Request support for Zemismart Electric Curtain Motor (Wifi), model BCM500DS-TYW

[MBarti]

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Log Message

"Device matches graywind_shades with quality of 100%. DPS: {"updated_at": 1714075988.0670383, "1": "stop", "2": 100, "5": "back"}"

In the HA user interface I'm offered the following device types to select from:

• co2_box
• graywind_shades
• illumanance_sensor
• loratap_curtain_switch

Information about DPS mappings

{ "result": { "model": "{"modelId":"000003ghx7","services":[{"actions":[],"code":"","description":"","events":[],"name":"默认服务","properties":[{"abilityId":1,"accessMode":"rw","code":"control","description":"【必选项】该DP点用于控制电机的开启、暂停、关闭。该DP点枚举值参数不允许修改，不允许增减。其中，continue功能在APP面板无呈现，用于第三方（Google home）开通使用，下发指令后，需要MCU记住上一次的状态，并执行动作，注意，无该功能，无法通过WWGA认证。","extensions":{"iconName":"icon-dp_power2","attribute":"1024"},"name":"设备控制","typeSpec":{"type":"enum","range":["open","stop","close","continue"]}},{"abilityId":2,"accessMode":"rw","code":"percent_control","description":"如果窗帘电机可以监控窗帘目前的所处位置，例如窗帘现在开了一半，也就是50%，那么可以通过该DP点进行窗帘位置的自定义控制。控制使用该DP点，如果选择了该DP点，必选选择“开启百分比状态显示”，该DP点数值范围值参数不允许修改，不允许增减。","extensions":{"iconName":"icon-icon-percent","attribute":"1024"},"name":"开启百分比控制","typeSpec":{"type":"value","max":100,"min":0,"scale":0,"step":1,"unit":"%"}},{"abilityId":3,"accessMode":"ro","code":"percent_state","description":"该DP点与“开启百分比状态控制”配套使用。该DP点用于显示实际窗帘所处位置。该DP点数值范围值参数不允许修改，不允许增减。","extensions":{"iconName":"icon-icon-percent","attribute":"1024"},"name":"开启百分比状态","typeSpec":{"type":"value","max":100,"min":0,"scale":0,"step":1,"unit":"%"}},{"abilityId":5,"accessMode":"rw","code":"control_back","description":"用于设置电机转向，顺时针，或者逆时针，forward代表顺时针，back代表逆时针","extensions":{"iconName":"icon-dp_mode","attribute":"1024"},"name":"电机反转","typeSpec":{"type":"enum","range":["forward","back"]}},{"abilityId":12,"accessMode":"ro","code":"fault","description":"【必选】设备上报故障值，该DP点枚举值可增减，但不可修改枚举值名称，例如可以删除motor_fault，可以增加其他值，未选则不展示该功能。 如需要修改在APP面板中显示的内容，可以前往第四步的拓展中心，多语言管理修改代表值，新增的枚举值所代表的的内容也是在多语言中修改代表值。","extensions":{"iconName":"icon-baojing","attribute":"1024"},"name":"故障告警","typeSpec":{"type":"bitmap","label":["motor_fault"],"maxlen":1}}]}]}" }, "success": true, "t": 1714073577986, "tid": "9ecdf5ae033a11efa95c2ed630a352ef" }

The codes extracted using the provided console script are: {1: "Control", 2: "Curtain position setting", 3: "Current curtain position", 5: "Motor Direction", 12: "Fault"}

I can see in the logs that "Control" can be at least "Stop", "Close", "Start" The "curtain position setting" is a & value from "0%" to "100%"

Product ID

"product_id": "f6jujmx0is5td50x",
"product_name": "Zemismart Smart Electric Curtain Motor"
"model": "BCM500DS-TYW",

Information about how the device functions

https://www.zemismart.com/products/-bcm500ds-tyw

It's a curtain controller with track. It can open/stop/close curtains and also set percentage opening (e.g. open to 50%). In the tuya app one can also reverse the motor direction, if a such a set up for one's installation is needed.

Warning: currently the devices is detected by the tuya local plugin as "graywind shades", which doesnt work! It can't set up % opening, does not read the current "open percentage" status properly, so I don't know the current state of the curtains.

[make-all]

The Graywind shades are an exact match for the dps that are being reported.

[MBarti]

The Graywind shades are an exact match for the dps that are being reported.

That’s awkward. I’m sure about the Zemismart data - have the product and extracted the data myself.

In that case I’d suggest showing both options to the user and letting them choose which product they have.

[MBarti]

This is not fixed in the latest version. Now I can control the percentage of opening, but 2 problems remain:

1. I cannot properly see the status of the curtain - it says "unknown" at the top. Also the percentages are inverted - see below.
2. As I have the motor direction permanently set to "back", the buttons in HA are inverted - i.e. If the curtain is open, the available button to press should be "close", and now it's grayed out, while the "open" button is available to press. Instead of 92% open, it shows 8% open.

See enclosed screenshot. The HA view (incorrect) vs the correct Apple Home app view (where I added it directly without HA)

[MBarti]

@make-all Buggy implementation of issue #1852 - please reopen; "[Request support for Zemismart Electric Curtain Motor (Wifi), model BCM500DS-TYW]"

[make-all]

This seems to be closer to the Loonas curtain than Graywind - the position appears to be inverted the same as Loonas, but the current_position does not seem to be reported, even though it appears in the tuya portal info. I have made the Loonas current_position optional so that it matches also. Regarding the status of Unknown, this is due to the current_position (dp id 3) not being reported locally.

[MBarti]

1. I checked again in the Tuya portal and the The CURRENT position is reported, but in the other variable - in '2: "Curtain position setting'; It's correct even if I change the position in another way (by pulling the curtain or through Homekit - outside of Home Assist.)

2. 1. The inverted position is probably due to the "Motor direction" setting that I have set in the Tuya app to "back" (as opposed to "forward"); This would need to be corrected in this plugin; I.e. when my shades are closed they are reported as "open" in HA;

So: If "motor direction" == "back" then actual_position = (1 - Curtain_Position_Setting), else actual_position = Curtain_Position_Setting [same for reporting open vs closed)