- A persistent limit is only needed if you want to throttle your inverter permanently or you can use it to set a start value on the battery, which is then always the switch-on limit when switching on, otherwise it would ramp up to 100% without regulation, which is continuous load is not healthy.
- You can set a new limit in the turn-off state, which is then used for on (switching on again), otherwise the last limit from before the turn-off is used, but of course this only applies if DC voltage is applied the whole time.
- If the DC voltage is missing for a few seconds, the microcontroller in the inverter goes off and forgets everything that was temporary/non-persistent in the RAM: YieldDay, error memory, non-persistent limit.
### Update your AHOY-DTU Firmware
To update your AHOY-DTU, you have to download the latest firmware package.
Here are the [latest stable releases](https://github.com/lumapu/ahoy/releases/) and [latest development builds](https://nightly.link/lumapu/ahoy/workflows/compile_development/development03/ahoydtu_dev.zip) available for download.
As soon as you have downloaded the firmware package, unzip it. On the WebUI, navigate to Update and press on select firmware file.
From the unzipped files, select the right .bin file for your hardware and needs.
- If you use an ESP8266, select the file ending with esp8266.bin
- If you use an ESP8266 with prometheus, select the file ending with esp8266_prometheus.bin
- If you use an ESP32, select the file ending with esp32.bin
- If you use an ESP32 with prometheus, select the file ending with esp32_prometheus.bin
Note: if you want to use prometheus, the usage of an ESP32 is recommended, since the ESP8266 is at its performance limits and therefore can cause stability issues.
After selecting the right firmware file, press update. Your AHOY-DTU will now install the new firmware and reboot.
Lukas Pusch
2 years ago
GitHub