HERMAN BIX wrote:Will need a tutorial on that jumper in cn6 please mate, I have a similar task to put one in a StuG
Somehow, I forgot to check the archives for discussions on the TK 6.0 series connection issues, before launching into 6.1s territory.
There's some useful stuff there.
Anyway, I'd figured that all I had to do to get the new HL recoil unit working would be to connect the servo cable up to the servo recoil terminal CN7 on the 6.1s (same on 6.1) MFU. Without instructions, it seemed the logical place for the two-pin JST from the microswitch fitted to the unit would be the CH6 connector, as a microswitch is shown as integral to it on the circuit diagram. That's where the microswitch from an Airsoft gun would go. Well, I tried it and got a big...nothing. Seemingly dead as a dodo.
So I tested the recoil unit's servo, with the 'manual' option on the tester:
Gun in battery
Gun recoiled and hitting microswitch
I found the recoil unit to be in tip-top condition, and ditto with the microswitch on which I'd used a continuity tester (make/break)
Then I began to think that maybe the internal circuitry in the MFU was incomplete without the 'Launch Flashing Light' LED (LED 1) and Emitter bulb (CN15) connected up. In old airsoft circuits, they were often linked in series. Knock one out, and they all went.
Then watching Stanlley legions videos on giving the TK 6.0 series the 'smoking barrel' feature, I noticed that he used a jumper on the CN6 terminal. (Stanlley's videos are so useful, I'll away him an extra couple of 'L's in his first name: Bravo Stanlllley!
). All I did was to take a stock two-pin JST (Red/Black), cut and joined the wires, soldered them, and put a shrink insulator on them. With the jumper on CN 6 ( I suppose a two-pin servo binder, often supplied with a new TX/RX combo would also work, probably.)
everything suddenly worked. So, apart from the jumper, I'd left the two-pin microswitch (from the recoil unit) disconnected, but had plugged the emitter in. I figure the emitter is in series with the recoil. The two-pin from the recoil microswitch is, as I discovered, intended to connect to the four-way terminal block supplied with the barrel smoking unit. Thus, the recoil unit microswitch triggers the
smoke, and
not the recoil. Timings for the
recoil itself are obviously managed internally via firmware. Hope that helps.
In essence, to get the new alloy recoil unit to work on the 6.1 and 6.1s, you: connect the recoil's servo unit to CN7; put a two-pin jumper lead on CN6 and the emitter unit/LED to CN15 (for all I know, the recoil might still work without the emitter connected, but I've not tested it). A further observation: the complete set of wires supplied with the TK 6.0 series, doesn't include a suitable Infrared Receiver cable and terminal for the 6.1 and 6.1s. The ones supplied have three-pin JSTs on them, designed to fit the Tk6.0 amd TK60s. They won't fit the 6.1 and 6.1s as these need three-pin servo connectors, and JSTs are just too large to fit onto the terminals. If you're planning to fit the receiver, you'll have to graft a three-pin servo onto the receiver cable.
First, I think, you should dip into that monumental Aladdin's Cave of Sherman parts you've amassed, and assemble yourself a nice Firefly!. I'm very glad I finally got around to building mine, after procrastinating over it for almost five years 
I even have a Firefly barrel somewhere you could use. 
