Matrix user forums

i did this project a while back, this is a universal tach for gasoline engines, the responce and accuracy is very good, you can set it for cam or crank, then type in how many teeth are on the tone wheel, then it will give back rpm based on time it took to count the teeth +1 that was input in menu, t...

i downloaded ccs and soon after deleted, but now any time i generate a hex file instead of .hex it returns and has changed all hex files to c object files, what can i do to fix it?

Thanks for sharing us this. I was in-need of using higher RAM for an application. I will give a try and come to you if stuck anywhere. nahh man, i've never used spi or sram chips before tonight, just trying to inspire members to try them so we can all learn and make cool things, i really like the n...

previous example was byte read and write mode, in this example we can fill all the ram locations at once with out delays with one address, then read them all back with one address, key to this is in sequel mode it autoadvances from the start address! to enable sequel operation (C0=0, spi_write(1), s...

picked up some new chips for communication projects, the one of current discussion is this one http://www.digikey.com/scripts/DkSearch/dksus.dll?WT.z_header=search_go&lang=en&keywords=23LC512-I%2FP-ND&x=10&y=16&cur=USD this chip is easy to use, since im using a 16f1939 with 32k of memory i thought i...

i use these chips commonly, if running internal, disable all options except brownout detection,
osccon=0x78; //16Mhz
osccon=0xf0;//32Mhz
below is a hex file and fcf with a 1m/s blinky using internal 32Mhz, tested on hardware

i keep seeing this while looking at memory chips http://ww1.microchip.com/downloads/en/D ... 22076B.pdf is anyone familiar with its applications

jonny, can you guys make the c code windows more friendly, if it had the red lines like in mikroc that show open/closed braces that would be awesome

just pointing out, code below is same as flowchart

what chip are you using? when i set and clear bits i do it in a generic way for all compilers for instance to set bit 2 in t2con register t2con|=1<<2; to clear bit 2 t2con&=~1<<2; if you look at bens tutorial on sleep function he shows how to do it in in a more eligant way on your interrupt you can ...

thanks martin, since i dont have a keypad i found a better resource (remote) the toggle is a bit different than explained in tutorials for this remote when you press a button it changes toggle state, if hold button or release button it does not change state this makes it possible for me to have a wi...

Unfortunately not :( I didn't expect this to happen...I just updated the software several times, and here is the result...ohhh what a stressful day.. i have a 24LC512 microchip external eeprom chip that i was itching to try, i did test below with picv5.5 and it returns the correct values, i noticed...

So it was the flux which cause the capacitive coupling?

yes, hot running water, polmolive dish soap, a tooth brush, and a hair dryer fixed the problem
low tech solutions, alcohol did not remove the flux no matter how hard i scrubbed

i did some internet searching and kept running into this @Brett – Imagine my surprise being shown the high-tech board cleaning system when touring an assembly house I hired. Kenmore. I shouldn’t have been surprised because when I was just a young engineer and had a board come back from the prototype...

Does the problem occur when the i/o:s are "loaded", or is the problem present when nothing is connected to i/o:s? the are always loaded as every pin has pull down resistors, when load the pin down with an additional 1k resistor the noise does go away, i have tried jumping power,ground and various c...

What kind of solder have you used for the board? Could it be flux from this solder creates capacitive bridges between the pins? thats the first thing i considered, and by the picture where the light is behind the board it looks like flux is present still, i used a new tooth brush drenched with iso ...

in the early 80's boss got a tuning machine in basically an oscilliscope with a co2 meter(you know the ones :lol: yep, a over glamorized sun scope, a good example of what im talking about is the ASNU fuel injection machine, i made a controller for it thats too large to post here but it does alot mo...

thats a neat board are you making your own dev type system

yes, i create alot of stuff for my automotive job and give my designs out to the public to make auto techs lives easier and cheeper, auto tools are way over priced

alright, got my pico and did some testing.... this looks alot different when using the pico with a different power supply on the board! looks to be ok, there is a slight amount of noise from chip pins that are close to each at the chip, t his is still there even if the traces are ran in complete dif...

The I2C pins are RC3 and RC4? Those are 'miles' apart on the chip, so it seems unlikely to be related to capacitive coupling at the chip pins for this pair.

i'll run the shop and get some high res scope captures

heres a close up of pins with light behind board to show chip legs
https://dl.dropbox.com/u/10367218/100_0997.JPG

not sure if this fits in the v5 section so please move or delete if it doesnt :?: really i dont know where on the web to ask this question :lol: designed a new board that i can use for communiction projects and such, i've built two of these boards, the second one i used 10k pulldown resistors on eve...

i have one way of doing the numbers that i came up with but it is a bit weird

i've been doing flowcode for over a year and havent done anything with keypads, im not sure how to do all the string stuff and what all the string stuff actually does, can you guys help me out with this

thanks kersing and steve, i wont get to this project for possibly a couple weeks, its always good to get an idea before proceeding