I made a post 2 months ago asking about the type of board to use and summarising the functions I want to do for a school project. If you want to check it out here is the link: Smart bookcase with plant monitor + LED
I’ve made some good progress since then. After choosing the Firebeetle ESP32-E because of its appropriateness to my project, I have successfully learnt how to control the LED lights from the Blynk app. Here is also an updated circuit diagram:
I now have two separate questions.
As I am going to be putting these electronics within a bookcase, I just want to know about how well power travels over a distance.
For example, I am planning a 90cm tall bookcase and the easiest way to hide the microcontroller unit is at the very bottom. I am also planning to have 3 LED strips with one being at the very top. This would mean that power would have to travel from the base to the top (around 90cm). For testing I have been using prototyping wires, these to be exact:
Unfortunately the jumper wires are a bit short so I need a better solution. What wires can I use for longer lengths and will I have any problems with this distance in terms of powering the LEDs?
Within the bookcase I also have 2 moisture sensors which use I2C communication with the microcontroller. The moisure sensors I am using are the Adafruit STEMMA Soil Sensor:
I think that by default the sensors have the same address value so I can’t use both at the same time without a change. Do I need to solder the AD0 jumper on one of these to change its address by one (Pinouts | Adafruit STEMMA Soil Sensor - I2C Capacitive Moisture Sensor | Adafruit Learning System)? I think that’s right but just want to make sure before I do any soldering.
Thanks for your help,