Superrollo GW60 schematic

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1

Hi all,

as I’ve recently moved and now live in a flat with “Rolladen”, I’d like to automate them and checked out the Superrollo GW60. As readers might know, they’re electronic but “dumb” and need extra hardware to integrate.

Now, (a) I find the idea of purchasing the ZB60 remote frankly ridiculous, and (b) the GW60 doesn’t actually work properly for me because my “Rolladen” are quite old and have dead points where they don’t continue rolling down unless you wiggle the straps a bit. This means rolling up works perfectly fine but they don’t come down properly. Whether this can be fixed by driving the motor in some other manner (e.g. back- and forth) I don’t know, but the original GW60 simply cannot do this. Either way I decided to take one apart and reverse engineer the schematic.

Since, well, like probably most of us, I have a ton of random projects, there’s a good chance I won’t continue doing anything on this for a while, so I decided to post the schematic here.

gw60_main
gw60_main1754×1240 176 KB

A few notes:

  • there’s a 78L05 power regulator I was too lazy to include
  • I left out all decoupling capacitors
  • the relay is a Omron G8ND-2 DC12. Funnily enough, it’s end of life, they’ll have to pick another one. I didn’t fully reverse engineer the circuitry around it since it’s kinda obvious.
    • also 2 freewheeling diodes on the relay coil drives aren’t included
  • it uses a PIC16F690 microcontroller, which at this point is politely described as “antiquated”.
  • there’s an 8-pin “pad land” that presumably plugs into the ZB60 module. I don’t have the ZB60 module, so I don’t know what that looks like. It has 2 pins from the microcontroller going to it, and those pins can carry UART RX and TX, and it is quite likely that they do. If I had the ZB60 I’d probably solder on some wires and capture traces, but I don’t, so I can’t.
  • it uses one reed switch and one hall sensor to determine whether the strap and roll are moving, respectively. Those have to be in exact positions to line up with magnets in the small roller and large wheel, respectively.
  • the connector from the “main” PCB to the “buttons & LEDs” PCB should be Molex PicoBlade 51021 compatible. Haven’t verified that though. (Compatible connectors are made by a whole bunch of companies.)

All in all, I probably wouldn’t even bother reverse engineering this further, and just build a completely new PCB with an ESP32 (or other µC) on it. But here it is, in case it helps anyone.

Cheers!

(LED/button board in a separate post, “new users can only put one file”)

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Schematic of the small Button/LED board:

gw60_btns_leds
gw60_btns_leds1754×1240 58.9 KB

It’s held on with 2 Torx T6 screws, if you need that screwdriver you might have to order that, home improvement stores ain’t gonna have it.

(If someone wanted to try for it, it should be possible to wire into that board e.g. with an ESP32. But it’s physically in a bad place to get to, right next to where the strap is running. Wires might get tangled up.)

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Suggestion: Fix the mechanicals to run smoothly first, otherwise you run the risk of burnout if something gets stuck.

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It doesn’t actually get stuck, it gets loose… which might actually be way harder to fix. (If anything what I’m risking is that it “rolls” all the way down, except it doesn’t and the strap is just flapping around loosely, and then at some point later the slats come crashing down with a giant bang.)

Greasing something in the slats (or their guides) might help, but honestly, what it needs is replacing the “roll” that the slats are rolled up on, and I can’t do that because I’m renting. I’m already going quite close to the line of what’s permissible as a renter :frowning:

(Either way it’s rather shit & I can’t help but take away that these strap rollers are far inferior to just putting a motor in the spool itself.)