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timer offset calibration for RTC
hi guys been looking a the spec sheet on a new RTC that has a offset calibration method but i am not sure how it may be done in code as yet , any pointers Attachment 7519 Attached Images Â
View ArticleRead, and Send SMS by the PIC 16F628A via cell NOKIA 3310
Hi!! I just want know if NOKIA 3310 understand AT commands to read and send SMS, if it's true, so pliz guid me how can i process. Thank you.:grey::grey::grey:
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PBP command execution time
Main logic snippet: Code: ... mainloop: Â Â TRISA = %11111100 Â Â PORTA = %00000001 Â Â PORTA = %00000010 Â Â goto mainloop End ASM listing: Code: ... Â Â Â Â LABEL?LÂ Â Â Â _mainloop...
View ArticleMy first foray into PWM
Before I get too deep in this, can I blink an LED ON for 500uS, OFF for 500uS using standard PWM module? Or am I trying to use a Ferrari as a baby stroller? I know I can use DT_INT but I know how to do...
View ArticlePlease share with me your experience in building Data-Logger
I want to build a data-logger that records temperature and pressure every second for 20 hours. My circuit must work in a range of 20-130 'C and 0 - 9000 PSI ! And it must be inside a cylindrical...
View ArticleDT interrupt and 12f683
Code: '------------------------------------------------------------------------------- '|      Name  : Light_12F683.BAS                   | '|      Author :...
View ArticlePIC18F45K80 runs way to fast.
Hi. Im using the PIC18F45K80 for the very first time and use a 64MHz external clock source. To test the new hardware, and to see that it's alive, I just blinks en LED. The example blinks the LED way to...
View ArticleDS18B20 Question
I am using a DS18B20, with Bruce Reynolds program, a 18f14k22 running at 16 mhz internal osc. I notice that when the temperature "changes direction", in other words, when it first starts to increase or...
View ArticleMinimum lines for SSP
EDIT: Nevermind. I just found the SPI Daisy Chain connection in the datasheet. That means I can keep using 4-strand telephone wire. How fast can MSSP transmit at 64MHz? I was initially planning on...
View ArticleStraight RC ballcups
Hi, I'm looking for some RC ballcups like the purple things in this picture. Normal RC ballcups have a hole at 90 degrees to the threaded end. I need ones that have a hole directly opposite the...
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Keypad with hardware debounce
I don't want to have PAUSE in my program,and I'd like to avoid using an interrupt for this if at all possible. 18F44K22 @ 64MHz, Port D has ST inputs. Using this schematic from Mr. E's keypad thread:...
View ArticleReducing current on 18F2x/4xK22
I just noticed these nifty registers on my PIC. In this project, I only need power to USART and TMR1 modules (so far). Check your PIC to see if something similar is available. Code: PMD0 = %10111110...
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Elapsed timer not working as expected at 64MHz
Has anyone else had problems using DT's Elapsed Timer at 64MHz? When I run a 18F44K22 at 64MHz, 99 TICKS = .247 second. Attachment 7538 When I run at 16MHz, 99 TICKS = .988 second. Attachment 7539 It's...
View ArticleHI speed programmer
I need to program 400 18F4431 chips ISCP. I have found Xeltec, looks like they have a high speed programmer. Any opinions on this product or can you offer alternatives? Yes I know I could have ordered...
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I2C LCD
Merry XMAS to all! I'm back with another problem. Its first time when I work with I2C . I have a 1x LCD with 8 pins, I suppose that have a controller ST7036i or ST7032i (pin2, pin3 = NC) and also I...
View ArticleGHI Electronics Kickstarter Camera
GHI Electronics Kickstarter Camera GHI Electronics now offers the new ALCAM serial camera. It utilizes a similar command system to the popular file system chipset called ALFAT. I too have tried other...
View ArticleStrange register interaction on 18F2431
Hi guys, I've been banging my head against the wall for a couple of days now and I just can't seem to figure this out. Needless to say I need some fresh eyes and ideas so if you have a minute, bare...
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