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I assume you're using an older MCU like an AVR or pic which are specced for 5V operation. To get extended battery life you should use a 3V MCU powered directly from the batteries, or with a LDO with very low IQ (many CMOS LDOs have Iq in the uA range). If you are clever with your component selection and use sleep modes correctly, one can reduce pow
Easyrider83 is correct, even if the answer isn't what you wanted to hear :smile: That pin is an input only, you can't use it to control anything outside the pic. Brian.
Hi all, I am trying to write a code for pic so that it can carry out different function depends on setting mode. Default mode: both LED blinking mode 1 : LED 1 is blinking mode 2 : LED 2 is blinking But my code doesnt work as what i thought. I am using IF statement my code is as below: void (...)
i want to build on off programable switch using pjc when i search on net then this project is find. link of project= but the problem is this code is only for one cycle of relay on and off operation ... i need relay on off on off after given time un
I want interface RAM with pic18f87k22 for store data, more specifically i want declare variable in the address of external RAM. After reading bunch of forum i conclude that i have to interface RAM parallel, which is supported by this cpu and use extended mode. (See attachment for clarification) I am not able find specific documentation about it.
Hey guys This is pic Programmer Schematic: 122972 The VPP here is sourced directly from pic pin, is it okay? Shouldn't it be sourced from 5V+ rail? Also, can I put some other PNP/NPN transistors in the place of those (BF959 and BC328) if I don't have them? Thanks in advance
Please show a schematic. It is probably an electical issue rather than software. Are you using LVP mode to program the pic? Brian.
i am having xbee2 module, my aim is to transmit serial data wirelessely. i am using xbee in transparent mode. i am having a pic micro 18f25k22 that operates in 3.3v . now i am printing a serial message "testing xbee" this is done if connect to hyperteminal i can see this. now i connected the tx terminal of pic to D-IN terminal of xbee, on (...)
Hi I m configuring CAN controller. i m using mcp2515 can controller and 16f876a pic. I read the datasheet, adn as per data sheet configure the bit time in Configuration mode so i done it. Now what should i configure, i m confused. is i have to configure the reception in Configuration mode only? How to proceed?
NEVER put 13V on MCLR for normal use. It puts the pic into programming mode so it should only be used by your programming equipment to load the code into the IC. At any other time it is quite likely to corrupt the program. You should have it pulled to 5V (or whatever VDD voltage you use) so the pic is taken out of reset state. You s
I am thinking of use the MAX155 Maxim, which offers 8 S & H channels so I will have simultaneous sampling. This IC communicates in parallel with the outside world, with 5Mhz clock makes conversion to max 3,8 uS so I will have a to
You have to display data in two different modes and use Timer interrupts. If you want I will write a program for you. Which MCU you want to use? pic, AVR, 8051 ? What crystal frequency will you use ? - - - Updated - - - You have to use a button to toggle the display mode. If button status is 0 then adc value
pic18F4520 20MHz crystal hitech compiler 50% duty cycle any accuracy is welcome. stable using protues signal generator ccp mode with single rising edge
Hello All, I'm using pic18f24j11. In my application my pic IC is connected to Bluetooth Module through UART. Both sharing same power source from battery. My problem is : When i program my pic IC in release mode I'm able to see the data on RX line from the BLE Module to pic IC. But when I program my (...)
pic24EP512GP806 MPLAB8.8V Hi, I am interfacing s25FL032P flash memory with my pic through SPI. how to calculate and set SCK required to use. For normal read mode in S25FL032P speed is 40Mhz clock speed. For setting prescalar bits in SPIxCON1 of pic24 how do I calculate the what prescalar values i need to choose (...)
I would use a dual one shot with suitable buffer and current limiter R to a few Watts of white LEDs, over driven but not to exceed max I with < 20% duty cycle. 1st one shot in retriggerable multistable vibrator or oscillator mode adjusts f vs R over a very wide f range with suitable RC values and Rmin limit. Then output drives 2nd one shot in asta
Without a schematic or program it is difficult to predict what might be wrong! Things to check: 1. is MCLR high? (if it is low or not pulled high the pic will be stuck in reset mode) 2. Is the oscillator actually running? Do you have it set to XT mode and have you followed the connection guidleines? 3. Do you have decoupling capacitors (...)
There aren't much I2C devices that support 3.4 MHz "Hs" mode. pic processors e.g. don't.
I am trying to interface pic628A with WT32i. pic has USART interface and WT32 has UART pins. Knowing that "Synchronous mode (USART) requires both data and a clock and asynchronous mode (UART) requires only data" I concluded that I have to connect pins 8 and 9 of pic to respective WT32 pins (16 and 15) (...)
108360 can any body explain to me how can this circuit produce an alternating current /voltage given that its a simple LC circuit.provided with 125khz from the pic PWM