# A cry for help - (DIY) roller blind/shade **URL:** \ **Category:** Questions & Help\ **Created:** [April 26, 2021, 1:36pm UTC](https://community.homey.app/t/a-cry-for-help-diy-roller-blind-shade/46743 "2021-04-26T13:36:04Z")\ **Posts on this page:** 11\ **Page:** 2
**Author:** ![KvM](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/kvm/32/6707_2.png) [@KvM](https://community.homey.app/u/KvM)\ **Post date:** [May 6, 2021, 12:05pm UTC](https://community.homey.app/t/a-cry-for-help-diy-roller-blind-shade/46743/21 "2021-05-06T12:05:29Z")
Does anybody know what the maximum size of roller blind would be to work with this motion blinds motor? Or can somebody just confirm it will work with a 2.30m width, 1.70m long blind? Looks very promising this setup šŸ™‚ ---
**Author:** ![Edwin\_D](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/edwin_d/32/136417_2.png) [@Edwin\_D](https://community.homey.app/u/Edwin_D)\ **Post date:** [May 6, 2021, 12:34pm UTC](https://community.homey.app/t/a-cry-for-help-diy-roller-blind-shade/46743/22 "2021-05-06T12:34:50Z")
The manual does not state any limits. longest i have is 2.20m, about 1.60 high, no problem whatsoever. 2.30 together with the 1.70 I think it should manage just fine. The biggest consideration is that longer blinds usually have wider tubes. Thereā€™s a replaceable cap that should fit snugly in the tube with enough friction so it will drive the tube. There are two versions provided in the box, one that fits 25mm tubes with ridges inside and a rubber one that is more versatile. I do not know if other sizes are on offer. Robbshop says on their website they may even help with different sizes using a 3D printer. I cheated with the bigger blind by placing strong linnen tape over the rubber one, tight enough so it wonā€™t slip, but that may not last forever of course. But the rubber ensures the tight fit well up to now. I think with the rubber it might even be better than a 3d printed one. ---
**Author:** ![KvM](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/kvm/32/6707_2.png) [@KvM](https://community.homey.app/u/KvM)\ **Post date:** [May 6, 2021, 12:48pm UTC](https://community.homey.app/t/a-cry-for-help-diy-roller-blind-shade/46743/23 "2021-05-06T12:48:33Z")
Thanks for the extensive reply Edwin. This gives me good faith to try a set šŸ˜ƒ The tube I have is 28mm inside, so I think that will be fine. That was my whole issue when trying other motors (somfy amongst others) they donā€™t fit as the tube was too narrow. I will remember the tape trick if needed, and when everything works fine, I can always 3D print another connector when needed. ---
**Author:** ![KvM](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/kvm/32/6707_2.png) [@KvM](https://community.homey.app/u/KvM)\ **Post date:** [May 6, 2021, 12:56pm UTC](https://community.homey.app/t/a-cry-for-help-diy-roller-blind-shade/46743/24 "2021-05-06T12:56:45Z")
One more question (for now šŸ˜› ), This bridge has an USB port. Does it mean I need to connect it to a USB charger in a 230V power outlet? Or does it just a separate adapter and is the USB only to connect to a computer (for firmware flashing or something)? ---
**Author:** ![Edwin\_D](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/edwin_d/32/136417_2.png) [@Edwin\_D](https://community.homey.app/u/Edwin_D)\ **Post date:** [May 6, 2021, 1:00pm UTC](https://community.homey.app/t/a-cry-for-help-diy-roller-blind-shade/46743/25 "2021-05-06T13:00:49Z")
No, itā€™s just for power, firmware is checked through the app so Iā€™m assuming the app can upload that if needed. But anyhow, for normal day to day use you donā€™t need to have a computer, nas or raspberry or anything running. Itā€™s just usb powered. Any adapter lying around will do. ---
**Author:** ![KvM](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/kvm/32/6707_2.png) [@KvM](https://community.homey.app/u/KvM)\ **Post date:** [May 6, 2021, 1:03pm UTC](https://community.homey.app/t/a-cry-for-help-diy-roller-blind-shade/46743/26 "2021-05-06T13:03:14Z")
Perfect, I will have some adapters lying around. Motor and bridge and remote are ordered, project for the weekend to make it work šŸ˜ƒ ---
**Author:** ![Edwin\_D](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/edwin_d/32/136417_2.png) [@Edwin\_D](https://community.homey.app/u/Edwin_D)\ **Post date:** [May 6, 2021, 1:06pm UTC](https://community.homey.app/t/a-cry-for-help-diy-roller-blind-shade/46743/27 "2021-05-06T13:06:32Z")
Donā€™t hesitate to ask if you need help. ---
**Author:** ![KvM](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/kvm/32/6707_2.png) [@KvM](https://community.homey.app/u/KvM)\ **Post date:** [May 6, 2021, 1:07pm UTC](https://community.homey.app/t/a-cry-for-help-diy-roller-blind-shade/46743/28 "2021-05-06T13:07:08Z")
I will, and I will drop a message over here when it works ---
**Author:** ![Edwin\_D](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/edwin_d/32/136417_2.png) [@Edwin\_D](https://community.homey.app/u/Edwin_D)\ **Post date:** [May 6, 2021, 1:08pm UTC](https://community.homey.app/t/a-cry-for-help-diy-roller-blind-shade/46743/29 "2021-05-06T13:08:52Z")
Thereā€™s also an ā€œofficialā€ thread for the app: [[APP] Motion Blinds](https://community.homey.app/t/app-motion-blinds/45608) thatā€™s high on my watch list. ---
**Author:** ![KvM](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/kvm/32/6707_2.png) [@KvM](https://community.homey.app/u/KvM)\ **Post date:** [May 7, 2021, 8:56pm UTC](https://community.homey.app/t/a-cry-for-help-diy-roller-blind-shade/46743/30 "2021-05-07T20:56:01Z")
As promised, a conformation it works. And is more than strong enough for my large curtain. When I opened the box I thought, no way this is gonna be strong enough. But it works very smoothly and seems not even close to the limit of the motor. Iā€™m very happy with the result now. Needed to do the tape trick to thicken the motor parts, I think I will have some better connectors 3D printed in the near future to make it perfect ---
**Author:** ![Edwin\_D](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/edwin_d/32/136417_2.png) [@Edwin\_D](https://community.homey.app/u/Edwin_D)\ **Post date:** [May 7, 2021, 8:58pm UTC](https://community.homey.app/t/a-cry-for-help-diy-roller-blind-shade/46743/31 "2021-05-07T20:58:39Z")
I got in touch with the manufacturer to make sure, but your blinds are indeed within specs. Itā€™s a stong little bugger indeed šŸ’Ŗ Tanks for the feedback, and have fun with it! [Previous page](https://community.homey.app/t/a-cry-for-help-diy-roller-blind-shade/46743.md?page=1)