₦airaland Forum

dealslip:
If you are not from the north, please leave there before Febuary 14, 2015. If Buhari should mistakenly lose whether by rigging or free and fair election, you will be the first casualty, whether you voted Buhari or not. The corpers that died in 2011 are enough examples. If you are not a Niger Deltan, leave that place before February 14. They have been promising hell if Jonathan doesn't return. Nigerians be wise. Do not waste your life on politicians, because not one of them will lose their lives in the coming election. The soldiers and police Meant to secure your lives are attached to each of them in dozens. Jonathan nor Buhari is a magician. Corruption can only be wiped out by you. If you work in the civil services don't help to manipulate figures or systems or taxes and report to work early. Don't give police and FRSC bribes for circumventing the laws. Don't steal from your office till, do not cheat your fellow man. Do not demand money or contracts from politician in exchange for votes. Reject gifts from them. The cumulation of this vices is what is called corruption. Nigeria wil change if we change because APC is PDP and PDP is APC, there is no change in that.

vonskyes:
I gave gotten the ferric chloride from oshodi. how do I mix it to get the required etching solution? thanks

vonskyes:
Anybody with any idea where i can get Solder mask for PCB board in Lagos or anywhere in Nigeria. Thanks

tolugar:
I ve same problem with my car (Tata indigo) At 80kmh it vibrates, at 90kmh it stops
If I clutch down it stops. I've done all the wheel balancing and alignment. Tyre is in order same is rim.

My machanic is clueless now

Someone shld help

princejude:
Double sided-PCB

Board size = 46mm x 81mm

5 pieces = N14250 @ N2850 for one
10 pieces = N15390 @ N1540 for one
20 pieces = N17670 @ N890 for one
50 pieces = N25270 @ N500 for one
100 pieces = N35910 @ N360 for one

The choice is yours.

baba11:
Thanks. I'll try that....

bushdoc9919:
Want my solution to the above? We have to make our education system practical and problem solving oriented. But that needs a change in mindset. We are not a rich nation. We are a poor nation. The minute we get that into our head and stop deceiving ourselves....is the minute we are on the road to a knowledge based society....and an end to half baked graduates.

Oil is a curse.

baba11:
I'm opening this thread as an addendum to this:

https://www.nairaland.com/684167/inverter-users-lets-experience

As we all know, we have many of them in the range of:

solar
Inverter
Biogass
Biomass
Tidal waves
Wind energy
Small hydro electricity generation etc

Marvin67:
You made some important points, but let me highlight somethings.

1. This is not the military regime where the head of state sits in his office and orders soldiers to flog people who perform corrupt acts on the streets, roll them in muddy water, and draws up a list of top officials to be arrested.

2. This is a democracy where institutions are empowered to act. The president can not order the arrest of somebody as he's not the police or the EFCC.

3. Corruption is everybody's battle to fight. Why are we all complaining of the president? Why isn't anyone saying anything about the senators? Let a senator from the opposition present an anti corruption bill, let the house or senate pass it, and let me see if GEJ wouldn't sign it into law. Everyone has a role to play here. Let the EFCC make one high profile arrest, and let me see if GEJ would stop them from trying the person.

4. The insurgency we are seeing in the North today, started because our past leaders neglected the North. They refused to educate the people as they were benefiting from the high level of illiteracy in the North. None of our past leaders built an islamic school where the children can learn islam and normal school work. Now GEJ has built 125, but it looks like the schools are coming a little too late.

5. If Buhari wins, there'd be violence in the south/south. Militancy would start all over again. If GEJ wins, there'd be violence in the North, and in some parts of the south/west. Either ways, 2015 would be hot. BH may stop, but another form of militancy would start, some people are already getting warships.

6. God help Nigeria. Let's all pray for a better nations. Our politicians (both PDP and APC) are selfish, desperate, and full of deception. I think we need a third party in Nigeria, and a third candidate.

GOD BLESS NIGERIA

baba11:
I too....it was bringing out error message on nearing completion.

Seun:
Between 7:20am and 7:26am, Nairaland was down for routine maintenance. It should have taken only 2 minutes, but there was a minor issue.

Luckygurl:
Hope this can work on a PIC16F877 MC. The circuit connection is a bit complex compared to the ones I've done previously. I'd try it out though

Liadi2:
Pls boss I need ur mobile number help me to send it to this email Biodunayodele68@gmail.com

Luckygurl:
@acontree, I'd love to own a copy of the pdf version of the book. How do we go about it??

A big thanks to all who responded, I won't hesitate calling on y'all whenever I encounter a problem.

princejude:
Introduction To Microcontrollers

Welcome to the wonderful world of microcontrollers. You are reading this thread, because you are interested in the fascinating world of electronics. This document assumes that you have basic ideas about electronics, and are able to build simple electronic projects. Although microcontrollers are hi-tech devices, yet they are extremely easy to use. Once you have mastered the ideology behind and know the procedure to control various devices, a whole range of applications is open to you. Devices which required a large number of components and skillful logic design can now be built with almost no or minimal components. One of the greatest advantages of microcontrollers is that they can reduce the hardware requirements dramatically. The logic which was going to be implemented using a number of devices and components can be replaced by software in microcontrollers. Truly speaking microcontrollers are small, one-chip computers. As opposed to microprocessors, which require a number of peripheral devices, like, memory, I/O etc. Microcontrollers have all the necessary peripheral devices built into it. However the scale is small, memory is limited, so are other features.

https://i45.tinypic.com/pn62t.jpg

Remember Microcontrollers were designed to control small peripheral devices, and as such these applications do not require megabytes of memory or the entire power of your PC. Whatever memory and peripheral devices that have been integrated into the package are enough to handle the job. A large number of microcontroller units are available, each differing in terms of memory available, and the number of peripheral devices integrated on the chip. Therefore once you have mastered, how to use these devices, it then remains a matter of choice for a particular application, which microcontroller to choose. Since basic ideology is same, if you master one chip, it is very easy to migrate to another. Moreover if you tend to stick to one clone, they are all upwards compatible.
In a nutshell we can say that a microcontroller is just an integrated circuit which is programmable. Unlike most other digital ICs, which have a designated function, like NAND gates, Flip-flops, Oscillators, 7 segment display drivers, arithmetic calculators etc. Microcontroller has no designated function. If you have a Microcontroller (MCU) chip in your hand and ask what type of function is it going to do? The answer would be I don't know! It can be used to control a motor, or an LCD display, or a 7 segment LED display, or can perform mathematical calculation, or control an infra-red remote control or what else? This is such a surprise that a single chip can do so much. It is versatile, in a sense that you can get a variety of jobs done by this chip, if properly used.
In order to get a job done by this chip, you need to program it first. This program will control the various I/O lines of the chip, and these I/O lines in turn control the devices like motors, LEDs, Infrared sensors etc.
Thus in order to control a device you need to know, its control structure, for example controlling a simple DC motor is different from a stepping motor, and this in turn is different from servo motor. It is therefore essential before starting an application to understand the control requirements of the device. Then you program the microcontroller accordingly, and this makes a complete application.

Microcontroller Applications

Due to the versatile nature of these chips, they have found applications in almost every electronic device today. Think of any device which seems to be computer controlled, it will have a microcontroller working in it.
For example a microwave oven, has a magnetron gun, which heats the food, a motor which rotates the plate, and a display to show the time and cooking parameters etc. Now on the basis of cooking parameters selected by user, the microcontroller inside will be controlling the plate motor, as well as the magnetron gun, turning them on and off periodically to heat the food.
Think of a temperature regulator in your air-conditioner, the microcontroller is sensing the room temperature and according to the selected options, turns the compressor on or off, and the wind swivel motor on and off. So it has a microcontroller as well.
Think of traffic lights, they have to be turned on and off in a set order, it is easy to make them using logical gates, but what if we need to change the order and timing? A microcontroller can do the job easily.
Think of your car, it has microcontroller sitting in it, which is controlling the fuel injection, monitoring the engine RPM, tyre speed, engine temperature and many other parameters. On the other hand it is controlling the amount of fuel to be given, adjusting the appropriate gears and displaying various engine parameters on screen to driver.
Think of an industrial automation system, where small robotic arms are being used to assemble the product, all this automatic process is being carried out by microcontrollers.
Think of the moving sign-boards on airport terminals, the LEDs in them are being controlled by the microcontroller to display messages.
In short there are literally thousands of applications including cell phones, personal and industrial robots, security systems, data logging systems and what not all have microcontroller application.
So if you are interested in electronics as a hobby, or as a professional, it is mandatory to know how to use microcontrollers.

Having a basic idea of electronics, and programming is all that you need to enter into this fascinating world.
This course will take you from beginning to an intermediate level, where you should be able to design your own applications.

9free:
Chief Programmer, are there updates available for the PCB Symbol Library/Gallery?
Or are we limited by the default gallery components?

deleib:
bro, i'm really impressed by this project. I really do sth like this. I have a strong love for technical build up and dn't knw if u cn help. I wana learn how to built circuitories. Pls help. My email is ibamex49@gmail.com and my digits=08106532532

birdman:
nice one. i am curious, maybe i missed it somewhere on this thread, but where/how are you buying the electronic parts for your project. Online, surplus store or what?

musicwriter:
@acorntree.
This's how Africans must start thinking for us to flee from technological slavery and poverty cause only science can solve the poverty problem of a nation. Until African children can be able to conceptualize science, we are going no way. Imagine having your entire community learn how to build circuits and they learn it using your native language. That would be the beginning of prosperity for that community. Unfortunately, only very few hold this knowledge.

Keep it up!. Be patient, I'll be able to help people like you source research funds in future. Believe me.

9free:
I don't why I always run away from PIC Micro-controller families.
AVR all the way!!!!