How To Flash Shelly Relays With Tasmota Or ESPHome | Voltlog

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High quality PCB Services pcbway.com Welcome to a new Voltlog, in this video I’m going to show how to flash your Shelly relay with Tasmota or ESPHome, the easy way, using the VoltLink USB to serial converter. What is a Shelly relay you might ask? Well, if you are into home automation, a shelly relay is a wifi connected smart relay, built into a very compact form factor in order to fit inside electrical junction boxes like behind wall switches or wall sockets.
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The manufacturer offers a pretty comprehensive app and cloud service as well as addons for integrating with HomeAssistant but you might feel like you like all of your devices to run Tasmota or ESPHome for some particular extra features or just general uniformity across you network so that it is easier to manage. Myself I prefer Tasmota and I won’t go into a discussion of Tasmota vs. ESPHome in this video, whichever you prefer, it’s fine, I’ll show you how to do it.
The first point on our list is going to be safety. Since shelly devices operate on mains voltages, it is very important to think about your safety when doing the programming procedure and generally when installing such a relay. Here for example I have a Shelly 2.5 but what I’m going to show you applies to most if not all of the models in their lineup.
Shelly devices have a power supply inside to step down the mains 240V to 3.3V needed to power the ESP8266 chip inside. That power supply is not galvanically isolated from the programming header, which means there is a risk of electrical shock or damage to equipment if you were to connect this to your computer, while the relay is connected to mains power. So as a first rule, never connect your shelly relay to a computer while it is mains powered.

Опубликовано:

12 сен 2024

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Комментарии : 24

@voltlog 2 года назад

Checkout the latest version of the Shelly flashing adapter on my Tindie: www.tindie.com/products/voltlog/voltlink-cp2102n-usb-serial-adapter-programmer/

@TrevorV 4 месяца назад

I ordered this and got it to America in 11 days! Works beautifully! I have been doing all of my shelly devices using mgos2tasmota and then writing the firmware to esphome after that. It wasn't that big of a deal until I got a Shelly Plus 2PM and there is an error with that model when trying to overwrite the Tasmota with ESPhome. Now, I would do all of them this way. Much, much faster to flash esphome directly!

@RixtronixLAB 2 года назад

Thanks for sharing, keep it up:)

@Airbag888 9 месяцев назад

Can this be used to enable proper bluetooth proxying on shelly 2nd gen devices?

@claudiof.barbano5530 Год назад

I flashed a Shelly 1 with ESPhome, now I move the device and it does not connect to WiFI anymore, how can I put it in AP mode, ora qhat else I can do?

@jonatanboy Год назад

reflash? Did your ESPHome config not have the AP set up?

@tristandwane Год назад

Wull this cable work on a Shelly EM? Is the 2.5 header the same size as the EM?

@MikeMerton 2 года назад

Would you be willing to ship a shelly 2.5 already programmed to homekit?

@davesazama7021 2 года назад

I went to order the voltlink today and noticed that there is an option for one or two shelly adapters. Why would you buy two? I am asking out of ignorance so please don't take this as a criticism.

@voltlog 2 года назад

Some people want spares.

@davesazama7021 2 года назад

@@voltlog OK. Thanks. I figured that was probably it, but just wanted to check.

@joelturner9477 Год назад

Doe the Shelly adapter work with the Shelly 1pm 120/240V?

@voltlog Год назад

For the most up to date compatibility information please check the information on the product page voltlog.com/y/voltlink. You will find a list with devices that have been confirmed compatible in a plug&play mode. Additionally since the VoltLink is a usb>serial adapter, you can flash any serial device, however that might require extra work on your side, it won't be plug&play.

@Amperekaefer 2 года назад

👍.

@DirkTas 2 года назад

Hello, in June last year I ordered one of your serial adapters, an older version, I didn't use it until today, flashed 1 shelly plus i4, 1 shelly plus 1 pm and 3 shelly plus 1 with it and didn't have a problem, maybe a small problem and that is that my version of the serial adapter only supports 100mA, so when starting tasmota I get brownouts. I soldered a 1.27mm pin pitch header myself for it. however I also have 2 shelly 2.5 and I can't flash them, the serial port does not appear. Is there anything I should do, change ? Video I saw was #356!

@voltlog 2 года назад

I have a shelly 2.5 on my bench, I can flash it reliable every single time with VoltLink revC. I did encounter some issues with the shelly EM failing to flash intermittently but I haven't investigated that further. In you case, if the serial port does not appear, it means there might be an over-current event, which will eventually destroy the VoltLink as in the first revisions it was using the internal regulator, only rated for up to 100mA.

@DirkTas 2 года назад

@@voltlog Well mine is a RevA, so I can't use it for the shelly's then I guess?

@DirkTas 2 года назад

I ordered a new one + shelly cable

@voltlog 2 года назад

@@DirkTas It is recommended to avoid connecting the VoltLink revA to devices that need more than 100mA as that will stress the internal regulator to a point where it might get damaged.

@DirkTas 2 года назад

@@voltlog New version RevC arrived today, thank you for the fast delivery, works good this time!