Quick Update 23/01/23

A project log for UltraTower

Grow vegetables with ultraponics tower

j-gleyzesJ Gleyzes 01/23/2023 at 20:520 Comments

The DC-DC Buck Step Down Converter problem

I use this module (CN3903 3A) to convert 12V to 5V to power two components: the esp32 and the 5V mini pump.

However, it is not capable of feeding both at the same time. After several tests, activating the pump causes the esp32 to crash.

But separately everything works.

Several solutions are possible: 

For the moment I use solution 1 which allows me to test easily.

Disc nut optimisation

The old STL design, was too closed on the disk creating a water droplet retention preventing the creation of fog afterwards. The new design seems to solve the problem.


I'm still testing the latest version of the PCB, the fog creation is good now I'm waiting to see if the disks don't get damaged over time.