And the connector indeed can be the same GX12-5 because Pin 1 is not connected in the aixun T245 handle wiring. So then Pin 1 can be used for routing the stand idle detect wire.
This only applies to T245, not to T12 (and probably 936 as well), where the pin should be used. Do you have a T3A T12 handle to check?
if the person doing the mod wants to use a different handle than t245, firstly i would say dont do that. but secondly... well then you can instead just buy for similar price the 6 pin versions of these gx12-6 aviation connectors. and it will also fit perfectly on the rear panel of the main station base unit. on to the same existing hole to replace the existing +24v dc barrel jack mounting hole.
by doing that... then you cannot possibly confuse the new 6-pin extension cable going between the base station and the stand. because the handle will no longer be able to plug in. from 5 pins to 6. and then it also permits the 1 extra wire you might need. for the stand idle detect. (assuming the stand for other handle types will be capable support that feature).
the more important difference however.... is that then you cannot order the 0.3mm^2 sq (aka 22awg probably) 4-cores silicone cable. as per the spec given in my previous comment today. because only 4 wires is required for the t245 handle. as it has only 3 wires (+ add 1 extra to carry the stand idle detect signal to the stand). when other handles will need more wires. either 5 or 6.
so another handle needs more wires in the cable. then those wires will have to be thinner to keep the same overall outer diameter and fit the 5.8mm diameter hole. where we pass the whole sheath in through the hole of the metal casing of these gx12 aviation connector.
actually you can maybe use a bit thicker diameter by cutting the sheathing outer insulation short. and not pass it thru the hole (only bare wires). because the metal clamp with the 2 screwa and the gripping ridges. it clamps on just before the hole. but i just did not want to do that. for the sake of a better more durable cable. that is more secure not to pop out and become compromised. at that wear failure point of the strain relief. so ymmv
so anyhow. any for situation you can fit the 6 pins version connectors to the back of the base and stand (if you wish). also for using these t245 handle too. independant of how many cores must be the cable (either 4, 5, or 6?). however then wit a different number of pins. it is no longer going to be possible to optionally directly connect the handle cable to the back (bypassing the stand). which might be useful, for example: for mobile appications. or for unforseen situation where you forgot the stand. or lost the standd. or broke the stand. (or broke the cable to the stand). etc. etc.
so for any sensible person (to be smart enough to see the reasons, and get the t245t handle to begin with). for those who knows well enout for not to insist to get any other inferior performiance type handles... which is the entire point of this aixun t3a station to begin with. then there is no point to the 6-pin connector here... at all. just don't do it. and loose the compatibility to t12. its not worth the bother to keep compatible.
however if you do fit the 6-pin (for other handles compatibilirt). than can potentially also retro fit the t245 handle's cable with also a matching 6 pin. then it could indeed connect directly on to the back panel of the base unit. but then only the back (not both front and back). or instead you can keep the 5 pin of the front only. and 6 pin on the back. just you cannot upgrade the front to 6 pins (it cannot be because it fixes directly onto the controller pcb).
so there are indeed a variety of options it can be done. and that is all probably far too confusing for most people reading this explanation. then just order both types. get 3x gx12-5 and also 2-3 of the gx12-6. to decide later on during final assembly time. when you actually do the mod(s). however you are on your own with the extension cable specs. which needs to be right, because if the wires are too thin, those are carrying a substantial current and the cable length is being extended further. so try not to under spec the conductors thickness. (for more than 4 cores)
it probably would help too make pictures with labels. to show better all of those possible different alternative configurations. however i just don't see the point to recommend any of them. just use t245 aixun blue handle only. with 5 pin everywhere. and the 4 cores silicone wire between the base and the stand. for happy days / simple life. (and for the most flexible connectivity, and highest performance). why make things harder for yourself to create a worse solution. it does not seem worth it
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