Jack Douglas asked 2 years ago
Hi Sara
I have a couple questions regarding the wiring of the solar-powered esp32.
In the description provided by the link https://randomnerdtutorials.com/power-esp32-esp8266-solar-panels-battery-level-monitoring/, it appears in the third photo the panels are wired in series rather than in parallel as shown in the esp32 instruction manual (Project 4)?
Also, I was wondering if there was a simpler way to solder and wire up the charger/LDO assembly? I tried to literally follow the diagram, and it was a bit difficult, but I did get it to work.
Many thanks
Sara Santos Staff answered 2 years ago
Hi.
In both scenarios, the solar panels are wired in parallel.
Your circuit looks fine.
But, you can wire them like this, for example (I’m not sure if it’s a good practice, I’m not very good at circuits):
Regards,
Sara
Jack Douglas answered 2 years ago
I have now successfully completed making the solar-powered esp32 sensor station as per Project 4 of the esp32 manual, with the exception that instead of using LoRa I modified the code to use the MQTT protocol communicating with a python-based Raspberry Pi broker/subscriber/publisher with ack statements. All of this was greatly facilitated with the help of RNT. Many thanks to you both for your very helpful instruction, and I look forward to more lessons.
Sara Santos Staff answered 2 years ago
That’s great.
I’m glad our lessons are useful for your projects. Thank you so much.
I’ll mark this issue as resolved.
If you need further help, you just need to open a new question in our forum.
Regards,
Sara
JESUS GIL ZAMORA answered 1 year ago
Hi Sara:
I’m trying to power my ESP32 this way, but here https://randomnerdtutorials.com/esp8266-voltage-regulator-lipo-and-li-ion-batteries/ you user a 1000 microF electrolitic capacitor while here https://randomnerdtutorials.com/power-esp32-esp8266-solar-panels-battery-level-monitoring/ a 100 microF electrolitic capacitor.
I’m thinking to use a 100 microF 25V electrolitic capacitor 25 V and a 100 nF ceramyc capacitor. In any case, I would like to know if a 1000 microF is better than 100microF capacitor for this purpose.
Thank you in advance.
Jesús.
Sara Santos Staff answered 1 year ago
Hi.
I’m not sure about the impact of that… But I think both combinations will work just fine. Just try it out with the components you already have and see the result. I think it will work.
Regards,
Sara