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How to save an oiled penguin (with knitting!)

Biologist Jeremy Gray explains how penguins are cleaned up after the New Zealand spill: First the penguins must be warm and happy. Most are kept overnight before washing, as it is very stressful and they need to get their strength up. Then the birds are brought into the cleaning room and put on the table. Normally detergent is used to clean wildlife caught in an oil slick.  But the fuel oil that's spilled from the Rena is really thick, so we first rinse the birds with canola oil, sold as cooking oil at the supermarket. This helps soften the fuel oil and get off the really thick stuff. Then the penguin is washed multiple times in 25L basins of warm water - about 41C, to match the bird's body temperature - with 100ml of dishwashing detergent in each basin. We use specially imported dishwashing liquid that's the best for the job. We change water four or five times. One vet holds the bird, while the other scrubs it. We have toothbrushes for the delicate bits. Once the oil is gone, the bird gets a final rinse in warm water only, and is then checked for any missed spots, and the detergent is washed off. It takes about 45 minutes to an hour for each bird to be washed. The birds are then taken to a clean room and put under heat lamps and blowers to dry. The clean room is strictly oil-free - no-one who has touched any oil is even allowed in, in order to prevent recontamination. Once clean and dried, the birds are kept in a water tank until healthy enough to be released. And swimming in clean water lets them preen their feathers back to their natural condition. During my shift - we're only allowed to work eight hours - I helped clean three penguins. And as I was sent home they were gearing up to do the rest. At the time there were six dirty penguins (seven until one died before cleaning), seven clean penguins, one clean seal and two clean shags. More penguins and seals have since arrived. ------------------------------------------------------------------------------------------------------------------------ Now for the knitting... The penguins are in danger from the cold (they're penguins, duh!), but they do need jumpers.  A full-body woolly jumper stops them preening contaminated feathers  and ingesting the toxic oil. Volunteers have been using this pattern from Skeinz.com and knitting jumpers to keep the Little Blue penguins safe. So far, I have only seen photos of the jumper being worn by stuffed toys - if you come across one being used for real, could you let me know? More links: Oiled Wildlife Response Jeremy Gray's Flickr (the original source of the penguin photos)

Topic by Kiteman    |  last reply


Doorbell- bypass jumper? Help!

Hi all, I have a wireless Heath/Zenith doorbell. It has a wireless button (battery) and plug in doorbell chime. It is model SL-6166, very common design. It works fine with the wireless button, but I am working on a different project, and need to figure out how to "manually" use a jumper wire on the circuit board of the chime itself to make it go off. I need to know how to trigger this chime with a jumper so that I can connect 2 wires to the chime from one of my home automation devices (an I/O Linc) so that the home automation can trigger the chime by sending a "closed" or jumper the two points on the chime, to make it go off. For this project, I can't use the wireless doorbell button to trigger the chime. There is a good picture of this board at: http://forum.allaboutcircuits.com/attachments/wireless-doorbell-sl-6166-rcvr-cu-jpg.37346/ That is someone else's post with a different question, but it is the exact unit I am trying to figure out. I don't have enough technical knowledge to know where to jump this circuit board to make this door chime go off manually. I hope one of you can please help me do this? Thanks in advance!

Topic by nt6    |  last reply


Help to Knit a Moustache design into a jumper.

Hi there. Can anyone help me create a template to knit a moustache into a jumper? I need help! Thanks

Topic by miss_purl    |  last reply


Where to find samples of jumper cable online?

Is there any website that gives out samples of jumper cables or just normal wires for use with the arduino? For some reason I am not able to order anything online since the past month so I'm searching for samples, Thanks

Question by vishalapr    |  last reply


How to replace an SMD inductor? Answered

I have an 2gen Ipod shuffle which I burnt. Now after a long while I found that an inductor cas destroyed. How can I find it's value?or Can I put a jumper instead?

Question by theVader75    |  last reply


Parkour

So, beginning of the third day of learning Parkour. However, years of "Hardcore Tag" seem like the same things, just higher landings, instead of more effectively rolling. Anyways, Can someone point me in the right direction for parkour? I think I know how to roll, however Im not sure. Tips on vaulting and speed vaulting? How about after I vault, I have a 6-10 ft drop. Do I roll? How do you roll from high up? Do you do a landing, then crouch to roll? How can you become to have a smooth roll? Tips on catleaps? Where is the best place to practice or try out parkour?-RoAr

Topic by PKTraceur    |  last reply


Can you zap a 19.2 V drill battery using a jumper cable from a car battery?

Can you use a 12V car battery to resurrect a dead 19.2Volt drill battery

Question    |  last reply


Help Making Tattoo Lab Power Supply Jumper / Converter + pic

This is what I'm talking about. can you see it?  it's the first thing that comes up on google image search when you type in "lab supply jumper." It's so you can plug in a tattoo machine and foot pedal into a lab power supply.  theoretically I get how it's working.  The foot pedal is what interrupts the circut.  when you press the pedal down, it makes contact and completes the circuit.  So, the machine needs to be routed through the pedal before getting power from the power supply (versus plugging the machine directly into the PS itself.  Cause then you'd have to turn the PS on and off to get the machine to work or turn off). So, I'm assuming that's why there is a cord going from the "machine" 1/4 terminal to the "foot pedal" 1/4 term, right?  Then the pos and neg banana plugs go into the power supply. specifically, my question is this:  do I have to solder to make this?  or can I just twist wires together?  and can I buy everything I need from radio shack, right?  I'm pretty confident I can do it either way, just need a diagram or something on how to wire everything. I'm also asking my brother who was an electrician before getting injured on the job- he's on disability now but may be able to help, too. =) It's gotta be easy to make, right?!?!  so help me do eeettt!!!  =0) thanks for any and all help!  Sarah ps- I attached a pic of the power supply I have so you can see it as well. and for the record, my tattoo machine is RCA not clipcoard, but goes to a 1/4 male mono all the same.  As well as my pedal. k, thanks. ;0)

Topic by crumpitt    |  last reply


how do i solder a perf board?

I got a perf board for Christmas but have no i idea how to solder components together. i know how to solder the components on the board but i don't know how to connect them. do i use a jumper and if so how do i use that? isn't a jumper kit just some solid core wire? i have some .032 inch diameter copper wire from a transformer and i was thinking i could use that instead of a jumper?

Topic by DELETED_DELETED_kruser495    |  last reply


The what-I-got-for-Xmas thread

Hand knitted jumper, in special container ;-)

Topic by steveastrouk    |  last reply


flying steamers

Helicopters, planes, hovercrafts, harriers, jumpers are all for here. lets see e'm all.

Topic by paper clip man    |  last reply



Samsung screen flicker issue Answered

I own a Samsung LN40B530P7F the screen flickers and would like to know the jumper wire location to cut.  Thanks

Question by rickiedwalker    |  last reply


Eagle design question? Answered

Hey- im trying to design a single sided ,mostly smt board in EagleCAD, but I am having some trouble. I want to make the program to alooow bottom side jumpers, but have them always terminate on the top layer (so pretty much jumpers underneath the board). I have some pads or header pins pointing down, but the wires usually connect to those because pads are on both layers.. any way to fix this?  I really would not like to manually route every trace myself.. Thanks!

Question by astroboy907    |  last reply


what is the safest type of welder?

Exactly what the title says i know they are all dangerous but which is least dangerous and what about those homemade ones with microwave transformers or the one with batterys and jumper cables

Question by BIGHAIRYDUDE    |  last reply


How do I make a P.C. DVD drive with the original Xbox? Answered

I am in need of the proper jumpers and pin out of the proprietary Xbox cable.

Question by squeej84    |  last reply


Begginer electronic projects

Here, I will upload project schematics for different simple breadboard projects. For these projects you will need a breadboard, jumper cables and different electronic components, such as LEDs, potentiometers, and more. Thank You!

Topic by Detectingdragon777    |  last reply


What are motherboard pin connectors called? Answered

What is the trade name of those grouped pin posts you see on motherboards - the ones you set CMOS settings with using jumpers.... The kind that the front USB cable plugs into. Under what name can that be looked up commercially, say, in a parts catalog?

Question by Cheyyne    |  last reply


why does the battery measure 19v when I use a laptop brick to charge via circuit instead of 17v? Answered

Reason for my question,   my jump starter circuit board  which i think it takes 17v but I am using a 19v laptop PSu to power it, with a 12v sla but when I check the battery voltage it is showing 19+ volts, why didn't the charger circuit lowered the voltage and regulate to 13.7 or 14v? reading 19+ probably not good for the test SLA ? can i use multiple diodes in series  to lover my input 19v to exactly 17v dc will this make this charger circuit work properly, I have tested two different brand same reading. what gives? thanks Al

Question by celalboz    |  last reply


Schematic and PCB layout

I saw a schematic from http://makelifeeasy.yolasite.com/ this is the schematic design http://members.misty.com/don/linefl.gif and i tried to make a PCB layout and this is what i came up with the design http://img825.imageshack.us/i/circuitz.jpg/ is the layout correct? the blue line will likely be a jumper wire.. thanks in advance for the guidance.. =]

Question by gameshark888    |  last reply


I need to replace the end of dell inspiron 2650 power cord. There are 3 terminals. What goes to the third terminal?

I understand on a pin connector that the braided wire is ground and the insulated wire goes to the pin, but I'm not sure if the 3rd connector on mine was jumpered or to which one wire. It broke to badly to be able to tell on the old one.

Question    |  last reply


Will the TTL pins on this GSM module be connected directly to AT89C51 microcontroller?

I plan on using this GSM module with an AT89C51 microcontroller and was wondering whether I needed an extra MAX232 chip since the module has Rx and Tx jumpers broken out. Are they TTL? Could they be directly interfaced with the microcontroller? I have circled the pins in question in the picture. 

Question by r5sb    |  last reply


power supply to arduino

Actually i am trying to make a web connected robot after seing it from instruct table.com the wiring skeem which is shown in it is :- they are powering the arduino with a 9 volt battery from the connector and running the servos with the 4AA batteries so i also done the same thing but when i done it then an error starts comming while uploading the programe on the board so i contact the manufacturer of the board so he told me that your chip has got fried and if you further want to protect your chip so set the jumper before providing external power supply but on instruct table they directly have done all the wirings they does not have told of jumper and all. as i am really new to arduino i does not know how should i set the jumper.so please help me out..........

Topic by armaghan rehman    |  last reply


can you give me understitching directions for dummies? im having a very hard time getting it..?

Im putting a pocket in a jumper and it asks for understitching. apparently i have a mental block and i have not been able to understand any instructions i have found. can you simplify it to step by step of the actual process...

Question    |  last reply


usb enclosure hack

Current inventory: 2 Seagate ST340015A IDE hds (40 gb each) 1 Rosewill External usb 2 ide enclosure (pl2506 controller chipset) 1 40 conductor ide cable (mobo-slave-master) soldering iron/solder way, wayyy to much free time. OK, given the above items, is it possible to run both drives at the same time from the one enclosure? Fitting inside the enclosure is not an issue. So far, I have removed the original ide cable the came with the enclosure controller. And, installed my own ide cable. The only drive that is detected is the one jumpered as master, at either location on the cable(master vs slave). No matter what the other drive is jumpered as(slave, cable select), it is not detected. I tried setting both as master and neither are recognized. I have run out of ideas... suggestions would be great. And please dont suggest getting another enclosure. IM CHEAP!

Topic by danman1453    |  last reply


Eyewriter 2.0, Urban Survival Kit, Emergency Rescue Gun

The Eyewriter 2.0 Urban Survival Kit Emergency Rescue Gun 3D Paper Snowflake Magic Photo Cube Adjustable TV Oscilloscope Eggnog Recipe Schoolhouse Rocks Recycled Lumber Sidewalk Utensils for Kids Tricky Wine Bottle Puzzle Daily Gift Giveaways Featured Author: caitlinsdad Adult Johnny Jumper

Topic by randofo    |  last reply


Problems with my arduino mini shield

So i built an arduino mini shield for displaying numbers(i used the 4511 bcd to 7 segment decoder ic ) using only 4 pins excluding v+ and v-(power).It seemed to work well for while but later when i tried displaying 0001 ( 1 in binary) ,it suddenly stopped working or some all the segments got dimly lit . .Also if i plug it into the breadboard and connect some jumpers to the pins of the arduino(+5v and gnd) ,it seems to work fine,however when i plug it directly into the arduino,setting pin13 high and the gnd pin near it ,it does'nt work properly and all the segments glow dimly.The control pins for the digits are pin 12,11,10 and 9.also when i plug it into the breadboard and instead of connecting the pins with jumpers to +5v and gnd of the arduino,if i connect it to pin 13(HIGH) and the gnd near it it displays only 8, also can't i use pin 13 being HIGH as 5v' s? WHAT AM  I SUPPOSED TO DO?

Question by Strontium    |  last reply


Armtronix 4 Relay ESP32 board

I have received 4 Relay ESP32 based wifi board.I am referring the instruction on GitHub to setup the device.As I power on the device I see the wifi source with Armtronix-xxxxxx as mentioned in the pdf document. However I do not see that visible every time. It some times appear and as I try to configure by clicking submit button, it just goes off. I have not modified default jumper positions. Also I do not see any explanation about jumper positions in the document Question:2 Normal ESP32 dev kit, we can connect using micro usb cable and connect to the board using ming32 shell. I tried connecting but it does not connect, is it possible to connect this way or always have to use the Arduino IDE only?Even after multiple restart I do not see it and some times it suddenly appear briefly. Appreciate any one has any clue about it? /Hp

Topic by hetal.panara82  


Why this led circuit doesn`t work? Answered

Hi everyone, you see build this infrared-led circuit for a school project (am 16 and not in america so sorry for missespells, like that, pretty sure that missespell is not the word) This are the parts: Breadboard 3v Led 3v Ir receiver (with 3pins) Switch Jumper wires Can please tell me why doesn`t work??? What i miss?? Above some pictures.

Question by Ik0    |  last reply


Installing a new processor.

Hi! My name is Kerry. I have an HP Pavilion a1410n PC. Where can I get a free manual for my (Asus A8n-LA GeForce 6150 LE Socket 939 mATX motherboard ? I'm trying to replace my ( AMD Athlon 64 3800 ) processor with a ( AMD Athlon 64 x2 4800 ) processor, and need to know if there are any jumpers I need to change. Thanks for your help in this matter. Sincerely, KC2Z

Topic by kc2z    |  last reply


I updated my BIOS and since then my pc hasnt booted, any way to reset to factory settings?

I updated my BIOS on my XP sp2, p4 motherboard, and it hasnt been able to boot eversince. any way to reset it? i have tried to remove the jumper and put it in the other 2pins, and reset BIS credentials, then removed it for 2-3days along with the BIOS battery and stff nothing works. Am i missing out anything?

Question by ankur2893    |  last reply


Flickering tv screen on Samsung 40”

My Samsung LN40” has been flickering for a week. Progressively worse. I read on one of your posts about cutting a jumper wire JP825/845 on the Samsung 46/55” but when I took my tv down and removed the back plate those wires don’t exist on this model. I’m trying to locate the correct wire to cut for my specific model. I’ve spent hours on the phone with Samsung with no feedback. Please advise. Thank you

Question by RobertH555  


subwoofer installation? red wire, blue wire?

I need help with a car subwoofer, i have a friend whos red wire went, and doesn't have a power antenna akak a blue wire. his red wire went, its a 2000 buick and the cars are notorious for that issue. i have it on a switch for the 12v and i have a jumper from the 12v to the remote so when the switch is flicked the remote and 12 v are powered. is there an alternative wire to connect the remote to besides the red or blue?

Question by slimguy379    |  last reply


How do I "unbrick" the Electronic Brick shield? Answered

I'm trying to connect external sensors (in the picture below - 2 tilt switches), to an Electronic brick shield like this (see picture): I extend 2 buckled plugs from the shield with male-to-male headers. As far as I can understand from their cookbook - white supplies gnd, red gives +5v, and black is the signal - so I take the gnd and +5v from *one* of these cables and connect them to the breadboard's -/+ busses. Black goes to the switch (and to gnd via a pul-up resistor). The second switch takes +5v from its plug's red line (could also take it from the bus - but it looks neater this way), The other side of the switch goes to the black line (yellow jumper). This setup simply turns off the Arduino (short-circuit?). Pulling out the buckled plugs turns it on again. This tilt switch setup is pretty simple (I've tested it without the Electronic brick shield - sending the inputs from them to LEDs - and it works fine). I've also tried "unbricking" the LCD brick itself (That's what I'm really after) by sticking jumpers into the holes in the bus cable (according to what I've gathered from the Electronic Brick cookbook), and I couldn't get it to show anything or turn on the backlight. Is there some voodoo I'm missing here? Thanks.

Question by thedod    |  last reply


Connecting Peltier module using an Arduino

Hi Guys, I am a beginner to Arduino and I started building the circuit to control a Peltier using an Arduino following below article. I connected the circuit following the instructions and installed the phone App as well. but the circuit is not working.https://www.instructables.com/id/Smartphone-Operat...Then I tried connecting the Peltier to Arduino using a simple circuit and a code.int p=12; void setup() { pinMode(p,OUTPUT); }void loop() { digitalWrite(p,HIGH); }In the circuit, I connected the positive (red wire) end of the Peltier to D12 of Nano Arduino board and the negative end( black wire) to the negative end of the 6V battery. Then I powered the Arduino board by connecting Vin(Arduino) and battery(+) using a jumper wire. The GND pin of the Arduino was connected to the battery(-) using a jumper wire.But still, the circuit is not working. Is it because of the lack of current provided by the Arduino to Peltier? Is there a way to make a circuit with Arduino and Peltier? If I connect the Peltier through a Motor driver does this work? If so please guide me on how to connect the motor driver to my circuit to make the circuit working.This is really an important project for me and due to lack of my knowledge in this domain, I'm struggling to figure out a way of making the circuit even after doing a lot of reading. If someone could support me, it would be a great help for me.

Question by Indee1985    |  last reply


Passive Infrared Detector (PIR) Issue

Hi folks.  I have a 6000 Series PIR originally manufactured by GE security.  The sensor is wired to a OMRON MK2P-S 8 pin relay.  The relay controls an audio alarm. Everything worked fine for a while but now it no longer triggers the relay, despite the LED indicating it should.  I can physically disconnect the COM connection and it will force the relay to trip and perform the desired alarm message.  The voltage to the PIR is 13.5v (specifications indicate 10v-16v is the acceptable range).  I have set the jumper for 2 and 3 pulse with no difference in behavior.  Any troubleshooting ideas?  Thanks in advance.

Question by mhammer99    |  last reply


CDROM stepper motor problem with movement

I have been having intermittent problems with my cdrom stepper motor. I had a four pin motor soldered to a bare copper wire. I used the pins not the little ribbon cable and I left the ribbon cable attached because I figured, as soon as I snip it off I would regret it later. The other end connects to a breadboard that is in line with the stepper input to the EasyDriver motor controller. I have been using GRBL controller on my PC and when I tested it the first time in a vertical position it would just wobble around, not moving up nor down. I thought the stepper motor was bad so I got another one. The second was wired the same way, 4-pins, and it worked in the vertical no problem. Then later, while working on the rest of my project the second cdrom motor that was working did that same wiggle without moving up or down. I realized that the solder connections were very close together and that two pins were electrically connected. I modified the wire to basically a homemade male to male jumper wire. The extra pin made the room I needed to unsolder the two pins. Once again the motor worked up and down with no wobble. I have done nothing to modify the cdrom stepper any further and went to test my motor today after a couple weeks hiatus and once again, wobble with no up nor down motion. At this point I am stumped. I have reason to believe that my solder skills are lacking and that my homemade jumper has broken internally inside my shrink tubing where I cannot immediately see it but If anyone else has had this problem and knows how to rectify it please let me know. I hope there is enough info here laying out my problem and that someone can lead me in the right direction. If it also helps, I have checked my pin out and I do not feel it is backwards or crossed. I checked the resistance between the four pins and the end of my "jumper" and is approximately, 40, 20, 40, 100 ohms for A-, A+, B-, B+, respectively. I am really not sure what these number would mean but my buddy told me to check the continuity from end to end.

Topic by dankozi713    |  last reply


How to make a large LED chase effect?

I am looking to make a Xmas jumper with an LED chase effect to mimmic the snow falling.  I am having difficulties in deciding which is the best way to do this. Essentially Think of having 8 strings of 8 LED's (to make it simple) and each string will have its own chase effect running.  I want these to be independent of one another, I.E. I don't want a constant LED line running down the jumper. Now I have thought of two ways of doing this via Arduino:- 1) Simple Method - Using the ATMEGA328 to run each string of 8, providing its own running time and speed. 2) Difficult Method - Use a grid where one ATMEGA328 can run a 8x8 matrix.  This would require some transistors at each row and column and fancy code to produce the right effect. Disadvantages of 1&2 1) Lots of wiring, 8 ATMEGA chips and power supplies 2) Unsure if this is possible, obviously I can switch quickly but to the eye would this even be visible.  For example if I wanted to power column A and row 1 and simultaneously power column D and row 5... would this power said LED's and also column A row 5 and column D row 1, all at the same time? Any help would be greatly appreciated.  If I have overlooked any other methods, please feel free to mention them. Thanks Mo

Question by mokhaddoumi    |  last reply


Set of dome tweeters (Too high wattage)

I have a set of dome tweeters that ran grwat on an old amp i had, thing blew out a few years ago, and just barely runs through another amp with the crossover and woofer. there is some jumpers in the crossover that say Tweeter attenuation -4dB stock setting --- -2dB 0dB Just as i put it right there. I want to know what attenuation means and how i can use the same amount of power into the tweeter, but make it louder. (It's pretty quiet.) Right now it is set at -2dB. Except the dB and numbers are lined up.

Topic by Yerboogieman  


PIR alarm somehow works WITHOUT PIR attached

So I was playing around with this instructable: https://www.instructables.com/id/DIY-Motion-Sensor-Alarm-System/ and it works great, I made it on a bread board and when I unplugged the PIR to switch a jumper, I noticed that the LED started acting as a sensor! That is, when I got close to the bread board, the LED would light up and the alarm would go off, it would stop when I moved my hand away and start again when I put my hand back... This may be a stupid question, but I am really curious how this works!

Topic by emikayee    |  last reply


Please help me / arduino

I know this is a stupid request, but can someone please code for me the movements of the robot? I will attach a video on how I want it to move. I will only use motors sg90, jumpers, and arduino but I need the arduino code.So I want 4 things to move, you can see all of them in the video. I will then connect it to my computer and use my keyboard for movements. You are free to put any keys you want to control it. Please help asap. This project is for tomorrow for my school. That's why I don't have the time to learn arduino myself right now, if someone could PLEASE help me

Topic by Lexard    |  last reply


Fixing a 5 character seven segment display clock

This is a count up race clock that fell due to high winds and has stopped working. It is a springco athletics model 2710A. I have already tried respecting and reconnecting all the non soldered pieces of this display. The main chip on the board is a PIC16F887 with 20 pins. Each display is connected by a single ribbon cable with 20 pins and there are jumpers on each display labeled 1-6(presumably for the character placement in the display). If I cannot find a way to fix the current hardware I would like to replace the control board with an arduino that can do the same thing but I do not know how to wire the display to the arduino nor what model to use. Any suggestions are welcomed.

Question by Tsall1698    |  last reply


Run a laptop off of 12 volts safe?

My laptop battery is 10.8 volts. The charger I assume inverts ac to dc current to charge the battery. I also assume that if there are any ac voltage requirements  in the laptop it must have an internal invertor from dc back to ac. The charger input is 110-240volts 1.7 amps. The output is 18.5 volts 3.5 amps. My question is why can't a 12 volt source like a jumper box be used to run the laptop, when the battery is low, through the port that the charger is plugged in when charging the battery. My thinking is that the battery being 10.8 volts dc is charged with up to 18.5 voltsdc then it would be safe to plug in a 12 volt battery source. Thanks for your time!

Question by unclebobtech    |  last reply


My First Arduino Object Avoiding Robot!!!

Hey guys I am making my very first robot and have been researching for a while now......i have the parts but i am blank on what to do with them. I have:  2 DC motors 1 Ultrasonic sensor Arduino Uno 1 L293D (IC) 1 breadboard jumper cables 1 mini servo a power source for 4 AA batteries Robot chasis I want that the robot goes front and stops when object is near then looks right and left and moves accordingly..... Now keep in mind that i have 2 DC motors and NOT SERVOS so how should i program this or connect all the parts so that it works......PLZZZ do help its urgent.

Topic by mani_97    |  last reply


how do i charge a 6vdc battery when i get varying dc volts between 1 and 7?

I have a moped that i want to make led blinkers for it.it gets its power from a magneto so i get ac current.i hooked up a bridge rectifier so i now have positive and negative terminals that i want to hook up to a jumper bar or something so i could run different wires to it.i thought that i should try and work the lights off of a battery. however it puts out between 1vdc when im at idle and 7vdc when im at full throttle.how can i charge my battery with out too much damage

Question by elting    |  last reply


I need some PCB help

I'm trying to help a friend make a PCB for a project of his, but I've never made one myself. Using westfw's design rules in Eagle Free Edition, the board is riddled with jumpers, but there are only three with the default-width traces. I ask you, O wise Instructables community, what should I do?We were going to use the iron-on laser printer resist method, but that won't work if it is too sloppy to make thin traces. How thin can the traces be made with this method for a beginner? We also are considering using this film, in hopes that it will be a little easier to use...does anyone have experience with it?The other option that comes to mind is transferring everything to ExpressPCB instead of Eagle, in an attempt to make a bigger board that could use bigger traces.

Topic by CameronSS    |  last reply


Powering up an old IDE hard drive externally?

How can I make an old 2.5" laptop IDE hard drive spin up with out a computer? I tried connecting 5v to pin 42 (+5 VDC (Motor)) and 0v to pin 43 (ground) but the drive does not spin up, it just draws around 270mA from the supply. How can I get the drive to power on? do I need to short out some other pins too? What about the jumpers? I am guessing it needs some sort of "power on" signal but I am unsure how to give it this. I am NOT connecting this to a computer BTW, I do not need to read any data. Just for the motor to spin up to have some "fun" with. Thanks.

Question by Alex1M6    |  last reply


How can I re-align the screen on a TI-85?

I obtained a secondhand TI-85 for a dollar today. It didn't power on, so I removed all the batteries and put a jumper across the contacts for the memory backup, which cleared the memory and reset everything to default. HOWEVER, The LCD seems to be calibrated 4 pixels off. When anything is entered into the base screen, the left four pixels are off the display, leaving the fifth column of the character to be nudged up against the left side of the display. When I graph something, however, the display is centered. Any ideas what could be causing this? A second "Reset All" didn't help. I'm a TI-83 user, so I'm not familiar with the TI-85 interface.

Question by CameronSS    |  last reply


X-CTU not detecting xBEE?

I am trying to communicate between two xBEEs. one xBee is connected via the xBee explorer shield to COM9 in to my laptop and the other is conncected to the arduino uno via the xBee shield ( www.coolcomponents.co.uk/xbee-shield.html?gclid=CPf98dunz7wCFeXKtAodoHEA_g#. ) to COM 17. I am using xBEE Series 2. Now the xCTU detects the xBee connected via the explorer; however it doesnt not detect the one connected via the shield to arduino. It just says Arduino Uni (COM17) in xCTU. and whn I try to rest it it says 'Unable to open com port'. I have moved both the jumpers on the other pins on he USB side, but still no luck. I have tried all the combinations but it doesnt work. Can someone help me with this problem please? :(

Question by Bam Boy    |  last reply


How to change 12v outlet from always on to turn on and off with ignition

I have a 94 gmc sonoma sle 4.3L V6 and I wanted to make the outlets turn on and off with the ignition but I don't know how to do it exactly. I have 3 outlets which are always hot (have power), and I would like to be able to at least make them all turn on and off with the ignition. But it would be nice if I could choose which individual outlets I want to have on all the time and which ones I want to turn on and off with the ignition, this would be done with either a switch of some sort or have the ability to move the respective fuse over as if it were a jumper.

Topic by SLIMDADDYC    |  last reply