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DIY FrSky Horus X10(s) Car and Field Charger

THIS BLOG ENTRY IS UNDER CONSTRUCTION AND PROBABLY FINISHED BY NOV/2018.

For those who don’t want to read through the below, here is the short version: Connect a 12V cigarette lighter adapter to one and a barrel plug to the other side of a step up converter and your car charger is done. For those who like more details, read on…

This is the end product:

The X10s comes with a wall charger and a 2S 7.2V 2600mAh Li-ion Battery. If the battery is not fully charged, the transmitter (TX) might not get through an entire day of flying. So here is a way to charge it through a 12V cigarette lighter adapter or – if you go one small step further – through a 2s or 3s LiPo battery as well.

I chose to go this way as I wanted to find a solution without invasive mods like opening the TX, soldering, changing battery chemistry and so on. I foresee to need a car charger only when on soaring holidays or for occasions when I have forgotten to charge at home. For most days, a charged TX battery will be just good enough.

Side note: The FrSky “Wall Charger” is not a charger with all the charging intelligence and algorithms behind it but only a AC-DC converter, providing  a constant 15V 1A output. The charging intelligence is attached to the Li-ion battery inside the TX and it decides how much charging power is coming through and when to stop. In other words, all we need to do is to put together a device which provides 1A at 15V.

The main component is a so-called step up volt converter which is sold on Ebay for a few bucks. There are many models, some with a LED volt display. The one I bought is simple, cheap and small:

The step up converter I chose busts up voltages from a 3-24V input to 5-28V output and can provide 2A. It is important to note, that it can only bust up the voltage and not reduce it. So if we need a 15V output to charge the X10(s), we need to have an input between 3V and 15V not to cause any damage. In my case I will use a 3S LiPo or the car battery as a power supply, both provide about 12V.

Components used:

  • 1 Step up volt converter
  • 1 Car lighter adapter
  • 1 Barrel plug: 1.7mm inside, 4mm outside, plugs into the X10s
  • cable, shrink tubing and a couple of plugs if you want use the charger with a LiPo as a field charger.

Optional: Instead of using a new barrel plug, you can cut off the one at the standard wall charger and connect it back using a plug (e.g. XT60, but almost anything will do). That plug would then also be used to connect the step up volt converter.

Read the captions of the pictures for step by step instructions.

 

 

 


I would like to thank James Mills and Colan Casey who helped through FB. 

Val da Camp and Lagh da Saoseo

Sfazù (1622m) – Rifugio Saoseo – Camp – Lagh da Val Viola (2159m) – Val Viola (2258m) – Lagh da Saoseo (2028m) – Terzana – Sfazù (1622m)

Length: 15km / Ascent & descent: 773m / walking time: 5 hours

Arrived at Sfazù (1622m), today’s trailhead, by bus from Pontresina. The scenery to get there was already impressive. We passed by the glacier and went through the isolated, lonesome area of the very eastern corner of Switzerland.

Sfazu

Mini-buses run to Camp Alp but it was booked out so I walked this one-hour stretch. The sunny weather lured many hikers in the same direction.

Soon two Swiss women joined me. We started talking while walking and I found out that one of the women from St. Gallen has a 28-year-old godchild who is a big Japan fan and lives in Nagasaki for 3 years!

In our last three hikes my hiking buddy Rieko-san and I met Swiss hikers whose adult children love Japan and learn Japanese. It is an amazing coincidence and I am happy to know that there are so many Japan fans in Switzerland!

After passing by Rifugio Saoseo, relatively easily I arrived at the beautiful green lake, Lagh da Val Viola. A great place for picnic lunch and I lazed around for one hour at the lakeside.

Today, the Val da Viola circles around the lake in a very autumn colors atmosphere. From the highest point of today’s trail (2258m) I see the snow-capped Piz Palù (but not Piz Bernina!) and the Morteratsch Glacier.  The main purpose of this hike was to see the Lake Saoseo, but this part of the trail on this valley was another highlight!

After a quite steep and slippery descent, the famous Lagh da Saoseo appeared. I saw a breath-taking photo of this lake two years ago and since then wanted to see it with my own eyes. Apparently, Saoseo is considered to be one of the most beautiful lakes in Graubünden. Painfully cold it was as well, when I put my feet in!

Hanging out a long time here enjoying the sun, I left the lake and headed down another route to Sfazu. This route along the stream was beautiful, with small bridges and some isolated typical stone farm houses.

As I stayed too long at the lakeside, I just made it to the bus five minutes before it arrived!

The trail details:
https://wegwandern.ch/listing/sfazu-rif-saoseo-lagh-da-saoseo-sfazu/

Martinsloch & Segnespass

Tschinglen (Elm), 1394 m – Segnespass 2625 m – Naraus (Flims) , 1838m
1200m ascent / 800m descent
Total hiking time: 6 hours (excluding lunch & snack breaks)
Total km: 12km – Average speed: Very, very low…

A physically strenuous but spectacular hike over the famous Segnespass between Elm and Flims. The highlight is the gigantic rock window Martin’s Hole (22m x 19m) up close, created by two rock layers pushed above one another.  Pure power of nature!

More on this hike route:
https://wegwandern.ch/listing/6-etappe-sardona-welterbe-weg-elm-martinsloch-segnespass-flims-wanderung-wandern/

Edelweissweg & Wisshornweg (Trift)

Zermatt (1620m) – Alterhaupt Edelweiss (1961m) –  Trift (2337m) – Schweifinen (2503m) – Zermatt
900m ascent / 900m descent
13 km / 6 hrs

After going through beautiful houses with balcony full of cheerful flowers in the east side of Zermatt, we found a path, leading steep uphill to the restaurant Alterhaupt Edelweiss. It perches on the rock above Zermatt, its white building visible from anywhere.

After a refreshing home-made ice tea, the path follows the narrow gorge and its serene stream. Here, there is no gondola nor mountain trains, nothing but quiet nature. That is not so easy to find in an area as developed as Zermatt.

The higher we go, the valley opens up and we see several impressive peaks and glaciers.

After some serious uphill, we arrived at the pink Trift Mountain Hut. I realised that I had been here more than 10 years ago.

We hang out in the wide basin near the hut for a long time, basking ourselves in the warm sun, having our delicious self-made sandwiches (away from the crowded mountain hut restaurant), taking many photos, listening to the hut owner playing the alphorn.

We changed our original plan which was to head back down the same way we came up and continued up a bit to walk a loop.

Above at Schweifinen (2503m), we have a phenomenal view of the entire east valley: Matterhorn, Klein Matterhorn, Riffelberg, all the way down to Winkelmatten where we stay. I was very happy that Philippe suggested this little scenic detour.

From there the path was steeeep downhill!  With Zermatt visible 900m below, we started that long zig-zagging down the mountain. While descending the narrow path I slipped on a tree root and got a mountain gift in form of a blue ankle for weeks…

We were relieved to be back in town to put our feet up…

Tomasee / Lake Toma

Oberalpsee (2046m) <-> Tomasee (2343m),
8km – 468m ascent &descent

A hike with Rieko-san to the Lake Toma.

Lake Toma is the source of the river Rhine, Its water travels 1’320 km through the German Rhineland and the Netherlands into the North Sea. An amazing thing to imagine!

For the first time, I hiked in the Disentis-Andermatt area. There is still so much to discover in my homeland Switzerland 😃

The Dolomites Day 4: Tre Cime & Lake Misurina

Tre Cime round hike and down to Lake Misurina

Today for the second time I visited Tre Cime!  Two days ago I could do only half of the Tre Cime tour because I had to go down to the valley which lies 1000m below.

When I arrived at the Auronzo Hütte (2330m) under the cloudy sky, it had a completely different atmosphere from two days ago. Today the air was cold, the heavy ominous clouds were hanging over the peaks of Drei Zinnen. The good side of the story was that only a few tourists and hikers were around!

After sipping a hot chocolate in the quiet hütte restaurant, I was happy to look outside and admire the majestic peaks, despite the heavy clouds.

Fuelled by the warm drink, I braved into a cold air and started walking. The south side of Tre Cime stands over the path and it is impressive!

The Dolomites Day 3: Burgstall

Kreuzbergpass 1636m  -> Burgstall 2161m -> Fischleinbodenhütte 1454m -> Moos 1339m
500m up, 800m down

3nd day in the Dolomites. Another great walk around the imposing Sextner Rotwand (2936m).

The Dolomites Day 2: Drei Zinnen and Fischleinbodenhütte

Rif Auronzo 2320m -> Lavaredohütte (2344m) ->DreiZinnenhütte 2405m -> Talchlusshütte (1548m) -> Fischleinbodenhütte 1454m
200m ascent; 950m descent

I was walking in a heaven today : )  Too many majestic peaks in every direction and I did not know which way to look at….

The Dolomites Day 1: Lago di Braies

Lago di Braies (1494m) – Forela Sora Forno (2388m) – Rifugio Biella (2327m) – Grünwaldalm (1590m) – Lago di Braies (1494m)
17km (estimated), 1100m up and down

The Dolomites wich I have long dreamed of!

Today’s plan was to walk the first part of the famous Alta Via 1 (a 120km long-distance hiking route) and take the route 23 & 19 back to the lake. The Alta Via 1 hike is on my wish-list for a while so it will give me some ideas for this route for the future.

At the trailhead we were welcomed by the amazing green color of the lake, Lago di Braies,  surrounded by impressive peaks! Being on the Alta Via 1,  I was already all smiles : ))

After going around one side of the lake, a very steep climb started. Several people were going up and one Italian was coming up steadily but with lots of efforts.  He was doing the Alta Via carrying a 22 kg bag including a tent and all you need for sleeping outdoors! No wonder he was sweating.

We were happy to reach the top at 2300m and had our well-deserved picnic lunch “on the rocks” with a fantastic 360-degree view.

From the Rifugio Biella the flat path started but it did not last long. With small up and downs we walked around the impressive mountain Sas dla Porta / Seekofel at the level of 2300m.  And then, inevitable, after the ascent, the decent. It was a path of scree. We had to concentrate not to slip. It is almost like snowshoeing on powder snow. But more tiring….

Happy to finish this exhausting downhill and back to the lake, we replenished our batteries with a cup of tea and a cold beer at the Grand Lakeside Hotel terrace…

Eataly 🇮🇹

This trip unexpectedly turned into a fantastic food adventure. The best I can remember (outside Japan, that is). Ohhh… these black smoked gnocchi with truffel and asparagus were to die for and the gnocco fritto a surprising start into a  great meal.