FIrst off, Ill post my disclaimer: I am as green as the spring grass when it comes to all things electronics other than how to use them, I have a general understanding of the concept, design, and operation of them . That is it. But Ive never been afraid in the slightest to sail off right into the middle of things know nothing about and throw a hand at it. After all, thats the first step to becoming well versed in a subject, right? The difference is that most people take that first step into a class room, or into some other form of instructor-led environment. When I do it I usually try to walk off the street and sit in the CEO's chair, Learning off of self education and peer-to-peer consult. I decided to take one a from scratch build project for my son and assemble a much more comprehensive and customizable Led light power and control system for my sons drone. Hes autistic and LOVES light shows and the market for Custom drone lighting is......... Lacking. Its vastly underserved and low tech. Necessity is the mother of invention. So here I am, building my own overpowered, underengineered, barebones bush league light system that will probably be on the verge of exploding at any second and i intend to strap it to a drone and fly it 200 feet over peoples heads. People as immature as me should never be as smart as i am. This is what you end up with; At any rate, my questions are in regards to the light power systems. This is the second design attempt; The first one was grossly inept and underpowered and along with that as well as some other complications had to be canned. This new design is much more complex, but also has serious dimensional restrictions. Spatial limitations on this buils is 60mm x 140mm x 30+/-5mm. 139mm x 59mm x 8mm of that is already gone to accommodate the batteries. take off another 5mm in height because of multiple circuit board layers. Its powered by 2 3.7V 5000mAh Lithium Polymer batteries. Current design is to wire them in series, but thats also part of the reason Im here. Instead of the UBECs in V1 that regulated power, V2 calls for using a DC Boost Converter Module for power management. The different components planned to be implemented in the system will have operating voltages of 5V and a few will be 12V, including a RF Relay Switch. Also planning to mount an onboard charge/discharge protection BMS board on the back end. My question is about which Boost Converter is best for my application. I havent scaled it out 100% but preliminary data is suggesting that I will not have the space for a Buck-Boost Power Supply like this DROK model shown here:
https://www.amazon.com/dp/B078Q1624B/ref=cm_sw_r_other_apa_i_3W8fFbPHWJY39
The most likely choices will be a device simlilar in design and capabilities to these:
https://www.amazon.com/dp/B08979VKVL/ref=cm_sw_r_other_apa_i_F38fFbY323VJV
https://www.amazon.com/dp/B07MK2WBPQ/ref=cm_sw_r_other_apa_i_.48fFb7H1YDPD
https://www.amazon.com/dp/B087JG5V8Y/ref=cm_sw_r_other_apa_i_m88fFbQM926CQ
https://www.amazon.com/dp/B07VSD3MK5/ref=cm_sw_r_other_apa_i_c98fFbR2AV4JV
Any expert input on which, or any oother options not show would be best suited?most practical Would be greatly appreciated.. The only problems that I have with either of these devices is current limitiations. On almost all Ive seen, the current limits are below what the system will call for.
A few other questions about Power Supply and system function if someone would please take a moment answer id greatly appreciate it.
1.Would batteries-in-series or batteries-in-parrallel be more ideal in this setup? I understand the diffference between how theyre set up. But understand nothing about the implications each has inside the system.
2. In a previous post here last week, the comment was made to me "Multiple power supplies in a single system can be problematic". Duly noted. Whart about running one supply for each barttery individually. TWO systemss?
3. The jump from 7.4 to 12V already seems drastic to me and likely to have consequences at some point. How sustainable is it to to continually operate a 12 Volt system on a 3.7 Volt Battery?
4. With the onboard BMS board, is running a single supply hooked to a single battery while the other battery is wired in so that is actively charges the battery hooked to the power supply? Is this a possibility?
5. What exactly are the effects on a system, during operation and over time, of running a system thats having to make such a large voltage boost. I may not understand electronics, but in every other kind of field that I do have experience, If youre having to constantly supplement 50 to 75% of the power you need then you usually have a very large problem and might even be borderline on the verge of a catastrophic failure;.
Is the answer to all of these questions, "Stop being so fucking cheap, forget about the space issues and buy a 3rd battery so you can get up to 11.1 volts because stepping down can be done in a much smaller space and and have to deal with this shit.
Again, I appreciate the time youve taken to readn and answer any questions. Any suggestoins uoui have about anything are gladly welcome and will be received.
https://www.amazon.com/dp/B078Q1624B/ref=cm_sw_r_other_apa_i_3W8fFbPHWJY39
The most likely choices will be a device simlilar in design and capabilities to these:
https://www.amazon.com/dp/B08979VKVL/ref=cm_sw_r_other_apa_i_F38fFbY323VJV
https://www.amazon.com/dp/B07MK2WBPQ/ref=cm_sw_r_other_apa_i_.48fFb7H1YDPD
https://www.amazon.com/dp/B087JG5V8Y/ref=cm_sw_r_other_apa_i_m88fFbQM926CQ
https://www.amazon.com/dp/B07VSD3MK5/ref=cm_sw_r_other_apa_i_c98fFbR2AV4JV
Any expert input on which, or any oother options not show would be best suited?most practical Would be greatly appreciated.. The only problems that I have with either of these devices is current limitiations. On almost all Ive seen, the current limits are below what the system will call for.
A few other questions about Power Supply and system function if someone would please take a moment answer id greatly appreciate it.
1.Would batteries-in-series or batteries-in-parrallel be more ideal in this setup? I understand the diffference between how theyre set up. But understand nothing about the implications each has inside the system.
2. In a previous post here last week, the comment was made to me "Multiple power supplies in a single system can be problematic". Duly noted. Whart about running one supply for each barttery individually. TWO systemss?
3. The jump from 7.4 to 12V already seems drastic to me and likely to have consequences at some point. How sustainable is it to to continually operate a 12 Volt system on a 3.7 Volt Battery?
4. With the onboard BMS board, is running a single supply hooked to a single battery while the other battery is wired in so that is actively charges the battery hooked to the power supply? Is this a possibility?
5. What exactly are the effects on a system, during operation and over time, of running a system thats having to make such a large voltage boost. I may not understand electronics, but in every other kind of field that I do have experience, If youre having to constantly supplement 50 to 75% of the power you need then you usually have a very large problem and might even be borderline on the verge of a catastrophic failure;.
Is the answer to all of these questions, "Stop being so fucking cheap, forget about the space issues and buy a 3rd battery so you can get up to 11.1 volts because stepping down can be done in a much smaller space and and have to deal with this shit.
Again, I appreciate the time youve taken to readn and answer any questions. Any suggestoins uoui have about anything are gladly welcome and will be received.