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Sonoff Basic R3 DIY OTA

Michael Ingraham 2019-07-23 23:04:38 -04:00
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Sonoff-Basic.md

@ -26,9 +26,9 @@ This is the board layout for the third design iteration of the Sonoff Basic.
The Sonoff Basic R3 uses the ESP8255 chip. With this version, the mains power reverts to solder rails directly on the PCB. It also moves the Wi-Fi module to a separate PCB mounted on the main PCB. It makes access to the underside of the serial interface contacts quite difficult.
This version of the device supports the new Itead DIY architecture which [allows OTA firmware upload](https://www.youtube.com/watch?v=fRS-ukCgD_I). **_The DIY OTA procedure won't work with Tasmota_**. Tasmota expects execution from address 0. DIY OTA expects espressif images starting at either 1000 or 8100. You must flash Tasmota on this this device using the serial interface. The device was reviewed by DigiblurDIY in [this video](https://www.youtube.com/watch?v=A-WcIz47Lco).
This version of the device supports the new [Itead DIY architecture](https://www.youtube.com/watch?v=fRS-ukCgD_I) which [allows OTA firmware upload](Sonoff-DIY). The device was reviewed by DigiblurDIY in [this video](https://www.youtube.com/watch?v=A-WcIz47Lco).
The serial interface pins are broken out on the PCB making flashing using a serial adapter considerably simpler than the Itead OTA process. Since the underside of the contacts is not easily reachable, use a solderless solution (i.e., friction) to maintain contact with the pins to flash the device.
The serial interface pins are broken out on the PCB making flashing using a serial adapter as well. Since the underside of the contacts is not easily reachable, use a solderless solution (i.e., friction) to maintain contact with the pins to flash the device.
## Sonoff Basic R2
Around November 2018, Itead changed the layout of the Sonoff Basic ([issue #4515](https://github.com/arendst/Sonoff-Tasmota/issues/4515)). The new board is labeled as **Sonoff RF R2 POWER V1.0**. It is easily discerned from previous revisions since it uses wires instead of thick solder traces for mains power.