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werto165

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Everything posted by werto165

  1. I know that quite a lot of laptop batteries are based off 18650 cells do you think it would be possible to buy a new laptop battery and swap the old cells for newer larger capacity cells? I've been looking and the IC for the battery management system (charge controller?) anyway reprogramming it needs kit that costs about £100 whereas a new battery is only about £20 so I thought that would be a better route. Would it be possible to place more cells in parallel to get greater capacity and perhaps 3D print a new enclosure for the improved battery? I know that spot welding is probably required but my university has that capability so I would be fine in that regard https://www.ebay.co.uk/itm/18650-3-7V-4000mAh-BRC-Rechargeable-Li-ion-Battery-Lithium-Cells-UK-Seller/263876035192 18650 cells https://www.amazon.co.uk/Replacement-Pavilion-800049-001-800010-421-HSTNN-DB6T/dp/B07DQKXD5G/ref=sr_1_7?crid=1MIWEEQ1DRLVY&keywords=hp+pavilion+battery&qid=1562852302&s=computers&sprefix=hp+pavilion+b%2Ccomputers%2C157&sr=1-7 battery I'm thinking of taking apart
  2. werto165

    Hey all, wanted to log back in to give some hel…

    Your interests are going to change over time for sure. I mean I was super into PC hardware then it just doesn't seem to have the spark it used to do. I kinda just enjoy learning more about how the hardware works now rather than just looking at the different components. I was never really into PCPP but I know a lot of people on this forum are. Life gets in the way sometimes too, sounds like you've had a rough time but keep your head up I don't know if u remember speaking to me I think we skyped what like 3 or 4 years ago now can't exactly what we talked about but I think I talked about getting into drones and u talked about PSU's. I'd love to get into cars I'm thinking about doing a custom HUD for a car once I get enough money who knows it could work for your car too , I did a whole uni project where it was reading CAN messages (twisted wire communication that most if not all cars use, might have heard of OBDII?) . Yeah I have been binging the avicii album too, what's your favourite song? mine is the one with nanoo baoi (can't spell off the top of my head lol) SOS is pretty good too.
  3. werto165

    Do you know why google photos is eating into my…

    I think I firgured it out, I have to change the quality preference on the photos I have and then it'll reduce back to no storage used, just don't have a suitable back up atm so I'm gonna do it another time.
  4. Do you know why google photos is eating into my data quota for googles online storage. On google photos I've got it set to high quality which shouldn't eat into the data. 

    1. WkdPaul

      WkdPaul

      That just gives you unlimited storage on Google's server, it will still eat through your data quota if you have enough photo that you upload and download. To avoid using your data, turn off "cellulare data backup", you'll still download the pictures when looking at them though.

    2. werto165

      werto165

      I think I firgured it out, I have to change the quality preference on the photos I have and then it'll reduce back to no storage used, just don't have a suitable back up atm so I'm gonna do it another time. 

  5. XBee is pretty easy to use, just look up that with an arduino, then make it access a sound file on an SD card
  6. could you do something like this: https://www.arduino.cc/en/Reference/KeyboardWrite using an arduino and some code>?
  7. Nah whilst you're here are static pressure fans needed for a rad? just trying to make this as cheap as possible noise is not an issue either really.
  8. It doesn't need to be sub zero in that sense, the ambient temperature is below 0C at -10C minimum, I assume you just need a water gylcol mix so that the water doesnt freeze is that correct?
  9. Hi all, I'm working with a motor controller for my uni masters project and I was wondering if it's possible to just PC water cooling parts for cooling this motor controller the requirements are as followed: https://www.overclockers.co.uk/magicool-dcp450-12v-dc-small-form-factor-pump-and-reservoir-wc-025-ma.html this does 450l/h therefore it does 7.5l/m therefore meeting that requirement. I wasn't too sure about the radiator would you just go for a triple rad to ensure that it's cooled adequately? https://www.overclockers.co.uk/mayhems-uv-white-tubing-3-8-1-2-13-10mm-tubing-1m-wc-11a-mh.html For coolant what would you guys recommend? I need it to operate to -10C Also what fittings would you recommend? Thanks
  10. Hey everyone long time no post, anyway have a look at what I've been working on :)https://youtu.be/_3N7rebg0Ew

  11. Has anyone had experience with 200+V battery packs made from 18650 cells? I need to construct one for a project and I was wondering if anyone has any pointers if so could they DM me? Thanks.
  12. I want to be able to drive a bipolar stepper with a l2393d I also want to use the stepper library build into the arduino IDE(I think) However I don't want the function to be blocking so I want to be able to interface with the arduino whilst steps are occuring. I was just looking into the stepper.cpp files and I am a little confused with the follow syntax: void Stepper::setSpeed(long whatSpeed) { this->step_delay = 60L * 1000L * 1000L / this->number_of_steps / whatSpeed; } to drive the stepper motor there needs to be a certain stepper delay (as far as I know) so I was just wondering if someone could explain the this-> syntax to me as I am not familiar with it. if (this->pin_count == 4) { switch (thisStep) { case 0: // 1010 digitalWrite(motor_pin_1, HIGH); digitalWrite(motor_pin_2, LOW); digitalWrite(motor_pin_3, HIGH); digitalWrite(motor_pin_4, LOW); break; case 1: // 0110 digitalWrite(motor_pin_1, LOW); digitalWrite(motor_pin_2, HIGH); digitalWrite(motor_pin_3, HIGH); digitalWrite(motor_pin_4, LOW); break; case 2: //0101 digitalWrite(motor_pin_1, LOW); digitalWrite(motor_pin_2, HIGH); digitalWrite(motor_pin_3, LOW); digitalWrite(motor_pin_4, HIGH); break; case 3: //1001 digitalWrite(motor_pin_1, HIGH); digitalWrite(motor_pin_2, LOW); digitalWrite(motor_pin_3, LOW); digitalWrite(motor_pin_4, HIGH); break; } } this is the sequence to make the stepper motor "step" so I what also I'd like to know if you do a delay say every 20ms would that produce a similar control? in the header file it references this too: unsigned long step_delay; // delay between steps, in ms, based on speed Thanks
  13. I have an engineering project at university that facilities the use of CAN for some of my control systems I was just wondering if anyone on here has any experience with it and could direct me to a site to perhaps learn it.
  14. I just have a question regarding xbee and whether it works with three arduinos, one that will be in direct communication most of the time which will be Tx/Rx and then another one which will be used intermittently but it should have priority over the "arduino 1". So two "remote controls" with one master arduino. i.e two xbees talking to the same one which will be fitted on a mega.
  15. https://www.adafruit.com/product/2078 I've been looking into this for a project for a remote control system, I need the system to be water resistant so I was wondering how easy it is to desolder a micro usb connector from a board similar to this so that I can route the connector to where I need it in the internals of the box that will house the electronics. I was thinking of 3D printing a grommet and then spraying it with I addition I want to replace the power switch button to something more substantial like this: https://docs-emea.rs-online.com/webdocs/1587/0900766b81587626.pdf
  16. werto165

    Do google have a system for getting paid for re…

    its vunerablity reward program not sure if that applies for normal software based things.
  17. werto165

    Do google have a system for getting paid for re…

    well signing into a brand new google account (on that device) without having to use your linked phone number to that account is pretty big isn't it?
  18. Do google have a system for getting paid for reporting bugs? I've found something wrong with new devices breaking the phone number authentication code prompt. 

    1.   Show previous replies  1 more
    2. werto165

      werto165

      well signing into a brand new google account (on that device) without having to use your linked phone number to that account is pretty big isn't it? 

    3. DrMacintosh

      DrMacintosh

      As far as I'm aware, they will only do that for security flaws. 

    4. werto165

      werto165

      its vunerablity reward program not sure if that applies for normal software based things. 

  19. get the xbox play anywhere title I'm pretty sure that comes with a code you redeem on the microsoft store.
  20. stepping on a graphics card made of grapes definitely can let out a little wine.
  21. werto165

    No one is even getting close to beating your 1:…

    didn't actually make it work totally. I just ran it through the IDLE, there was just some inconistencies in the use of spaces and tabs so I had to de tabbify it. python is so fuckin weird.
  22. werto165

    No one is even getting close to beating your 1:…

    fucking worked out what was wrong with the python program. First it was complaining about the use of tabs instead of spaces for its indentation. Then another issue arose with python, because it's a newer version and the program that I was trying to run was an older version of python they've updated the print command so it's no long print 'hello world' it's print('hello world') so I had to change every instance of that, such fun!
  23. werto165

    No one is even getting close to beating your 1:…

    haha,slow and smooth tempted to go back for the end.
  24. I use a glass bed and use mod podge haha. that way I only have to use my heated bed at 42oC with PETG and I have zero issues with adhesion that way. My Anet a8 if you can call it that still haha.
  25. No problem, I think I'm going to have to modify another marlin config anyway for my final project so I might as well do mine whilst doing that too. I think I could fetch most of the parameters that I got from G-codes anyways, i think it's just steps/mm for the axis I changed and then did an auto PID tune, but it's been so long that I don't remember everything I changed. Perhaps uncommented out a specific line for my graphical interface as I remember that being awkward at the time.
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