HM | DCC

Since fitting the sound chip the loco runs badly stopping all the time even with the stay alive addition the loco runs fine with a standard Dcc decoder.

I use HMlDCC with an iPad Pro Gen 1 and it is my favorite app on there. Works a dream and new sound profiles and functions are being added all the time. 10/10

Lots of good features that take a bit of time to learn and understand. The track builder element needs updating to include the new TT120 scale and part numbers.

I have been using this for a long while now. Have had no problems whatsoever.

Works perfectly for me. I have eighteen loco’s on the system- all running from my iPhone 15. Great piece of kit.

Don’t work

Works then doesn’t work , links trains ok then doesn’t even see them . Reset this and reset that etc etc . Now saying a device (train) can be reset with a passcode ?? Whatever that is . Press this to get help and nothing happens . Had it all set up ok . Went back the next day and it didn’t have a clue . No trains no nothing . Sorry but anything that works intermittently isn’t worth bothering with especially as there is so much really good stuff out there . So disappointing .

All of a sudden the app keeps logging out and resetting loosing all the engine details. This means you have to reset all chips and start again very frustrating

Having started in TT120, this new system came along soon after and really suits my modelling needs. It’s really intuitive to operate from phone/tablet screen and removes the need to know lots of arcane information that standard DCC systems use. It was a steep learning curve in the early days but that is much less now that pre-fitted models are available and early issues with the sound profiles have been dealt with. I would implore anyone starting out to download and read the full manual before starting as it provides lots of information that helps prevent basic errors. With the delay to the smaller 6-pin decoders, I invested in the legacy dongle which allows standard DCC decoders to be used on the app. More improvements are apparently on the way, including accessory control.

Although the app states it will work with various iOS revisions some versions on some devices are still in work as prominently stated by Hornby on their web pages. All in all the app is intuitive and simple to use. For those who are unable to master on screen prompts there are a complete series of step by step how-to guides also on the Hornby web site. In the event even that help is insufficient the Hornby forum has a separate section for HM DCC. Much more stable at v1.1.0 after update. Sound profile loading is now almost idiot proof.