Quadratic Equations on TI-84.

Hey, I'm in of person who has a patch for a quadratic equation for a TI-84. Thank you!

Posted by math hater 10 years ago


TI Calculator Help

I have the TI-84 Plus Silver Edition and I have some questions. First I need to know how to graph the equation (x is greater than or equal to y) Also I put the quadratic program on my calculator but it gives the answer in decimal form, how do I view it in fraction form or is that even possible??

Posted by thouse 10 years ago


Interfacing to a TI Graph Calc

I was looking at how to interface an lcd screen to a microcontroller and learned they have a 14-16 pin interface. Guess what I found out? An old Texas Instruments calculator I tore apart has a 14 pin interface on the lcd screen, with the first two pins being power! Just like on a regular lcd screen! I am going to atempt to interface my OOPIC to it! If this works, I promise you there will be an ible!

Posted by gimmelotsarobots 10 years ago


Free IC Samples: Good or Bad

Every now and then I order a sample of an integrated circuit from companies such as TI, Atmel, or Microchip. But can I get too many. If I order too many do you think they will catch on to my using of their free samples for hobby use and not research? I stopped ordering because I am afraid they might start charging me for all the chips I ordered. What's your opinion?

Posted by gimmelotsarobots 10 years ago


Programming in TI Basic

Just wondering if anyone else here programs their TI calculators using the built in language.

Posted by sardines454 11 years ago


TI-connect for calculator

I'm having trouble loading "TI-connect" on my mac so that I can write programs for the ti-84 on the computer. After downloading ti-connect, I click on it, and it seems to want to install it again. I've done the complete loop, repeating the download process about 4 times.  Do any of you know what to do?

Posted by Toga_Dan 6 years ago


Cable Ties

At present, I live in a flat I need to connect the indoor tv aerial in the kitchen to a set in the bedroom. This involves leading the cable around doors and possibly across the ceiling, to get to the opposing wall. Under normal circumstance, I could use cable ties with pins, but making holes is not allowed in the flat. I have been told that adhesive cable ties must help, but they appear very difficult to remove, and might leave stains. Any suggestions

Posted by anon_private 1 year ago


Tis the season (for cheap LEDs)

It's a good time (in the USA) to buy holiday lights with LEDs. To disassemble, and retarget, of course. Discount stores are a great place to start.Here's a string of 70 brand-new white LEDs I bought last week. Cost: $4 USD.

Posted by gmoon 10 years ago


MSP430 LaunchPad (almost for free)

Guys, For all you guys who are into microcontrollers......TI is trying to take over some lost market shares of Arduino and so on. You can now order the MSP430 LaunchPad development tool in the TI webshop for only $ 4,30 incl shipment worldwide!!! Check it out at www.ti-estore.com/Merchant2/merchant.mvc?Screen=PROD∏_Code=MSP-EXP430G2 More specs at the TI Wiki http://processors.wiki.ti.com/index.php/MSP430_LaunchPad_%28MSP-EXP430G2%29 Happy programming..... ;)

Posted by ton2303 8 years ago


Calculator IM

At my school we are required to have these TI-83 plus calculators for math. Of course we have classic games and stuff that we put on there, but we want to try to put an infrared emitter and detector on it so we could send IM's within the room to each other. Kinda like texting. Could anyone help us by suggesting ways to do this?

Posted by Jordo 10 years ago


How do you hang Christmas lights?

How do you hang up your christmas lights? On our fence I used zip ties, but when I went to put lights around some windows, I saw the Window christmas light frame but I didn't have the right lights for it and used Duct Tape. Any ideas?

Posted by Yerboogieman 8 years ago


could someone make an adaptor for my hot glue gun to melt zipstrips

I want to make an adapter for my hot glue gun to melt zip-ties that way i can turn them into filament for my 3d printer. just saying... If it could melt zip-ties and make filament why not use it to melt pop bottles? I could cut the top and bottom off a pop bottle and slice the sides up in a paper shredder then take the shreds and put them in  a hot glue gun to make the pop bottle into filament for my 3d printer. a little help please ? / what would I need to do to make this? I have the ability to print anything if someone could help design it. I wll share it with EVERYONE !

Posted by Tormentory 5 years ago


BLUETOOTH INTERFACING WITH 8051(AT89C/S51/52) PLZ HELP

Hello guruz, recently i bought n bluetooth UART module (http://robokits.co.in/shop/index.php?main_page=product_info&products;_id=354) RKI 1545 I tried interfacing it with 8051 using the 10,11 pin UART pins, using SCON register(mode1) baud rate 9600. But there is no reception or transmission. However the bt module is working fine. Passed the loop feedback test(joined theRx to Tx pin of module standalone....link established echo received on Putty on WIN7 and blueterm android app )   CODE: #include void ini()     // Initialize Timer 1 for serial communication { TMOD=0x20;  //Timer1, mode 2, baud rate 9600 bps TH1=0XFD; SCON=0x51; TR1=1; } void recieve()  //Function to receive serial data { unsigned char value; while(RI==0); value=SBUF; P1=value; RI=0; } void transmit()  // Funtion to transmit serial data { P2=0xF4; SBUF=P2; while(TI==0); TI=0; SBUF=P1; while(TI==0); TI=0; } void main() { while(1) {   ini();   recieve();   transmit(); } }

Posted by skumar112 5 years ago


Rope Faling

What would happen if you put a rope around the world and tied one end to the front of a house and one to the back of the house the held on to it and cut it on the other side (not the on your holding on to)

Posted by Slayer7 10 years ago


What is your favorite type of cheese?

C'mon, out with it!  What is your favorite type of cheese? I have 3 tied for first: Smoked Gouda, Feta, and Ricotta. What are yours?

Posted by kcls 8 years ago


Parts List for Shark run & Storm mountain

As above. I only really want the number of cross ties, feet of track and flexis.

Posted by The_Lost_Carrot 7 years ago


Christmas List!

'Tis the season to figure out what would make you happiest on the 25th of December this year! So, my question is, what is the one thing you want this year? :D

Posted by bumpus 9 years ago


Tis nice to find out now.....about raw cultivated mushrooms....

I just found out that is it unwise to eat many cultivated mushrooms raw. I finished up 3 pieces of pizza I had placed some sliced Oyster mushrooms on for flavor. If I don't sign in tomorrow morning, I am in the hospital :-) it is said that only sensitive people will be effected by the toxins......nice ! :-(UPDATE: I seem not to be sensitive nor particularly vulnerable to this toxin probably because I have ingested so many raw baby portabellas from salad bars :-)

Posted by Goodhart 9 years ago


Calculator Programs for Math

I've been working on some programs for my calculator recently and have decided to share them. I made these myself from scratch. If you want to modify go ahead just credit me. Don't sell them. And don't use them in math class if your teacher says not to. The programs are a follows: a quadratic formula solver, parabola solver, slope of a linear equation finder, and y-intercept finder. The programs work on TI-83's and TI-84's. If you have questions on how to use them or how to put them on your calculator please leave a comment!

Posted by sardines454 11 years ago


i thought about a fire in the sky. fun stuff (tis in my new video on youtube)

Check out what happens when you give me and heath a camera, WD-40, and a lighter.

Posted by twisted 11 years ago


Open-source how-to framework

I remember reading about an open-source how-to framework that was being created by people with previous(?) ties to Instructables. Does anybody know what it's called? Basically it was a global, unified structure for how-to's should be written. 

Posted by hughmorris 2 years ago


Maker Faire 2009: The Window Lady

Janay Rose, aka The Window Lady, was biking around Maker Faire with her load of beautiful hats, waist cinchers, and other bits of clothing made from reused ties. How awesome is that?

Posted by canida 9 years ago


CNC Router / Maker Workspace in NYC?

Hello all, I have some ideas tha tI would like to produce on a CNC router. I'm looking for access to one in NYC? Is there a maker workshop or some place that gives CNC classes? thank you

Posted by septemous 5 years ago


Pro Membership for Egypt

Hi I would like to have Membership Pro but when I tied to enter my credit card info, Egypt was not one of the countries listed in the country field. Can you please advice on how to become a member while I am from Egypt. Thanks

Posted by vbmsa 7 years ago


unstoppable energy

Hi there, Is there any power source that never be stopped?  Well, I am thinking of producing energy from the working principle of electromagnetic induction. it can be a charger, so no worries for short battery life (or maybe replace battery). I am lack of idea on how ti get it start.  Seeking for advice.  TQ.

Posted by brian lew 4 years ago


What graphics for gta 750 4gb or 950 2gb

Hi I need help my friend wants to build a PC but I can't choose between a 750 Ti or 950 2gb he will mostly play gta 5thanks for replying which needs a lot of memory 

Posted by paul the maker 2 years ago


how to turn led on and off in asm

In asm how do i turn this led on and off i inted ti build a 5x7 led dot matrix but first need help with the programming in asm to turn and led on and off rest i will work on from there if anyone can help the pic below is the shematic

Posted by john criten 9 years ago


Ok, it's Chicago, lets work with local materials.

What I know we have lots of that's just sitting around not being used: Cattails Phragmites Railroad ties Bricks Buckthorn Newsprint I'm sure I'm forgetting stuff.... but list more materials here and we'll get working on it.

Posted by Hyperviking 11 years ago


THIS CIRCUIT PULLS ENERGY FROM THIN AIR !

This circuit pulls energy from thin air http://www.tgdaily.com/sustainability-features/68538-this-circuit-pulls-energy-from-thin-air Most of us are familiar with Texas Instruments (TI) as the company that made the graphing calculator we used in school. Calculators made be the company’s bread and butter, but that’s not all they’ve been up to. TI recently introduced the industry’s lowest power DC/DC step-down converter, a tiny circuit that could allow future electronics to power themselves without batteries or wires. The tiny power circuit allows mobile accessories and wireless sensors to manage microwatts generated from solar, thermoelectric, magnetic and vibration energy, which could eliminate the need for bulky, toxic batteries in the future. A

Posted by iceng 5 years ago


My crazy knex idea

I dont have pics but i tried this today. i got 10 rubber bands tied together and launched a red connector with a red rod out the back. this went about 700 FEET!!!! it is just an idea but the gun or launcher would have to be 10 ft long =p.

Posted by paperninja 10 years ago


permanent login or "remember me" for Pro?

Hey everyone, I love the pro membership, mostly because this is probably the coolest site on the internet (maybe tied for first with Make Magazine). Anyway, I'd love to have the site remember that I'm a Pro, so I don't have to sign in every time I go to the site. Any suggestions? Thanks, Paul

Posted by cadsculptor 7 years ago


i am selling a MSP-FET430PIF

I am selling a MSP-FET430PIF - brand: TI - model : msp-fet430pif - $75 - pay by paypal. - this device allow you to program onboard MSP430 microcontroller.serie from TI.com - i can also give you a few micro-controller samples. - no need for eprom and expansive device to program your micro. - USB type

Posted by marquisparent73 7 years ago


fun stuff

Lol my uncle took out his 47 foot boat and tied a beer keg to it and once he was in 780 foot deep water he let it down and it imploded and wen they took it up it was all crushed it looked like a giant egg timer and they opened it and drank it they said it tasted like salt lol if any1 has done this or something fun like this plz share

Posted by thesab 10 years ago


Multi-Button USB Pedal

I wanted to make a USB pedal for my computer and set macros on it using glovepie. my problem is i dont know what items/steps used to make the pedal (other than buttons, wire, and a USB connection). i was shooting for ti to look something like those old pedals for guitars, nothing too fancy.

Posted by REA 10 years ago


Whippy Light: For Greens Who Like to Blind Themselves

This clever light fixture takes the shape of the CFL and manages to incorporate it very well. Of course, the problem is that this only looks good when it's not lit. Turning ti on to, say, light the room will quickly turn this from a conversation piece into a bright nuisance.Nice idea, tho. Link

Posted by fungus amungus 10 years ago


Storing Wheat

Hi, Our group is buying about 1.5 tons of wheat.  We are packing it in 5 gallon seal-able buckets after doing the dry ice thing.  We intend ti use some of the wheat as seed in the spring (probably many springs). QUESTION:  Does the use of dry ice affect the viability of wheat?  If so- is there an alternate long-term storage method we should be considering? Thanks

Posted by FrdF 7 years ago


HELP! BORDEM IS STRIKING!!

I really, really, really need ideas for what to outside... I have a friend who is my age (12-13), I am not playing with fire, no g-friend, no drinking (these 'no' things mean i cant), and I have a 25 foot rope tied to a tree in my backyard... and lots of mud... and ballons (non-water)... ideas!!! please!!! Thank everyone who has posted and/or will post!

Posted by ellomate56 11 years ago


Animatied 3x3x3 LED Cube !

A guy named "portreathbeach" built this simple 3x3x3 LED matrix. It uses a PIC16F690 in a ZIF socket for the brains. Each layer has nine LEDs with the cathodes tied together. The anodes from each LED are connected to the LED below. The LEDs are multiplexed so that even though all layers appear to be on, they're being addressed individually. Video of the matrix in motion below !!

Posted by =SMART= 10 years ago


Christmas Ornament Patch: Ho Ho Ho!

'Tis the season to be decorating with ornaments! If you want an ornament patch, leave a new comment below saying "Ho Ho Ho!" This is open until noon PST. I'll be giving out patches when it closes. UPDATE: This is closed! Purple ornaments have been delivered! Stay tuned for more ornaments.

Posted by fungus amungus 8 years ago


'Tis the Season to be Missing...

.. fa lalalala la la la la! OK folks, I'm off to the wilds of Northern England in about 18 hours from the time of typing, spending Christmas with relatives who don't really grok modern technology, so my access to the inter tubes will be sporadic. Just in case I don't get online before then, I'd just like to wish you all the best for whichever version of the season you choose to celebrate.  Whether you are celebrating with family, friends, I wish you a relaxing time with your loved ones. If you are celebrating alone, I wish you a hug from a stranger and a phone call from a distant friend.  If they don't phone you, you should phone them, just to wish them a happy holiday, and to remind them that they are in your thoughts. The tree was posted on Laughing Squid. EDIT OK, so I didn't end up missing so much, but I will definitely be offline for the next 24+ hours. Happy Holliers, one and all!

Posted by Kiteman 6 years ago


WinRAR Commandline Help needed!!!

I have started using winRAR command line but have ran into a couple problems. -I cant get the password command to work "rar p[password] example.rar" <the command i try to use. is there a problem with this? if so help plz. -I have also been working with the email command and tis is as far as i have got "rar ieml[silvaofdarkworld@yahoo.com] example.rar" Any hep is wanted!! Thanks

Posted by spiker 9 years ago


Need help with unknown component

I'm having a little trouble figuring out what this little fellow is. I recently got a grab bag of components and so far only two have puzzled me, this is one. I'm really just not sure how to identify it so if someone would be kind enough to help out it would be greatly appreciated. markings: (symbol looks like ti maybe) 8432 el salvadore 660570 61047

Posted by chandlerman 9 years ago


Suggestion: LED flyies

I've seen LED throwies, LED floaties but not LED flyies. Since I don't yet have my camera and I don't have an interest in throwies but I know a lot of people do... Anyone fancy making an LED flyies instructable? LEDs and button batteries, taped together and taped to the bottom of helium filled balloons. The balloons then tied together with cotton thread to make a mat of flying LEDs! Any takers?

Posted by Jayefuu 9 years ago


alternative stepper motors?

I recently tore into a couple printer-scanners looking for stepper motors. Unfortunately all I found were some DC motors that seem to be tied into some sort of sensor that acts like a step counter. Does anyone know what they are called and how to use them in place of stepper motors for a CNC machine? As a side note, I have a very limited understanding of IC function, think of me as having lived a purely analog lifestyle.

Posted by 50ul84n3 8 years ago


Storing periphery and cables under the table w/ a perforated plate

Hi there! Many years ago, I found an instruction for storing PC peripheries and cables under the desk using a perforated plate and cable ties. But unfortunately, I'm not able to find it again. Does anybody has a clue of what I'm talking about and can give me a hint oder even a link? :) Regards. Felix

Posted by f.zweig 8 years ago


Charging Multiple NiMH

I'm modding something (secret, Instructable later) and there's going to be some integrated NiMH batteries to replace the one 1.5 AA battery that the device use to use. Due to funky space constrictions, I'll be using 7 tiny 320mAh 1.2V NiMH coin cells in parallel (to get a decent amount of maH). How hard is it to charge a bunch of batteries like this? Could I get a chip from a place like Maxim or TI? All of their chips require the batteries to be in series... Thankyou!

Posted by guyfrom7up 9 years ago


World's Largest Solar Farm Opens

Over in Spain a new solar farm that takes up 247 acres has gone online. 'Tis huge!Here are the numbers: - 247 acres - 20 megawatts peak power capacity - 20,000 homes can be powered off of it - 120,000 solar panels are used - 300 days of sun a year in that area - $28 million generated each year - 42,000 tons of CO2 reduced each year link

Posted by fungus amungus 10 years ago


Chicken mesh and plywood radio/wifi reflector dish.

Haven't quite the time to do a proper instructible for this, but in case anyone finds it useful: http://solarflower.blogspot.com/2011/07/chicken-mesh-and-plywood-radiowifi.html Has schematics, 3d models and construction instructions. Cost about NZ$20 in materials (plywood, mesh, cable ties, screws), took a couple days to make, but really only because of the lack of proper power tools. Works real good.

Posted by SolarFlower_org 7 years ago


Cardboard Playhouses

Greetings all, I'm wondering if any of the members ever work in cardboard for children's toys or playhouses ? I'm finishing a belated Xmas gift for my niece, a six sided cardboard tee pee that breaks down into 12 easily stowed sections and fastens with releasable zip-ties. All the material aside from adhesives and said fasteners were recycled from local appliance and furniture retailers so it's a very green eco-friendly item. Should there be any interest I will post the plans and material list at a later time.

Posted by patron_zero 10 years ago


laundry soap dispenser

I have racked my brain trying to create a laundry soap dispenser from my large tide bottle that lays on its side, it has a spout. my thinking was if i hook up a clear tube to the spout push the button and get the correct measurement for a small or large load. but the problems i keep running into is that there is a leek from zip ties or the soap drips also i cant get the soap to go into the hole where its sposed to go rather then all over everything else....

Posted by kristenmix 6 years ago