I am making something where I use a solar panel connected to tp4056 thats connected to a 2 slot parallel battery holder and then a boost converter which increases it to 5volts and then I connected it to the 5v pin of our arduino mega as well as the ground. However when I connect the 5 volts of the soldered dfplayer and lcd together, the segment display of my boost converter dies and the arduino mega just turns on the ON Led and nothing else.
- Always show us a good schematic of your proposed circuit.
- Show us good images of your ‘actual’ wiring.
here is my wiring except I use a parallel 2 slot 18650 battery holder
How much current can the solar panel output and at what voltage ?
Can you post a link to where you got it from ?
An uploaded picture had got many more points. Some helpers use mobiles or tablets.
That site requires an account to log in
Have you measured the voltage output of the solar panel when powering your project ?
Thanks.
There’s a GND cable between the LCD and the DF-player. That connection must reach the controller GND as well. Pin names for the DF-player had been nice for helpers not playing with that device.
The power to the DF-player is unclear. A controller digital output, as it looks like, is not enough.
great it works but what if I have to add leds now? I need the digital pins to work so I can manipulate them. Thanks!
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If LEDs are wired as below you are okay.
[GPIO Pin]----A[LED]K----[220R]----GND -
If LEDs are wired as below you are probably still okay but 5V would usually come form the regulator.
5V----A[LED]K----[220R]----[GPIO Pin] -
It is good practice to have load current taken at the power supply source.
We call this a Star connection. -
Switches require very little current so their 5V connection isn't too much of an issue.
FYI
Welcome!
The wiring diagram is to fuzzy for me to read and I do not have the parts, a true annotated schematic is much better. You should post links to technical information on each of the devices you use. If you do not have a volt meter I highly recommend you get one, an inexpensive one would be OK. They can be gotten for less then a pack of cigarettes.
Do yourself a BIG favor and get a copy of the Arduino Cookbook and skim it from cover to cover, you will find the answer to most of your concerns. It was the first thing I got when starting with Arduino.
Without the specifications I cannot determine what your problem is but my experience is telling me it is a power sourcing problem. Your circuit will draw about 500mA from the solar cell when operating. So we need the data links.
By manipulation I meant that we turn on and off a specific led by using code as the main control center of my project is actually in another microcontroller (esp8266) and my plan is that whenever my other microcontroller sends signals to the mega it turns on a specific led, edits the lcd, and plays a specific mp3. Based on my understanding I think we have a misunderstanding in the concept I wanna push so I decided to clarify but please do correct me if the information you sent is useful and is the one im supposed to follow. Thank you!
Thank you so much for this suggestion and I promise I will do better next time as it is my first forum and I am just a student in need of help in our school project. I will make sure to read the book you sent and I will also make sure to buy a volt meter.
No problem, I am glad I could help. We all were at the point you are. In simple terms you are learning a new language and skill set, it takes time. Even the old guys like me make mistooks and learn from them.
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We really need to see a schematic before we answer any hardware specific questions.
Schematics show us exactly what components are being used and it shows us how these components are wired. -
Good images of a the user's actual wiring can show us if there are any discrepancies to the schematic.
I am very sorry for this request I'll accomplish the diagram tomorrow but I just really need ways on how I can power my Arduino mega which has LCD, DFplayer (speaker) and LEDs that are connected in my Arduino mega. The wirings are done and are already connected I just need ways how to power the Arduino mega succesfully through solar because connecting boost converter to Arduino mega directly does not seem to work. I am really sorry for this request as I need an urgent answer and I will understand if you cannot comprehend my request. To simplify:
My Arduino mega must have power for RX, 3 LEDs, LCD and DFPlayer module after the boost converter seen in the circuit diagram. However, when I connect the boost converter to the 5V pin of the Arduino mega, the LCDs and other devices do not receive power and do not work while the mega just has the ON led activated.
The wiring is same as the circuit diagram I sent with the difference of LEDs being In digital pins 2,3,4 while they are connected to common geound. I hope I was able to make this as comprehensible as possible and Thank you so much for your answer