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  1. Steve Peart

    My First Circuit Board Design - Will this print out well for a transfer?

    @(*steve*) what do you mean by "be careful about how the line segments job"? Never heard "job" used as a verb before :)
  2. Steve Peart

    My First Circuit Board Design - Will this print out well for a transfer?

    I have created a newer design based on @(*steve*) 's suggestions. @BobK : The traces are now 0.66mm thick. Is this better? I had to make jumps on the board to make this all route ok, but that's fine. Let me know what you guys think!
  3. Steve Peart

    My First Circuit Board Design - Will this print out well for a transfer?

    For the protection parts of the circuit, I was referencing this: http://www.thebox.myzen.co.uk/Raspberry/Breakout.html#id8 That's where I found the circuit diagram for it. It's primarily used for GPIO pins that you are using as inputs, but the protection is supposed to work both ways. This is...
  4. Steve Peart

    How to stop a motor from running when it is physically stopped

    For this project, I wouldn't use a regular motor and consequently, the need to detect stalls. You would be better off using a stepper motor or a servo that does a 90 degree rotation capable of moving the weight of your lid. This would simplify the circuit substantially and you wouldn't have to...
  5. Steve Peart

    My First Circuit Board Design - Will this print out well for a transfer?

    Hello All, I am putting together a circuit board for a project that will plug into my Raspberry Pi with a ribbon cable to provide motor control for 3 separate motors using a hobby battery that's 7.4v 1900maH. I have gone through 2 other iterations, attempting to build it first with all jumper...
  6. Steve Peart

    Can 7.4V 1900maH battery positive lead fry Raspberry Pi if attached to ground GPIO pin?

    I suppose that's also possible, given the - lead of the battery was just as exposed as the + lead. I guess I'll go with that for now as the cause. Nothing else was loose on the board and other than crossing some lead with a screw driver on accident or something, it's the most likely case. I...
  7. Steve Peart

    Can 7.4V 1900maH battery positive lead fry Raspberry Pi if attached to ground GPIO pin?

    Here's the schematic I put together in Photoshop, I have no clue how to use actual PCB design software. This is how I have everything wired up currently, the blue squares are screw terminals for the motors, the resistor for the LED is just an image for reference, the stripes on it aren't what im...
  8. Steve Peart

    Can 7.4V 1900maH battery positive lead fry Raspberry Pi if attached to ground GPIO pin?

    So if/when the LiPo battery positive lead was crossing the ground line, then I WOULD be sending all that the battery has directly to the GND GPIO pin on the Raspberry Pi. I certainly plan to implement possibly some zener diodes on the parts that use input to the raspberry pi, but my only suspect...
  9. Steve Peart

    Can 7.4V 1900maH battery positive lead fry Raspberry Pi if attached to ground GPIO pin?

    I fried my raspberry pi somehow recently while working on my custom motor circuit that uses 2 L298N's for controlling the motors in my project. My source voltage comes from a 7.4V LiPo 1900maH Hobby Battery pack. While testing, I think i may have accidentally crossed the positive lead from the...
  10. Steve Peart

    Voltage Issue with Dual L298 ICs wired to Raspberry Pi

    I do have that and did prototype the circuit with a breadboard, and everything worked. The problem is that I started with that board using wires to make the connections, but it didn't work, and became a nightmare to debug because of the flurry of wires all over the place and relatively poor...
  11. Steve Peart

    Voltage Issue with Dual L298 ICs wired to Raspberry Pi

    Nooooooo! I am saddened. I thought I was really close. I do have some protoboard from another project that has no metal, just holes, which I could use with the copper tape creating a pretty clean looking board, but it's a lot of work for me given my n00b level. I guess I'll have to poke at this...
  12. Steve Peart

    Voltage Issue with Dual L298 ICs wired to Raspberry Pi

    Here are the photos of the board I took, I also re-constructed this circuit on my breadboard and it worked fine, re-tested that the voltages from the RPi matched what was expected. Pardon the really bad soldering job, I screwed it up three times and took it apart before I ordered the copper tape...
  13. Steve Peart

    Voltage Issue with Dual L298 ICs wired to Raspberry Pi

    Hello people, This is my first post here, so bear with me as I don't know the protocols and things you might need from me in order to get help with my circuit. Project: I am building an RC Tank with a turret that will fire nerf bullets. It uses a Raspberry Pi with a WiFi dongle in the USB...
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