EcoSPM - Shelly PM Mini Gen3

The EcoSPM is a Shelly PM Mini Gen3 with EcoSensors firmware. It measures voltage, current, power and energy of a single-phase circuit and sends the values via WiFi to ecosensors.cloud – without a detour through the Shelly cloud.

Technically the firmware is based on ESPhome (see the general guide). The hardware is the standard Shelly PM Mini Gen3; it is flashed once via cable (see Flash it yourself).

What you get

• Voltage and current
• Active power
• Total import (energy in kWh)
• Grid frequency
• Temperature inside the device

The values appear in your dashboard on ecosensors.cloud.

Installation

Install and wire the Shelly PM Mini Gen3 according to Shelly's instructions. The EcoSensors firmware changes nothing about the wiring.

Once the firmware is installed (ready-made from us, or flashed yourself), the sensor starts when switched on and, if it finds no known WiFi, opens its hot spot ecospm-<ID> after about a minute.

Commissioning

The setup is the same for all sensors of the Eco series and is described in the general guide. Your sensor is called ecospm-<ID>:

1. Set up WiFi – connect to the hot spot ecospm-<ID>, enter the WiFi credentials
2. Open the web interface at http://ecospm-<ID> or http://ecospm-<ID>.local
3. Register the sensor with the EcoSensor ID (ecospm-<ID>)
4. In case of problems: Troubleshooting

Firmware update

With the EcoSPM you download the update file yourself and transfer it via the sensor's web interface (Way C of the general guide):

1. On the Firmware page, download the update file (.ota.bin).
2. Upload it in the sensor's web interface under OTA Update.

The sensor does not have to be removed for this; you only need to be in the same WiFi. The general notes are under Firmware update. If the sensor can no longer be reached via WiFi, the only option left is flashing again via cable (see below).

Flash it yourself (DIY)

A brand-new Shelly PM Mini Gen3 still carries the Shelly firmware. To switch it to the EcoSensors firmware, it is flashed once via cable (serial). For this the programming connections on the board have to be soldered on (difficulty: high).

You need: soldering iron, a USB-serial adapter with 3.3 V (not 5 V!), a computer with Chrome/Edge, the firmware file "Complete image (initial installation)" from Firmware.

Six connections are needed on the board:

1. Disconnect the Shelly from the mains, open the housing, solder on the connections.
2. Connect BootSEL to GND (flash mode) and connect the adapter or trigger a brief reset.
3. Flash the firmware with the ESP Web Tool – as described in the general guide, Way D (address 0).
4. Disconnect the adapter, release the BootSEL connection and reassemble the Shelly.
5. Install it and continue with Commissioning.

Technical data