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Twisted pairs are used for differential signals (balanced) hence a good to a very good electromagnetic coupling between the wires. Lets have following scenario: one twisted pair, 1st wire is MISO and 2nd wire is MOSI. MISO is high and MOSI is switching from high to low. Due of good...
Hi,
Do you made the basic checks:
- everything is power up
- the microcontroller is running
- the microcontroller is setup correctly
- the keypad is reading correctly
- the RA3 is set as output
- on IR LED which is the voltage drop on it? is biased corectly
At a first and quick look over the...
Re: IS IT POSSIBLE IN I2C USING 1 MC AS MASTER AND 2 MCS AS
Hi rajtech,
You can connect how many LCD you want to the uC if you fave enough I/O pins. For LCD using HD44780 you can connect toghether all data pins (all 8 or 4) depend how your software is working and also the control pins RS, RW...
After I read about the Pikdev and Piklab it seems to be better the Piklab. Also this IDE support the ICD2 for program and debug.
Also the SDCC it seems to be a good ideea to compile in C.
A simulator will be also good :D.
Any ideea which Linux version will most suitable for develop in...
pic16f88 pull up
Check the MCLR pin if was always pull-up to 5V.
I have be encounter this strage behaivor when in the sw I put MCRLEN and I forgot to pull-up the MCLR pin externally.
Hello,
I have in plane to switch from Windows to Linux (possible SuseLinux) and I want to know which tools can be used for development. I used microcntroller from Microchip 12F, 16F and 18F models. Also the programs that I write are in C.
What I need:
- good editor,
- C compiler,
-...
Verify if the uC is corect connected to the ICD2.
Check also if the uC is connected all the time to ICD2 and you don't have poor connections.
Sometime ago I have problem with the socket were uC was inserted. After change the socket the programming was succesfully.
The IanP ideas is very good and this will protect the transformer from overvoltage. Also you cand add in parralel with the fusible or resistor a small lamp (AC neon lamp) or a led with the rol of signaling the fault state.
Also an ideea is to use a optocouplers between the sensor and the main...
i2c versus spi
The SPI means Serial Pheripheals Interface and is sincronous serial with a posibity to program how to operate. The speed can be set from very low to very high (10Mbit/s). Usualy SPI is used for high speed transfer of data between two equipement. The stardard does not support...
Re: ccp in compare mode
Hi,
Recently I work with compare mode. This module work very good and is easy.
how it works:
- First you have to set the compare mode how the intterupt will be set. For example set for high on match and a value will put in ccp registers.
-The timer1 is compare agaist...
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