect...I've got only that issue about the servo.
Another bit: even the two times it worked even when not moving it makes a noise like a crackle, like it tries to move but can't for some reason... (both SG90)
I also tested with a simple back and forth program on Arduino and both servo were working perfectly (no noise in that case)
I have no idea what else I could check.
Any help would be appreciated
I can provide any other info
Thanks in advance
Leonardo