Building a Shelly 2.5 USB to TTL adapter cable
![Building a Shelly 2.5 USB to TTL adapter cable](https://www.die-welt.net/upload/shelly/shelly_with_pins_and_cable.jpg)
When you want to flash your Shelly 2.5 with anything but the original firmware for the first time, you
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PL2303HX PL2303 USB to UART TTL Cable Module RS232 Converter 4 Pin
![](https://i.ytimg.com/vi/pYBXYHxs_Tg/oardefault.jpg?sqp=-oaymwEYCJUDENAFSFqQAgHyq4qpAwcIARUAAIhC&rs=AOn4CLB2kbt-VOt3mocW4H1X5bTcQgA9ng)
shelly how to wire it
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Extreme 2xUSB charger / car adapter NCC312U + CM Botland - Robotic Shop
![](https://www.die-welt.net/upload/shelly/SL1X20G.jpg)
Building a Shelly 2.5 USB to TTL adapter cable
![](https://user-images.githubusercontent.com/9309569/59134935-5ca8e280-897d-11e9-96dd-1318ace4744e.jpg)
Question about the Shelly 2.5 GPIO connector · Issue #5652 · arendst/Tasmota · GitHub
![](https://i.ytimg.com/vi/0hQdxa2wQJE/maxresdefault.jpg)
How To Flash Shelly Relays With Tasmota Or ESPHome
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• ElecPow 2.x
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RevK®'s ramblings: To USB or not to USB, that is the question!
![](https://tech.scargill.net/wp-content/uploads/2019/08/tmp55C8.jpg)
Shelly One WIFI Switch - Scargill's Tech Blog
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How to Make a USB to TTL converter
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Shelly 2.5 Adapter Cavo Shelly 2.5 Adattatore Shelly 25 : : Informatica
![](https://www.voltlog.com/pub/VoltLink_CP2102N_USB_TypeC_Serial_Adapter_5.jpg)
VoltLink CP2102N USB Serial Adapter & Programmer from Voltlog on Tindie
![](https://content.instructables.com/FX5/LJRW/KV3TCVHM/FX5LJRWKV3TCVHM.jpg?auto=webp&fit=bounds&frame=1&height=1024&width=1024auto=webp&frame=1&height=150)
USB to Serial TTL V2 : 3 Steps - Instructables