Detailed Guide On How To Flash The New Tuya Beken Chips With ...

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Hardware abdul2000 (Abdul Alabri) July 6, 2022, 1:40pm 1 Here is a detailed guide on how to Open Bekenize/flash the new Tuya chips with OpenBK7231T. In this guide I am using an Australian DETA 6922HA-Series 2 Double Power Wall outlet. It uses WB3S - WB3S Module Datasheet-Tuya IoT Development Platform-Tuya Developer.

Screen Shot 2022-07-06 at 22.30.251920×1088 260 KB You will need a Windows OS computer and a USB-to-Serial converter to complete this this.

Download the latest .bin file from Releases · openshwprojects/OpenBK7231T_App · GitHub. Use the OpenBK7231T_UA_x.x.x.bin

Download BKWriter https://github.com/openshwprojects/OpenBK7231T/blob/005c76f41094aa220b19018c2e0a80c130df1c38/bk_writer1.60.zip (YOU WILL NEED WINDOWS OS)

Remove the board from the switch Screen Shot 2022-07-06 at 22.30.581746×1226 311 KB

Start up BKWriter and browse to the .bin file. Bkriter11260×733 104 KB

Connect your USB-to-Serial converter to the WB3S chip like below. NOTE: you must connect Ground to the chip directly while flashing. You will need to connect to the CEN pin to trigger Reset. See below Screen Shot 2022-07-06 at 22.55.251920×959 107 KB

Hit the Program button on BKWriter and it will wait for you for 15 seconds to trigger RESET by shorting Ground with CEN. Screen Shot 2022-07-06 at 23.03.47998×1170 60 KB

Once the flashing is complete, remove all jumper cables and power the chip via the board. Screen Shot 2022-07-06 at 23.05.091264×1594 292 KB

You should now see OpenBK7231T Wifi appear in your Wifi Networks Screen Shot 2022-07-06 at 23.10.13

Connect to the Wifi then set a Static IP address for your computer. Here I am using 192.168.4.5. You can use anything in the format of 192.168.4.x. StaticIP668×592 110 KB

Navigate to the Firmware Webpage by going to 192.168.4.1 on your browser. NOTE: The UI looks very basic. I am in the process of submitting a pull request for better UI that will look like Tasmota . MainPage855×728 33.8 KB

Go to Config then to Configure Wifi. Enter your Wifi Details and click Submit. WifiDetails629×871 43.1 KB

Disconnect from the OpenBK7231T wifi and connect to the wifi you saved to the firmware. To find out the IP address of the chip you will need to go to your router and find it in the DHCP list.

Navigate to the OpenBK7231T APP by entering the IP address in the browser address bar. You can click on Configure Module to start configuring the device (Unfortunately there is no templates like blackader templates for this yet) or you can use the one of the Quick Config devices. I have added the configuration for this DETA switch to the quick config. Screen Shot 2022-07-06 at 23.23.12982×1544 236 KB

You can now configure other things like Naming the device and configuring MQTT settings. Once you have done this you can now get the Home Assitant configurations by clicking on the Generate Home Assistant cfg button. Screen Shot 2022-07-06 at 23.28.191180×1230 117 KB

There is WebApp the you can launch to use for configurations and also to do updates OTA. Screen Shot 2022-07-06 at 23.25.101082×832 42.2 KB

Happy Days!26 Likes anogma (Cristiano Kliemann) July 6, 2022, 6:28pm 2 Nice!It would be nice to include this guide in the main README.md of OpenBKT7321T. If you ask, I’m sure the author will happily add the link in the “Detailed flashing guides along with device teardowns” section.1 Like abdul2000 (Abdul Alabri) July 7, 2022, 1:54am 3 Will do. I will submit a pull request today.2 Likes ryanbeaton (Ryan Beaton) July 7, 2022, 4:22am 4 Thank you for doing this.2 Likes ferbulous (Shaq) July 7, 2022, 10:42am 5 I never could get the windows bkwriter working and just use the python tool On another note,you should dump the firmware bin toGitHub - tuya-cloudcutter/tuya-cloudcutter: A tool that disconnects Tuya...A tool that disconnects Tuya devices from the cloud, allowing them to run completely locally. - GitHub - tuya-cloudcutter/tuya-cloudcutter: A tool that disconnects Tuya devices from the cloud, allo...Makes it a lot easier to flash openbkt by ota assuming tuya hasn’t patched it2 Likes Sads (Owen Sadler) July 9, 2022, 8:28am 6 Good point. Is tuya-cloudcutter able to flash custom firmware at the moment? Instructions say not quite yet but I am hoping this is out of date.These two projects seem a match made in heaven for new Deta products ferbulous (Shaq) July 9, 2022, 8:34am 7 Yes, you can flash via ota after applying the cloudcutter patch. There’s a list of devices you can pick (most have similar chip, cbu, cb3s etc) and if the patch doesn’t work you can just dump the tuya firmware bin for the devs to update. Makes it easy for the next device without having to solder again.2 Likes abdul2000 (Abdul Alabri) July 9, 2022, 8:50am 8 We have released the new UI for OpenBK7231T_App which looks very familiar

. Check it out Release 1.6.1 · openshwprojects/OpenBK7231T_App · GitHub

Screen Shot 2022-07-09 at 13.17.571710×1608 209 KB 3 Likes abdul2000 (Abdul Alabri) July 10, 2022, 12:24pm 9 The link is now included in the README.md. daniel.syd (Daniel) July 13, 2022, 4:23am 10 Thanks for the guide. I’m new to HA, but I’ve been watching a heap of HA-related videos for the last month or two. I was completely unaware of a reflash alternative for the WB3S until I came across the ‘Australian certified hardware’ thread the other day. I was half-prepared to buy a solder heat gun and start replacing modules.I tried getting LocalTuya set up via the iot.tuya integration method the other day, and it’s a major nightmare. It wouldn’t let me retrieve my API password, so I gave up on that. I’d much prefer a cloudless approach.I tried hooking up my 3-gang Deta wall switch last night, but I think my USB to TTL device from Jaycar doesn’t cut it. I’ve ordered one on eBay that was recommended by the creator of OpenBeken. I just wish I had a 3D printer so that I could print one of those little push-pin jumper templates to avoid soldering altogether.I’ll report back here once the new CH340G arrives.BTW, does OpenBeken support power monitoring yet? I have a single Deta power point with power monitoring that I want to use to trigger some more reliable automations when my TV is powered on and off. The LG integration is too slow. Sads (Owen Sadler) July 13, 2022, 4:42am 11 I haven’t had any joy yet either, but have not ruled out a fault my end - have not had enough time to fully trouble shoot.

PXL_20220710_0431424541920×2560 475 KB ferbulous (Shaq) July 13, 2022, 3:29pm 12 Hi, is there steps for restoring tuya firmware if I ever need to? I backed up the firmware.bin from a bk7321n device using bk7231tools from here, extracted the rbl files But now I’m not sure what’s the next step is. Do I just flash cb3s_3gang_13july2_app_1.00.bin firmware? ferbulous (Shaq) July 13, 2022, 3:33pm 13 There’s support for power monitoring if your device has BL0937 onboard

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photo_6231103012638666828_y960×1280 224 KB 4 Likes arcos (Arcos P) July 21, 2022, 6:26pm 14 Great project. I almost lost hope with my new switches that use BK7231T. Switches are going offline too often with Local Tuya integration.I have a few Gosund SW2 Dimmer switches. I installed OpenBK on one of these device, but I have no idea how to set up the configuration to make them work with OpenBK.I also have a few SW5 Gosund switches. I didn’t try flashing them yet, but I have the same question. How to find hot to configure them.Thanks, Arcos abdul2000 (Abdul Alabri) July 24, 2022, 1:19pm 15 You can do trial and error but have a look at the devices listed in the Quick Setup. Then Google them and see if any of them are similar to your switches. Then try the quick setup as a starting point. Then change configs one at a time until you get the right config for your switch.OpenBK is currently looking into building a javascript based database for configs which will allow you to add your new configs for others. Similar to Tasmota Blackader. abdul2000 (Abdul Alabri) July 24, 2022, 1:21pm 16

SW5 Gosund switches

Seems to be in the Quick Setup already! ribolis (Ribo) July 24, 2022, 9:22pm 17 Hi, Thanks for your effort! I’m wondering what is the flasher tool doing in detail and why is it windos only? cheers daniel.syd (Daniel) July 26, 2022, 5:43am 18 I think it’s a Tuya tool. There are Python options too. Take a look at the project page on Github: openshwprojects/OpenBK7231T_App: Open source firmware (Tasmota replacement) for BK7231T, BK7231N, XR809 and BL602 (github.com) daniel.syd (Daniel) July 26, 2022, 1:01pm 19 I managed to get a Deta 3 Gang Switch (6903HA Series 2) flashed and up and running today. I’ve not yet hooked it up to HA via MQTT, I’ll do that tomorrow. DETA 3-Gang 6903HA Series 2_small

open_bk_Deta6903HAs2_screenshot700×668 117 KB Buttons, Relays, and WiFi status LED all configured after a bunch of head scratching and trial and error. I’ll add a pull request to the repo to get the device template added later. For now, these are the pinouts:1 Like abdul2000 (Abdul Alabri) July 26, 2022, 11:54pm 20 Great work! The OpenBK7231T_App should generate the MQTT settings for Home Assistant for you. Then copy that and add it to your configuration.yaml. If you have MQTT setup with Home Assistant already this should be 1 minute work. Good luck!next page →