Cheapo cycle computers

[FD3Si]

Moon/Stick time.

I'm an avid MTBer but have bought a cheap road bike for training due to proximity to decent trails, and for workouts in the summer house.
Budget unfortunately doesn't run to a smart trainer, but a friend has leant me some rollers that I'm using the bike on when I can't get outside.

I'd quite like a cycle computer with cadence stuff to try and structure workouts properly on the rollers, and as a bonus it'd be handy to have out on the road I guess. Are the el cheapo chinese ones like this:
https://www.amazon.co.uk/Suaoki-Transmission-Speed...
actually any good? Or will it just die after seconds?

Budget is very tight, but my ideal list would be:
Cadence sensor
Speed sensor
Wireless would be nice
Ability to link up with Strava on Android phone would be handy (no idea if this is even doable?!)
As cheap as possible. I mean cheap, cheap, not 'considerable richer than you' cheap. £100 is not cheap. That's half the cost of a Tacx Flow...)

Any pointers appreciated - very new to all this, and the whole training lark in general. (Previously my training was 'just riding til I drop 5 nights a week', but location and fatherhood now prevent this)

[idiotgap]

I went as cheap as I could with this at the outset and used a £3.50 iirc aldi bargain bin wired computer to measure cadence. I used mounted the speed sensor on the crank and calculated the wheel diameter that would return cadence correctly. It worked for a good while and I used it primarily as a visual cue to try and keep my cadence high and it did help, I didn't worry about speed on the go and looked at strava when I got home for that. For strava recording, I just used my phone in my pocket. I didn't see much value in storing my cadence, HR and everything else against each ride so connection between the bike computer and phone wasn't needed.

Ultimately I got tired of the wiring and badly wanted some navigation so I could plan a route at home and follow it out on the road without stopping every five minutes to check my phone mapping only to find I was a mile in the wrong direction, so I bought a Garmin 520. It's been fine for my use apart from not having much memory for the maps, if it had been out then I would have bought an 820 - both well out of budget, but what I decided I needed.

Maybe you could look at a quadlock clone type thing to mount a phone on your bars and using it as the head unit, then attaching some bluetooth or ant+ sensors to it?
Assuming you have a smart phone, it does everything you want a bike computer to do really. Decathlon do a speed/cadence sensor for £14
http://www.decathlon.co.uk/bluetooth-speed-cadence...

[FD3Si]

Cheers I was looking at the Decathlon option earlier but the standalone was only a fraction more! Although I guess the Decathlon stuff would then talk straight to Strava?
I was thinking more along the lines of standalone to keep my phone out of harm's way, and I really don't want to splash out on nav stuff at the mo, I really won't be using the bike for that anyways

[Phunk]

I have this, been on my bike for 6 months, no issues.

https://www.amazon.co.uk/gp/product/B01HMGYFEG/ref...

[idiotgap]

FD3Si said:

Cheers I was looking at the Decathlon option earlier but the standalone was only a fraction more! Although I guess the Decathlon stuff would then talk straight to Strava?
I was thinking more along the lines of standalone to keep my phone out of harm's way, and I really don't want to splash out on nav stuff at the mo, I really won't be using the bike for that anyways

I'm with you on keeping the phone out of harms way, they aren't all weather proof, can get knocked about on the bars and the screens aren't all that good in daylight. The decathlon sensors should talk to strava on your phone, big bang for buck there, much more powerful option than a standalone, this side of a garmin or elemnt.