new module as remote

[boelle]

hi

this project on thingiverse https://www.thingiverse.com/thing:3655354 has been much fun to me

it was easy to remove a zigbee module from their light bulbs and then reprogramm it to work as a 5 button remote

but now ikea is slowly replacing their zigbee modules with a new one that for the bulbs concern are far more power hungry and why should ikea bother as they are intended to be always on mains power

and their new 5 button remote do not have a module at all but is one complete pcb and to top it off they now use 2 AAA batteries

that makes it impossible to install it in the danish LK Fuga design, it will simply be to big to sit flush with the other switches

anyone that have started to look in to if the new modules can be reprogrammed to work as a remote and be energy efficient so that it can run on coin cells?

i emagine that the firmware needs to be taken from the new 5 botton remote and changed so that its as efficent as possible

of course the chip on the new module an the new 5 botton remote needs to be the same

and the pcb in the new remote is way to be to be but in a LK switch, from what i have seen online its 2 cm to big in each direction

[MattWestb]

The 3 gen devices is having one very good original Silabs module that is not battery hungry.
And its also possible making custom boards for the new 4 button remote (E2001/E2002) and not using the IKEA PCB if you like but its little more tricky to flashing then its having one newer CPU (need one real J-Tag probe).

And you can using the module from other 3 gen devices if you can flashing it (the E2001/E2002 is not debug locked so its possible dumping and flashing it).

(Dumped and its have 5 buttons if counting the reset button.)

PS tuya is running 730 days on one CR2430 with one nearly the same module (ZS3L) with more LEDs on the PCB.

[boelle]

is that the new 5 botton remote?

in denmark i can only get it as a set with a bulb, but i think that will change

[boelle]

btw... i get the modules from 904.087.97

[MattWestb]

No its not the new 5 button remote then its one 4 button remote if not counting the reset button.
Its the new E2001/E2002 remote "styrbar" and the PCB is looking like this with one Silabs MG21 module.

Its very "clean" and shall being easy for the Danes making one updated PCB for that is fitting in the original deigned switch.

Your module is one ICC-A-1 = the normal 2 gen module.

[boelle]

ahh

i wonder why they changed it to 2 AAA then? ie if the power consumption is the same

[PerMejdal]

I was told the new module would spend too much power. Why else is it using 2xAAA... Maybee I sould give it a try.

[MattWestb]

I can being that IKEA devs have not maximizing the sleep current but the module / chip is very low power.

The reason for the 2 AAA shall being re chargeable and is the new green way IKEA have starting and also all new device having only recycles repairer packing (all plastic is gone).

If its little hungry put 2 CR4530 in parallel on the new PCB (some tuya is having 2 CR2032 and was having one old MG1B module).

Thanks for the PCB layout !!

[boelle]

If its little hungry put 2 CR4530 in parallel on the new PCB

remember that space is VERY limited

40x40mm and barely space for the coincell

[boelle]

currently we use OpenOCD on a pi to flash firmware

can that be used with the new remote too?

[MattWestb]

If they have adding support for ARM Cortex®-M33 the last half year but i have not reading that have being done.

The module datasheet https://www.silabs.com/documents/public/data-sheets/mgm210l-datasheet.pdf

[boelle]

i just saw that you had wires soldered to the programming header and wondered how you dumped/flashed firmware

[MattWestb]

Main flash and data is dumped without problem with Silabs WSTK (it have integrated OBD J-Tag) and Segger J-flasher and the same made with tuya ZS3L modules on LIDL device but have loading the LIDL LED stripe controller with EZSP 6.1.0.0 and is using it as one coordinator in ZHA.

(before sounding my SWD and com cables)
Its haveing the same chip and is also good calibrated and have one good implemented RF part (for being one Chinese module).

[boelle]

sorry for "stepping in a turd" here, but are there other ways to dumb the firmware?

using a raspberry pi right now with the current modules it seems costly to get a new programmer, but on the other hand i bet the one from silabs uses windows software, not that i mind linux but it could be nice to have everything on the same machine

so its a bit up in the air, nice to use the setup i have, but that means a different machine just to flash firmware, with a new setup i can use my main pc

[boelle]

being not so tech savy, i assume you use the debug connector

we use the same currently

but not sure if that would work, i do not have a one of the new modules, but @CableCatDK does

[MattWestb]

With one J-Link (every original version is working also the EDU) and you can building one "OBD clone" from one STM32 board and using it in windows but dont letting Segger updating the firmware on it then its being soft broken. Using Segger flasher and commands programs is working OK for dumping but can being it dont like flashing if having one clone or ST-Link flasher (that is ST OBD flasher only allowed flashing ST chips).
But flashing can being made with Silabs Commander that dont care if its one clone or not (its free downloading it from Silabs web).

The pins used for flashing is the same SWD for both 1 and 2 gen modules only changed is the CPU that must being supported by the probe and / or flashing software.