Hi newbie here and haven’t touched electronics in 10 years.
I need to update my van to rpi 5 and going to place ai for power distribution control.
Forum says ai and nve ssd share a bandwidth so not ideal so looking at a sata hard drive. Both can be power hungry so have that problem and rough roads break the wafers in usb ports in the pi.
I’m thinking of cutting the usb plug off the adapter and soldering it directly to the rpi board.
What problems am I going to encounter with program and where would I find colour code used for wires in adapter and the rpi pinout for the usb?
The benifit is i dont have to worry about breaking the wafers un usb ports and can place the hard drive on its own power supply and take that load off pi.
My advice is always: start as simple as possible. Don’t try to solve theoretical problems that might show up, especially if you don’t have any experience and rely on some random forum posts. Build your system with standard cables, SATA and AI, see if it runs stable or not. Come back if you have problems.
Regarding the Pimoroni adapter: don’t use it if you worry about rough roads. Use an enclosure.
Regarding color-code of wires: google is your friend.
Regarding soldering USB3: if you haven’t touched electronics for 10 years, don’t even think about it.
Nice in theory but a power distribution system has to run 24/7 turning it off is not a option.
Your thinking is probably wires shorting, not soldered properly causing interference etc.
My thinking is cutting legs off 1W resistors, bending one side into a loop that fits over the pin and a 90* bend so the loop sits flush, soldering the wires to the other end and slide heat shrink tube down over the exposed metal and soldering joint. Then use epoxy or insulated paste and coat the board area and fold the wires into final position once dry.
Neat, tidy, insulated from each other or any exposed tracks on board and soldered properly. Google gives me same doubts about info…
I came to site as it specialises in pimoroni products so better chance of someone knowing the product and wire colours.
I would hope that if someone gave me the wrong wire colours. Another member would pull it up and correct it…
I may not have touched a component or soldering iron in 10 years but once a electrical tradesman, always a tradesman…
Hm, in no words did I mention anything about turning the system off.
I still don’t know what problem you are trying to solve. Why don’t you buy a SATA-enclosure with dedicated power supply in the first place if you think that the Pi5 cannot power your SATA? Which I think is a wrong assumption in the first place. USB3 will give you 0.9A, that is plenty even for an old SSD. Of course I don’t know what your AI system will do, but I doubt it will trash the filesystem 24/7.
That is why I recommend to build your system first and then measure your true power needs. And your I/O load on the disk.
Again regarding colors: there is no official standard. There are some conventions, but you cannot rely on them. There is a standard regarding data and power lines for plugs and sockets. So the best thing is to check how the existing cables are connected.
The site is was buying everything did not give this option only the dodgy cable one.
In your first reply you said pull the plug off rough roads, as I’m using it as a boot drive that would shut it down.
In forums discussing the ai people are having trouble with power to units as they are power hungry. And as stated using the PCLe creates a shared bandwidth and reduces performance.
After 10 years off the tools I have no idea what’s avaiable unless I trip over it going through sites, and no one in the other forums has used this work around of using usb instead of pcle.
For those having the problems-
The 52pi MVMe SSD USB adapter takes the M.2 nvme drive size upto 4Tb. It screws under the pi so it’s vibration resistant and does not clutter up the top of the pi.can be used as boot or storage.
