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Handheld Pong & Invaders on the cheap (Arduino compatible)
Arduino Controlled ATX Power Supply
Tiny Wearable LED kit - 12 PWM LEDs from a reprogramable ATtiny85
Throwduino Basic - Light-Sensing Flashing Throwie with 1 Added Part - Now with Morse Code
Kid's Science Project - Reusable Hand Warmers
Make a High-Altitude Balloon Tracker (Arduino)
Is this what I need to buy please it says 6v - 9v on the back... :)
This looks awesome I like it very much, well done... :)
Easy Candy Floss (Cotton Candy) Machine from Junk
LED Dawn / Sunrise Alarm Clock, Nightlight & Security Light - Arduino Compatible
The green wire should be a high-impedance "sensing" connection, like an Arduino "input" pin so should not be any threat to your Ardu'.I put a 1K on that line out of an abundance of caution because that limits the current if there were any issues. However, it should be completely unnecessary.My only caveat here is that there are many makes and builds of ATX power supplies and although they should all conform to similar standards I have not made any attempt to test them widely. It is therefore just possible that _your_ ATX supply is different to those I have tried. I think the chances are very small, but if in doubt, put a meter on the pin, then ground it and measure the current flowing.Ugi
does the green wire have any voltage on it that would damage the Arduino thanks Dwight
Kid's Green Tech - Solar Garden Lamp Kit
Great!Glad you enjoyed it and thanks for posting such a kind comment. Did you take a photo of your machine? If you did, post it and there's a 3-month pro-membership for you so you can look around instructables for other projects you fancy without all those annoying ad's!Keep up those projects!Ugi
Thanks for all your work in creating the machine and posting the instructions, they're great guide lines to follow.I used a drill instead of a small motor and i got the locking torch lighter at Canadian Tire, they sell it as a mini soldering torch.I also mixed some crushed Jolly Ranchers to my sugar/syrup mixture and melted it before adding to the machine allowing the torch lighter to maintain the liquid state of my sugar.It worked great and tasted excellent. My kids and i loved it.Thanks again ?
Is this UK specific, or can this be used in the US as well?
Yes, you can, BUT..... I've heard a few saying if you try to connect some of the arduinos (R2 and back) +5V line, it can do damage to the circuit that switches from the USB +5V to the regulator +5V.. (haven't actually seen this myself.. Duiemilinova worked fine..) as long as you're not pulling too hard on the 2A standby (with an arduino? not likely.)
Nice build. Hope it sounds good, 'cos it certainly looks it!I may have missed it, but do you have a sound post? That's the bit of dowel that sits under the bridge and braces the top against the bottom. It's the most important internal part of a normal violin for getting a decent sound. It also stops the top from collapsing under the pressure of the bridge.Your top looks narrower and stronger than a normal violin, but it's also flatter, where a violin gets some strength from being arched on the top and bottom. I would still expect that you needed a sound post both for strength and particularly for sound quality.Ugi
Laser Cut SphereBot
Great job!One question: can i boost the voltage from the atx +5vsb to 9v using a LM2577 DC-DC Step up Power Module Adjustable Voltage Power Converter Module so i can power the arduino using the power jack (7-12v) so i can also use the usb connection without having to hack the usb cable (power) nor use the 5v pin ?
Thank you for your reply..is mi intention is to only power the arduino from the 5vsb, so i can still control the psu, and remain with a active normal usb connection, all other devices will be powered from the psu 12v rails.
Thanks Ugi! We've been on spring break so have had a little break from the project. I definitely had the correct programmer selected before, I'm not sure if there was something up with the chip. I bought some new chips and everything uploaded perfectly this time!! Some of the group are testing out the circuit today with the radio receiver, they may have some questions about decoding the data we receive.Maureen - maureen-selinal
Hi Ugi, I'm also part of the team sending a balloon 25km to celebrate the uni degree anniversary. We're currently trying to get the board and radio receiver talking and running into a few problems. The radio hears the board but when we try to send it to dl-fl digi to get read and parsed out issues arise. Do you see anything that immediately strikes you as out of place? Thank you,Jaren - pde25clicks
Hi again Ugi,Pretty early on I realised I'd accidentally ordered a 4mhz xtal and changed it for an 8mhz one, so I can rule that out :-)I'm using Arduino IDE 1.0.3, as per your 'ible recommendation. I have the 3 libraries you included in my 'libraries' folder and they are showing as 'contributed' libraries in the IDE. I'm going to send the output of your uBlox test script via PM, because I'm happy to say that it includes my GPS location :-)It looks like the GPS module is working, but as you correctly worked out, isn't interfacing with the sketch correctly. I'll continue to investigate :-)One step closer to getting a balloon in the air.Cheers,Steve
Hi Ugi, Thanks for the continued support, much appreciated. I've been doing a bit of work investigating the problems on my board but I'm no closer to making it work. 1) I ran an I2C scanner on my 328 and got the following :Scanning...I2C device found at address 0x42 !doneI've removed the other I2C devices and can confirm that this is the GPS card reporting.2) The two temperature sensors don't seem to be reporting on the I2C at all.3) There's no change in the output data on the RTTY, even after leaving the board outside for nearly an hour. Is the LED on D13 supposed to illuminate to report GPS lock? I'm sure I read that somewhere :-)I'm at the point now where I'm considering ordering a new 328 and populating a new board, just to rule out and track damage etc. It's frustrating, but hopefully I'll get something that works eventually! Cheers, Steve
*UPDATE* Turns out the sketch hadn't loaded properly, but seems to have now. How long did it normally take to get an initial lock on the GPS? I'm now getting my callsign though but still not getting any GPS coordinates or a valid time. It's either not getting a valid lock or there's no comms with the GPS card.$$DARWIN,0,198:96:72,99.99999,99.99999,0,99,99.99,88.88,9999,7.19,C3p0119*BF38$$DARWIN,0,24:59:58,9999.99999,-8888.88888,0,0,99.99,88.88,9999,9.99,82pFFFF*4201
Hi Ugi,I now have adequate carrier shift (you're right, had to play around with the voltage divider (I'm guessing the reference voltage has changed in this version of the NTX). I'm getting a readable RTTY TX, but with no useful data:$$-*/,0,24:59:58,9999.99999,-8888.88888,0,0,99.99,88.88,9999,9.99,82pFFFF*60EE$$-*/,0,198:96:72,99.99999,99.99999,0,99,99.99,88.88,9999,7.02,C3p010F*61A6CRCs complete ok but as you can see, I'm not even getting a valid callsign (should be DARWIN). I'm going to go through the code and see if I can work out what's going on, but in the meantime I'd appreciate any input from the master :-)Many thanks,Steve
Damn it, I'm getting a "stk500_getsync(): not in sync: resp=0x00" as well :-( Going to try it on a linux machine.
Well, I wait for the compilation to finish then press the reset button. Managed to get the code programmed by choosing a different programmer option. One of my LEDs now flashes away nicely. Tested it with a receiver and am getting what looks like RTTY, but seem to have a frequency shift of over 2kHz! I've checked the value of the resistors and they are what they're supposed to be so a bit of investigation is required.
Build complete (bar the pressure sensor, which may or may not follow). She's all ready for her sketch, which can wait for another day. This is the best instructable ever ☺
FYI: I bought a micro SD Card breakout and the pin configuration was different the the tracker board. Saved some weight using a smaller board, gained it all back with the green wiring needed to connect it ?
Hi Ugi,Our new chip arrived today so we have gone back to Step 3: Bootloading. We are using the breadboard method and are confident that we've wired it correctly and have selected the correct port. We've also successfully uploaded the ArduinoISP sketch to my Arduino UNO. However at no.10, when we "burn bootloader" we get the following error "avrdude: Error: Could not find USBtiny device (0x2341/0x49)". Would you have any idea of what the problem might be?
Thanks Ugi!Our new chip arrived today so we have gone back to Step 3: Bootloading. We are using the breadboard method and are confident that we've wired it correctly and have selected the correct port. We've also successfully uploaded the ArduinoISP sketch to my Arduino UNO. However at no.10, when we "burn bootloader" we get the following error "avrdude: Error: Could not find USBtiny device (0x2341/0x49)". Would you have any idea of what the problem might be?
Starting the build :-) #veryexcitedSteve - criticalmass115
Hi Ugi,Thanks so much for your very quick reply! We are sending a balloon up 25km to celebrate the 25th anniversary of our uni degree programme, so your tutorial has been so helpful.Yes, we are on step 6, uploading the sketch. We skipped step 3 as we were advised by our tutor to buy preloaded chip. We are using bought ISP shield, chip is assembled on board, see attached picture.Both red and blue LEDS light up when connected to laptop. I've tried uploading Arduino "blink" sketch and I get the same error.I've just re-read your tutorial and see your warning that that pre-bootloaded chips expect a 16MHz crystal so I suspect this is the problem. In what way would we need to adjust the code if this is the problem? - maureen-selinal
Hey Ugi. I used DirtyPCB.com. Cheap and cheerful but seems good enough for the job at hand. I actually bought a chip with the 8Mhz bootloader already installed. It was just another job I didn't have to do. This is the one I bought http://www.hobbytronics.co.uk/atmega328-arduino-8m... . Thanks for the pro membership, much appreciated. I have no doubt that I will be in touch with more questions soon :-)Cheers,Steve - criticalmass115
Thanks Ugi! Will give that go :) - maureen-selinal
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