KeyboardCowboy
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Everything posted by KeyboardCowboy
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Retired 8/22/2019, moo
Spoiler
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...well how bad was the corrosion? Citric acid is mainly used for dissolving rust (I had to look it up). I would shy away from using it on a pcb full strength. P.S. Acid and metal is not the best combo. A better solution (Jacked from ifixit) I personally use distilled water followed by a good isopropyl rinse (for pcb cleaning in general). I would get a wash bottle, and some anti-static brushes. Give your board a rinse down with the distilled water, agitate the surface of the pcb with your brush, rinse again, rinse with isopropyl, then let it dry (completely). This should help to remove any residual citric acid. See what others have to say, I'm just one cowboy *pew pew*
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Hi, sorry your having problems, I'm going to suggest you watch this, start to finish. If you follow all the steps in the vid and it still doesn't work, let me know. Edit: maybe skip to the 7:00 marker.
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Mk, ill byte, whats the application? After a bit of preliminarily research, I would focus on getting this to work, specifically the MPU6050_DMP6 demo. It may be a tad bit hard to follow, but as far as the acquisition of usable data, it looks like it should do everything (minus your velocity calculation, which I'm not entirely convinced ya need). I wouldn't even worry about the motors yet. From what I was able to gather, out of the box it gives you yaw, pitch and roll in degrees. Assuming this is part of a drone, you should be able to do some very useful things with those values. I might be missing something, but if you have your pitch in degrees, any change in pitch (delta pitch) could be divided by time, giving you a degree per second change in your pitch... right? map that to your second servo. The MPU6050 in the above code is set up to trigger an ISR (interrupt service routine) at a regular interval to grab the data from the MPU (I'm pretty sure), so that would be your time. (0deg - 2deg)/100ms (crappy example) -20 deg/s? depending on how many steps/degree your stepper motor is... (losses train of thought) I'm sure you see where I was going. Here's a list of stuff I was reading that might help. Any additional information you could provide might help. Let me know if this helped or just pissed ya off, ill be around.
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banned for riding a huffy.
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Banned, license, registration and proof of insurance. sir, where were you in such a hurry to get to?
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Budget computer thoughts.
KeyboardCowboy replied to mutazoid's topic in Laptops and Pre-Built Systems
https://www.ebay.ca/itm/Dell-Optiplex-7010-SFF-Intel-Core-i7-3770-3-4GHz-8GB-RAM-500GB-HDD-NO-OS/254331430855?hash=item3b3755a7c7:g:A5UAAOSwkGldVX0W -
Whats the other side of the board look like? see if you can pop it out, try removing the plastic knob on the front of the meter (carefully). For future the fuse is 20mm, 200V, 200mA Here is what I have been able to gather so far. based on the ME-550, it looks like the only thing holding it together is the range selector knob. Seeing as how close the batteries sit to the IC cutout (I labeled it wrong in the pic, not a uC) (see image below), there could be corrosion on the chip pins. The display could have also been affected by something. The traces are underneath, never hurts to take a look. There's a good possibility something 'shit the bed', leaky caps? dead chips? cooked resistors?, dirty pots?, hosed display?, lose wire?
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Sure, I guess *waves goodbye to anonymity* My pc's noting special, but here it is. Edit
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Banned for being inconceivable.
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banned for enjoying cult classics and clever hotdog related puns.
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banned for making confucius envious.
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banned for requiring an explanation. (its a photo editing thing)
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banned for to much split toning.
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Banned for being a dog.
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Here's another potential solution, vJoySerialFeeder. All the data gets dumped over serial at whatever baud you want, then it gets interpreted by the pc. I highly recommend checking out the documentation for it. It uses vjoy for all the controly bits on the pc's end (virtual joystick), and its Arduino 'friendly?'. I went ahead and ran a test just to see if it would work, and it totally dose, really well too. joy2key recognizes the virtual stick and allows for further control, I'm sure its supported by other mapping software too. @Hackentosher is right, your going to be limited by your controllers analog inputs. Something like this should help.
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I don't think the gamepad support for this would work for the op, unless he scales down to a 6 axis prototype. "Gamepad (32 buttons, 4 16bit axis, 2 8bit axis, 2 D-Pads)"
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Post Linus Memes Here! << -Original thread has returned
KeyboardCowboy replied to COCOBYTES's topic in Off Topic
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I have cold cathodes too. Mine have been going steady for years, yours should last more than a year. As far as an upgrade, I think the tubes are cool, if you want a change try the uv led strips, they are probably brighter. Now due to physics and what not, the leds are technically 'near ultraviolet', but thats pretty gosh darn close. Give ebay a try if you can't find them from a reliable distributor. ebay ad Edit: For 5.99 you can get a pack of 5mm leds, uv. If you had some cheap led case fans, you might be able to swap out the leds. 100 5m leds uv Edit: these look hackable, maybe don't get 'those' but something like that. It would brighten up the front and back of the case. 80mm 4 led clear fan Do mind the damaging effects of uv light, its not good for the eyes.
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Give this one a try, at 11.00 bucks, if it don't work, your not out much. lvds driver board Personally I would get a display kit though adafruit, its more expensive, but they have quality parts. disp 1 disp 2 disp 3 take a look
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Give this a read. Link
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Hello, off the bat, I think your idea is.... well, not good. BUT! I'm going to help anyway. I assume this controller is for a pc? yes? well, I'm not really sure generic drivers support more than 2 joysticks. How would you even use 4? like that seems counter productive. *shrugs* anyway, what I would do (since your joystick crazy) is build not a game controller, but a midi controller! here's why. Midi has a bunch of turny twisty analog things, some folks even use this for full blown flight control. Here's a link to get you started Good *jumps forward in time* Now what do you do with your midi controller? great question, I don't know.... But, I'm sure you could find a midi to virtual joystick program. Here's a link to get you started sweet! As far as assembly and coding? you have a long arduous journey ahead of you. Start small and get it working, then scale up. Remember, asking specific questions will get you specific answers. aloha
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I agree with the above, designing and building a keyboard from the ground up is more trouble than it's worth, unless there's a valid reason. Ie money and time to burn. Here's a short read if you want a kit Link Pretty sure Linus did a vid about this too, might want to check it out.
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Open a laundry mat, low maintenance and no staff. Maybe hire a financial planner or a broker.
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