yeah but the 5V doesnāt control anything. Itās the 3.3V that changes
There are three wires coming from the rx: Power, ground, and signal. Thatās 5v, 0v, and ā3.3v that changesā. You connect all three to the relay module. The āpowerā (5v) pin, powers the module. the signal wire, signals the module.
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aight
thanks
Yes, but since that is a semiconductor based switch rather than an electromechanical relay, you do actually have to respect the input voltage limit with it. In this case, 28v.
iāll have to step down my battery voltage either way, iām using 12V for the lights
May I suggest that you spend some time reviewing the basic concepts of electricity and electronics before going much further? You seem to be easily confused by simple descriptions and concepts.
Electric vehicles have much more powerful and expensive components and batteries in them than your average teaching tools, and you need to have a workable grasp of the basics to build one safely.
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donāt worry.
I donāt undertsnad things easily if itās in english.
Iām not a native speaker
iām studying electrical engineering atm
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Okay, that makes sense.
Your written english is great, so it was hard to tell whether you were a native speaker or not.
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Every time I order jst extension cable they never fitā¦Iām a noob
The male end never fits the motor
Is it jst pH 2mm JST ZH 2.0 extension cable
Zh, ph, xh, etc all just pertain to the pin to pin spacing. If you can accurately measure that, you will always know what kind to buy.
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Not esk8 relatedā¦
i have the problem that windows wakes my PC from sleep. I figured out what triggers it but havenāt managed to disable it permanently, just temporarily.
The process āBackup Scanā triggers it even though the trigger is set in the future.
āNT TASK\Microsoft\Windows\UpdateOrchestrator\Backup Scanā
I can disable it with the help of Powershell and a psexec.exe that allows me to change that (normally windows wants some login data wich no one can provide) The problem is that the trigger gets reset after 6 or so days.
Ive tried to disable, delete, delay the trigger but it always comes back.
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The only solution to windows is to generally reinstall windows. No one can fully understand itās spaghetti code
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I did a few weeks back. That made it even worse than before.
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Hey Yāall,
I have a question that I think a lot of you may have experience with from selling completes. I am trying to purchase a battery for a boosted Rev from someone online. They live far from me so I would need to get it mailed.
Does anyone know if it is allowed to be mailed and if so what extra costs I can expect using USPS?
The battery is contained in its own enclosure and is 370WHr. It fits quite well in one of USPSā medium flat rate boxes and would love to have it shipped that way, but I am not sure that it can be shipped or what additional costs to expect.
Thanks!
Any ground shipping will do it. They just donāt like flying batteries around, thatās when things get tricky.
Iād expect to pay $30-55 to have it shipped. I recall thatās about what I payed when I shipped mine. Obviously it will be more of you add signing requirements and other protections.
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Okay thanks @Venom121212! However, to clarify some things. Would I ship it in the flat rate rate box and tell the post office that there is a battery in it? Then they would tell me okay we need to upcharge it x amount, which you believe will make the total around $30-$55?
I tried looking it up but I am not finding the information easily and I want to make sure the shipping process goes smoothly and cheaply for the person I am buying from.
How safe are samsung 30q batteries in general? Would overheating turn off cells temporarily, shut them down forever? Make them glow red?
It depends on your definition of overheating, and how they got there.
Any battery will behave badly when mistreated. Lithium ion batteries, due to their high energy and power densities, tend to be more energetic in failure than others. That said, brand-name high-discharge cells are designed to handle abuse better than most others.
They wonāt turn of temporarily.
If they get hot enough to vent, they will stop outputting permanently, and theyāre designed to do that well before reaching the glowing-red stage.
That said, you DO NOT want to be anywhere near an overheated, venting 18650 battery pack, and you will have had every possible opportunity to prevent that event beforehand.
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Thanks for the detailed answer!
While i have you here, i think vesc tool has a command that draws what power you want it to from the batteries and outputs that in motors without holding a remote. I want to use that for a while to test the limits on my entire electrical work (within battery and vesc spec). How do i do that?
There is a current command in vesc tool, but to my knowledge you canāt use it to load down your batteries on the bench, because thereās nowhere for all that power to go.
You can command the vesc to output any desired motor current, but motor current and battery current arenāt the same thing - Itās common to have 2-20x more motor current flowing than battery current in some situations.
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