Voltage range 12V to 29V?

[kershner]

The Technical specifications for PCB 1.4 (and 1.3) indicate "Voltage range 12 to 29V"
https://www.marotronics.de/Ardumower-Mainboard-14-The-configurator-for-your-robot-lawn-mower

However, it appears that 15V zener diodes D2 (undervoltage protection) and D7 (reverse polarity protection) will prevent a 12V system from working.

https://github.com/Ardumower/ardumower/raw/master/pcb/Produzierte_Platinen/megashield_svn_1.3_verbind/schematics/schematics.pdf

see page 30 and page 32

What changes need to be completed for a 12V system to work? Are there any drawbacks to using 12V besides increased current?

Thank you.

 

[BerndS]

Hi @kershner ;
I habe not total overview what you have to excange for 12V. At leasr the relais is working on 24V this must be changed. But I will check with Uwe.

 

[BerndS]

Uwe was online, he confirmed that only the Relais must be changed to a 12V Version.

 

[kershner]

Oh yes, the relay, forgot about that. thanks.