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Start and Stop Switch Failed Calibration ST-16 Controller

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Aug 23, 2018
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Recently the ST-16 start and stop switch simply failed to launch Typhoon H. Performed ST-16 calibration, all other switches on controller worked (indicated green) with the exception of B1. B1 showed "failed" (in red). I suspect this is the button for 'start and stop'? ST-16 firmware version: st16_system_v03.01.b30. Purchased vessel in March 2018. Do I have options?
 
Steal the Aux button and plug it into the start/stop port on the card. When you pop the red cover back on, it’s identical.

Have you ever opened the ST 16? It’s not that hard. Of the three components, the ST is the easiest to open and service the switches, fans, and antennas. The two halves need a little force to separate after all the screws are out. Be careful not to pull the fan wires or battery connection apart. They are what’s part of holding the back half from separating.

The battery connector will pass through the gap in the rear half by removing the rubber grommet. The fan connectors need to be disconnected from the main board. The nut holding the switch should never be cranked on by a wrench. The little red cover will pop off when you pull the collar off the switch threads after unscrewing.

Since the aux will never do anything, it’s a spare part that gets you repaired in these situations. You could opt for a warranty repair as well and go through the RA request. That’s a lengthy process and equals no work or fun with your Typhoon for weeks.

You can also order the button switch and go that route which still would be a self repair. That’s what I did with my OBS switch when it popped apart. The first generation of that switch was a skinny pole and now it’s a flat spade. Even though their website said warranty repair only on that switch, I was able to purchase one on the phone with a Yuneec tech. So consider a call or chat with them and go over your options.
 
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Sticks are most often problematic on the ST-16, but it's not often the buttons go wonky, and unlike sticks, cleaning and calibration probably won't fix it.

So I guess your options are:

1. You are in guarantee, so phone Yuneec and get an RMA number to send it back to them for fixing / replacement
2. Look for youtube videos on how to replace the switch yourself, or do what CC said, and nick the aux button !

What you definitely shouldn't do is just leave it. It is a bad idea to rely on RTH as your primary landing method, and it is very much not safe to fly a craft that you cannot turn off in case of emergency.
 
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Very pleased, and impressed on how fast you both (CraigCam & AeroJ) got to my cry for help. You guys are awesome, and I thank you both for the valuable information.
 
Also if you have an ohm meter, you may want to check if the toggle switch is working or not.
If it is then the issue could be elsewhere.
 
For sure the start stop button is set up yuneecly...on the Plus the motors self stop after 3 secs of idle or so. Once it’s down safe, it shuts down. Why the 480 needs that button is part of the confusion and hand catching fears. DJI users think you turn the ship sideways to stop motors and our ships fight that. So make sure it’s working 100% before flying again and more importantly, landing.
 
Steal the Aux button and plug it into the start/stop port on the card. When you pop the red cover back on, it’s identical.

Have you ever opened the ST 16? It’s not that hard. Of the three components, the ST is the easiest to open and service the switches, fans, and antennas. The two halves need a little force to separate after all the screws are out. Be careful not to pull the fan wires or battery connection apart. They are what’s part of holding the back half from separating.

The battery connector will pass through the gap in the rear half by removing the rubber grommet. The fan connectors need to be disconnected from the main board. The nut holding the switch should never be cranked on by a wrench. The little red cover will pop off when you pull the collar off the switch threads after unscrewing.

Since the aux will never do anything, it’s a spare part that gets you repaired in these situations. You could opt for a warranty repair as well and go through the RA request. That’s a lengthy process and equals no work or fun with your Typhoon for weeks.

You can also order the button switch and go that route which still would be a self repair. That’s what I did with my OBS switch when it popped apart. The first generation of that switch was a skinny pole and now it’s a flat spade. Even though their website said warranty repair only on that switch, I was able to purchase one on the phone with a Yuneec tech. So consider a call or chat with them and go over your options.
How is warranty coverage with Yuneec? Typhoon H owners should have one year coverage within guidelines. A failed start and stop switch should be covered wouldn't you say?
 
He’s under warranty and can go that route. Experience has taught many of us here that DIY keeps you flying better then the 2 month rma warranty routine.
 
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