I've just finished a new 'pocket' transmitter, this one uses the same ABS case as a couple of previous 'handie-trannies'.
This is a lovely case, very solid and super quality but unfortunately number 3 is my last in this format as RS have upped the price to £18 !!!
https://uk.rs-online.com/web/p/instrument-cases/0583094 (I dont know why they call it 'flat pack' - it isnt!
Edit: Ron has found a slightly cheaper case: https://cpc.farnell.com/multicomp-pro/m ... dp/EN85635
About 12 years ago I'd done my first 1+1 using a PIC encoder and Frsky V8HT, sadly the details were lost with the closure of singlechannelersreunited.
Then 5 years ago I did the 'Pocket' Frsky 2+1 which uses a Promini and a Frsky DFT, this one has seen lots of use - even Mike & Jonathan have flown it from the car-park slope at Ivinghoe
viewtopic.php?f=27&t=650It lives permanently in my van with a twisty-wing Lidl Glider and a Ukulele
Well, following on from these earlier projects...
This latest transmitter is another 2+1 but uses the homebrew 'lockdown' NRF FHSS instead of a commercial PPM RF module.
Functionally its identical to the Frsky 2+1 with propo rudder & elevator, and sequential throttle via the button.
Almost all of my slope soarers are two-channel - elevon wings, aileron/elevator or rudder/elevator so the 2+1 is perfect,
bearing in mind that I dont do 'model memories' in the conventional transmitter sense, all my reversing & mixer
configurations etc for a particular model are stored in its individual receiver. This means I can fly any model with any
transmitter, S/C or propo, and the configuration is always right without changing or selecting anything - 'model memories' are redundant.
Heres the family photo, new one on the left, old PIC 1+1 in the middle and the 'van' Frsky 2+1 from 5 years ago.
(Banana for size reference
)...and with the rudder/elevator Lidl Glider (you cant have too many Impalas or Lidl gliders!):
...and in a pocket...
The stick unit is Futaba so its a nice 'full size' stick, yet you can fly comfortably with one hand whilst the other is keeping warm in your pocket - and since its symmetrical, you can swap and fly left-handed whilst you warm your right!
The circular 50mm hole for the stick unit was cut with the stationery compass used backwards as before (thanks again for the tip Neil!)
The NRF and Promini are mounted inside the rear cover whic connects to the front panel pots, switch, button & led via a 7-way connector
so the halves can be easily parted. Theres not an awful lot of room in there!
Power is the usual EBL lithium PP3 and the aerial is on a 90° SMA extension from Amazon: https://www.amazon.co.uk/dp/B0CJRFT5W1
The code is the old (very old!) 2+1 encoder with no rework at all other than the PPM output being replaced by the FHSS code, as such its very simple, minimalistic and familiar - but it does the job perfectly
Initially rudder & elevator were on "A1 and A2" because the original 2+1 was on a DigiSpark.
I've just moved them from "A1 and A2" to "A0 and A1" so they match the other encoders.
Functionally it makes no difference, its just more uniform across the projects
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