New to SHP. Stumped & need some help. After 10 years I am jumping back into RC...
New to SHP. Stumped & need some help. After 10 years I am jumping back into RC Heli's. I last left off with a fully operational TRex 600 and a large drone. I purchased a Roban 700 AH-64 and have the mechanics ready & electronics installed. System - Spektrum ix14 trans & AR8000 Rec'vr, I bought the Motion RC recommended electronics, Castle 160 ESC @ BEC, 3 MKS DS1220 Servo's, 1 MKS HBL 980 and 2 Admiral 5000 mAh batteries. I hook up the esc and the motor operates as programmed. However, the servo's will not function at all. I programmed the Castle ESC to 6.6V & tried 7.6 volts, still nothing moves or makes a sound. I have tried an AR14400 Rec'vr as well with no different results.
Would appreciate some advice on how to get the servo's functioning.
Thanks A
6 Answers
To isolate the issue, I would power the receiver with a separate battery to see whether the receiver is bound properly and translating signals to your servos.
Thanks Michael. I disconnected the BEC & hooked a separate 2000 mAh, 7.4V 2S Lipo. No luck. That was my original set-up. When the servos did not function with the independent 7.4V pack, I went ahead and did the BEC. Logic was I needed more amperage. Appreciate the suggestion.
I’m grasping here but is the transmitter and recv on same band with eg. DSMX or DSM2?
Thanks for the response Charlie. It is DSMX. This morning I started a set up a new model to make sure it was not a programming issue with the prior model and insure the servos for the model were set to Digital 11 ms. In addition I checked the Rx Plug polarity to make sure the MKS servos were wired to a Spektrum Rx. I re-Binded the unit with no luck. The Throttle/ESC does function as it should. Still trying to figure out my servo issue. My next approach is to go to the local Hobby Store & buy a Spektrum servo to see if its a MKS servo compatibility issue with the Spektrum. Appreciate all the help gents. I will keep plugging away.
Solution - I purchased a Spektrum A6265 Digital Hi-Torque Servo today. I plugged it in and it works like it should. Now I need to figure out how to get the MKS Servos to work or buy new Spektrum Digital Servos. Appreciate everyone's help! Thanks A
Ah you might have hit on something most servos operate on 1520us frequency are the servos you have 760us ? They won’t work if so unless you tell the recv/ FBL unit so. Ask me how I learned that one lol.