Yet another Digimac 1+1
Posted: 08 Nov 2022, 10:52
I came across this site and singlechannel.co.uk thanks to the article in the June 2022 RCME and a chance comment from another club member that old R/C gear 'might be wanted by some for conversion'... Having built an RCME FM Mk III, and a few other electronic projects, a long long time ago I thought 'maybe...I could try that'.
My first R/C set was a Digimac 1+1 back in 1974, duly retrieved from its slumber and armed with Phil_G's encoder and a LemonRx Tx module for my Spektrum Rx's I set to work. Two little holes in top at front are for the Tx module LED's, I found a genuine 1970's spring-loaded 'slide to make' switch to match the on/off for bind which is on the top. Another club member kindly 3D printed a mounting for the Tx module.
Not having a suitable 'plane, I built a 'Poppet' and had to wait a while before a beautiful calm day dawned in October. Poppet flies very well, can't believe I learnt to fly with the 1+1 in a KK Outlaw. The Hepcat I built a few years back and tried to fly it proportional, I scaled back the initial motor fitted and increased the rudder slightly so it's passably controllable for ROG. Then I was 'gifted' a Skyleader set by a member doing a final workshop clearance. Filled with confidence, armed with a USBASP programmer and a DIYMore board I downloaded Phil_G's 7Ch encoder and set to work. Using the pre-punched holes for some of the knobs and switches perhaps wasn't the best choice, but the Skyleader is now converted and fitted with the S/C controls. Bound to the Hepcat the 'compound' S/C - with suitable rates to manage the enlarged rudder - now commands her in flight as intended...
There are a few other projects I've downloaded and are underway.
It's good to see this side of the hobby hasn't vanished with the advent of 2.4GHz, thank you to all who've made the sketches etc available!
My first R/C set was a Digimac 1+1 back in 1974, duly retrieved from its slumber and armed with Phil_G's encoder and a LemonRx Tx module for my Spektrum Rx's I set to work. Two little holes in top at front are for the Tx module LED's, I found a genuine 1970's spring-loaded 'slide to make' switch to match the on/off for bind which is on the top. Another club member kindly 3D printed a mounting for the Tx module.
Not having a suitable 'plane, I built a 'Poppet' and had to wait a while before a beautiful calm day dawned in October. Poppet flies very well, can't believe I learnt to fly with the 1+1 in a KK Outlaw. The Hepcat I built a few years back and tried to fly it proportional, I scaled back the initial motor fitted and increased the rudder slightly so it's passably controllable for ROG. Then I was 'gifted' a Skyleader set by a member doing a final workshop clearance. Filled with confidence, armed with a USBASP programmer and a DIYMore board I downloaded Phil_G's 7Ch encoder and set to work. Using the pre-punched holes for some of the knobs and switches perhaps wasn't the best choice, but the Skyleader is now converted and fitted with the S/C controls. Bound to the Hepcat the 'compound' S/C - with suitable rates to manage the enlarged rudder - now commands her in flight as intended...
There are a few other projects I've downloaded and are underway.
It's good to see this side of the hobby hasn't vanished with the advent of 2.4GHz, thank you to all who've made the sketches etc available!