como conseguiram alimentar o raspberry? usaram uma bateria especifica? to tentando usar li-ion para isso e pelo que parece ele não aguenta, vive falando de baixa voltagem
acho que é o regulador de tensão ou a propria amperagem das pilhas, tentei fazer uma ligação em sere e paralelas para conseguir ver se aumenta a amperagem e pelo visto não deu certo, usei dois suportes de pilhas com ligação em sere, a ideia era que fizesse a soma da amperagem, mas ele continuou acusando a baixa voultagem, meu raspberry esta ligado no reguladorde tensão com 5.25v deveria aumentar a voltagem?
Mhh 5.25V sounds alright, I wouldn't increase the voltage any further (in fact, according to the Raspberry Pi documentation, 5.25V already is the maximum). Which step down modules are you using?
Ok, honestly we had some problems with the cheap LM2596 modules in the past too. Which Pi version are you using? I suppose the Pi 4/5 can draw more than 2A under continuous load which could be the reason you see the low voltage warning. Otherwise I wouldn't recommend connecting two step down modules in parallel, but rather using a separate one for the Pi and a second one for the rest of your 5V electronics (eg sensors, microcontrollers or servos). Servos starting to turn under load can create huge ampere spikes leading to a rapid decrease in voltage which can cause the low voltage warning you see on the Pi. As a quick workaround (if you can't use a separate step down module for the Pi for some reason) try adding a capacitor to smooth out the voltage. Just search the internet for "capacitor smooth out voltage" if you need more information.
How did you manage to power the Raspberry? Did you use a specific battery? I'm trying to use Li-ion for this, but it seems like it can't handle it and keeps showing low voltage. I think it might be the voltage regulator or the battery's amperage. I tried connecting batteries in series and parallel to see if it increases the amperage, but it didn't work. I used two battery holders connected in series, hoping to add the amperage, but it's still showing low voltage. My Raspberry is connected to the voltage regulator with 5.25V-shouldn't that increase the voltage?
Hi and sorry for the late answer. Honestly we are doing nothing special to power the Pi, just 4x 18650 cells (2 would suffice though) in series paired with a proper step down module. Just make sure that your step down module can handle ~3A of current and if you can adjust it to 5.1 or 5.2V. Is there anything else connected to the 5V that powers the Pi? Which step down module are you using?
Hi, I have seen your videosss and it is very interesting how is your robots and run competitions going, speccially the line follower, can I ask how does the robot read the green block so knows where to go?
Thank you, of course you can ask. As I can't paste images into my answer and it would become quite long trying to describe exactly what we are doing, I would recommend checking out our TDP if you are really interested: kraemer123.de/bitflip/files/BitFlip%20TDP%202024.pdf If TH-cam removes the link in the future, you can also find the TDP in the docs folder of this year's GitHub Repo or on your website (you can find both in the video description)
What a run 🎉
como conseguiram alimentar o raspberry? usaram uma bateria especifica? to tentando usar li-ion para isso e pelo que parece ele não aguenta, vive falando de baixa voltagem
acho que é o regulador de tensão ou a propria amperagem das pilhas, tentei fazer uma ligação em sere e paralelas para conseguir ver se aumenta a amperagem e pelo visto não deu certo, usei dois suportes de pilhas com ligação em sere, a ideia era que fizesse a soma da amperagem, mas ele continuou acusando a baixa voultagem, meu raspberry esta ligado no reguladorde tensão com 5.25v deveria aumentar a voltagem?
Mhh 5.25V sounds alright, I wouldn't increase the voltage any further (in fact, according to the Raspberry Pi documentation, 5.25V already is the maximum).
Which step down modules are you using?
@@evbrobocup Regulador de Tensão LM2596 Módulo Ajustável DC-DC.
Ok, honestly we had some problems with the cheap LM2596 modules in the past too. Which Pi version are you using? I suppose the Pi 4/5 can draw more than 2A under continuous load which could be the reason you see the low voltage warning.
Otherwise I wouldn't recommend connecting two step down modules in parallel, but rather using a separate one for the Pi and a second one for the rest of your 5V electronics (eg sensors, microcontrollers or servos).
Servos starting to turn under load can create huge ampere spikes leading to a rapid decrease in voltage which can cause the low voltage warning you see on the Pi.
As a quick workaround (if you can't use a separate step down module for the Pi for some reason) try adding a capacitor to smooth out the voltage.
Just search the internet for "capacitor smooth out voltage" if you need more information.
How did you manage to power the Raspberry? Did you use a specific battery? I'm trying to use Li-ion for this, but it seems like it can't handle it and keeps showing low voltage. I think it might be the voltage regulator or the battery's amperage. I tried connecting batteries in series and parallel to see if it increases the amperage, but it didn't work. I used two battery holders connected in series, hoping to add the amperage, but it's still showing low voltage. My Raspberry is connected to the voltage regulator with 5.25V-shouldn't that increase the voltage?
Hi and sorry for the late answer. Honestly we are doing nothing special to power the Pi, just 4x 18650 cells (2 would suffice though) in series paired with a proper step down module. Just make sure that your step down module can handle ~3A of current and if you can adjust it to 5.1 or 5.2V. Is there anything else connected to the 5V that powers the Pi? Which step down module are you using?
Hi, I have seen your videosss and it is very interesting how is your robots and run competitions going, speccially the line follower, can I ask how does the robot read the green block so knows where to go?
Thank you, of course you can ask. As I can't paste images into my answer and it would become quite long trying to describe exactly what we are doing, I would recommend checking out our TDP if you are really interested:
kraemer123.de/bitflip/files/BitFlip%20TDP%202024.pdf
If TH-cam removes the link in the future, you can also find the TDP in the docs folder of this year's GitHub Repo or on your website (you can find both in the video description)
@@evbrobocup Ohh, thank you very much for the answer, it can help me a lot!
No problem and good luck! If you have any further questions, just drop us an email
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GOAT!!
Thank you soo much! But also props to team Overengineering^2 and Offroad who were 1st and 2nd this year
Hello, I am using tcs color sensor for green blocks, but sensor don't work properly. Can I contact you via E-Mail, because I need help.
Yeah of course: robocup.evb@gmail.com