Skip to content

Installing Arska to Shelly Pro 1 v.1

Jump to bottom
Olli edited this page Jun 27, 2023 · 7 revisions

Please note that according to the license of the (Arska) software there is no warranty or liability. Read the manufacturer's instructions and think before you decide start programming or installing a reprogrammed device. However, one instruction regarding programming safety: According to many sources the device's programming port is not intended to be used when the device is connected to the mains. So, disconnect the device from the mains before connecting to the programming port.

  • There is comprehensive information about Shelly Pro 1 at ESPHome site, where I got e.g. the pin sequence of the programming interface and the relay connection through the SN74HC595 circuit. You can find more instructions on YouTube and the internet in general.

  • Shelly Pro 1 relays or LEDs are not controlled directly via the GPIO outputs, but there is an SN74HC595 (shift register) circuit in between. Uncomment a line //define HW_EXTENSIONS_ENABLED in main.cpp:to enable SN74HC595 support in the latest Arska version. Then build and upload the firmware and filesystem to the device.

  • Before upload, I backed up Shelly's program from the device to my computer. Recovery seemed to work too.

#backup, —port parameters depends you computer OS, adapter etc
esptool.py --port /dev/port_id --baud 115200 read_flash 0 0x800000 shelly1probackup.bin
#recovery
esptool.py --port /dev/port_id --baud 115200 write_flash 0 shelly1probackup.bin

Flashing with Voltlink Adapter - easier way

VoltlinkShellyPro

Connecting with VoltLink serial adapter programmer with an custom 6 pin Shelly programming adapter (add it to your order from Tindie) was really straightforward. You just connect 6 pin header correctly (GND on the top in this case, check from the ESPHome link) and it goes automatically to flashing mode (tested with esptool/PlatformIO). The adapter does not supply 12V but it can supply enough current (3.3V) for wi-fi and the relay.

Flashing with DIY connectors - hard way

DIYflashShellyPro

Before I got a Voltlink adapter, I used self made connector with an FT232 based USB-TTL adapter.

  • I used an adapter with FT232 circuit (Aliexpress). At Shelly's end, a 1.27 mm a female header was used. I put thin single-stranded connecting wires (approx. 0.5mm) and glued wires to the female header with two-component glue .

  • When TX,RX, GND and 3V3 are connected correctly to the adapter and the device is in programming mode - Shelly Pro goes into programming mode (flashing mode) when the GIO0 pin is connected to ground during startup - you can use PlatformIO to upload the Arska firmware and filesystem.

  • The USB adapter used was not able to supply enough power for Arska to operate, but the device restarted as soon as the Wi-Fi was turned on by Arska. For this reason, I connected the device to a separate 12V DC power source for test use. Some Shelly versions probably do not support 12 V power input. Arska does not support Shelly ethernet port (RJ45).

Arska(r) Wiki, (C) Netgalleria Oy 2020-2023

Clone this wiki locally