DigiSpark 3-channel propo encoder with single-channel, V mix, + inactivity alarm

Single to Multi propo
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Phil_G
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DigiSpark 3-channel propo encoder with single-channel, V mix, + inactivity alarm

Post by Phil_G » 04 Jul 2019, 23:54

I've just done a 3-channel EK Logictrol with a DigiSpark, see photo, it has a a Flysky RM002 RF module and like the 4ch sketch its based on, it has all the usual reversing, V-tail or elevon mixer, S/C emulation, soft throttle lock, inactivity warning (with servo waggling in case you left the rx on too) etc but doesnt use P5 so doesnt need the fuse programmer, making it an easier DIY build.
It uses a lithium battery made from two LIDL 18650 "drill battery" cells.
Like all of my builds, the inside isnt at all tidy - because the pot tags look very delicate, I used all the original cabling rather than risk disturbing the pots. Note the dangling S/C button with the buzzer mounted on it.
Not sure whether to drill an extra hole for S/C or not, I think I'll probably leave it hidden inside.
The DigiSpark encoder is the tiny white blob and the Futaba-style Flysky module is mounted side-on to the camera, the RM002 has a fixed aerial so the whole thing just pokes up through an enlarged aerial hole - its probably the easiest module of all to install!
Cheers
Phil


IMG_20190704_233515.jpg

IMG_20190704_235836.jpg

digispark_3ch_encoder_v2.jpg


I was trying to remember where the Logictrol came from, its been on the shelf awaiting conversion for a few years. I think I recall Shaun being given a pile of various Logictrols to share out, and I chose the 3ch as it was a bit different. Unfortunately I dont remember who donated them, sorry! but thank you whoever it was!

The Flysky module works with the F949R 'indoor bricks' and I have a stash of 3mm depron, so I might make an 'indoorneezer' for it :D I've never been to an indoor meeting, never flown indoors...

Cheers
Phil
Attachments
digispark_3ch_propo_sc_v2.pdf
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digispark_3ch_propo_sc_elevonmix_buz.ino
(6.83 KiB) Downloaded 22 times

NeilMac
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Joined: 04 Feb 2019, 22:07
Location: Nth Somerset

Re: DigiSpark 3-channel propo encoder with single-channel, V mix, + inactivity alarm

Post by NeilMac » 05 Jul 2019, 06:33

These DigiSpark setups are brilliant and make the whole job of fitting all the gubbins in the tin so much easier.

Hoping to get an opportunity to try the 4 channel version out soon. ;)

Neil
"I'm your huckleberry, that's just my game"

pulserudder
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Joined: 21 Feb 2018, 02:01
Location: North Carolina

Re: DigiSpark 3-channel propo encoder with single-channel, V mix, + inactivity alarm

Post by pulserudder » 05 Jul 2019, 19:40

Love seeing this old transmitter given a new life. Very nice job.

pulserudder
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Joined: 21 Feb 2018, 02:01
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Re: DigiSpark 3-channel propo encoder with single-channel, V mix, + inactivity alarm

Post by pulserudder » 05 Jul 2019, 23:59

Flying indoors is fine, except for all the walls and ceilings. :shock:

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drigotti
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Location: Ohio USA

Re: DigiSpark 3-channel propo encoder with single-channel, V mix, + inactivity alarm

Post by drigotti » 11 Aug 2019, 18:11

Is the 3 channel version available preprogrammed for the Corona DSSS system?

If so, how much including shipping to 44026 USA?
Dave Rigotti

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Phil_G
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Re: DigiSpark 3-channel propo encoder with single-channel, V mix, + inactivity alarm

Post by Phil_G » 11 Aug 2019, 21:10

Hi Dave, the old Corona DSSS is a very dated now but it needs nothing special, any of the encoders will drive it.
I would suggest taking the PPM via a 1k resistor as a precaution, as early Coronas had no PPM level protection, much like the Frsky V8. Other than that it will be fine. There is no bootloader, so theres none of the servo-stripping problems that Coronas are are prone to in the absence of PPM.
I do the DigiSpark encoders fully defluffed, programmed, fully wired & heatshrunk with flyleads for all the connections, with a buzzer, all tested & delivered for £15.
Drop me an email if you're interested Dave Image
Cheers
Phil

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