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Hello,
Thanks for your replay.
My LCD may work at 3v3 voltage, but the contrast dont work at this voltage, if I dont use a negative voltage. If I use 5V its ok for the contrast.
For the booster I assume that I'll loose more power boosting the voltage, than use a step-down regulator, am I not...
Hello,
I'm building a data logger, with 4x1,5V AA batteries, and my concern is to drain less power as possible to have a longer operation time.
I'm using a LT LDO regulator to 3v3, and I'm using a 8x2 alphanumeric display with no backlight. But I have to use a inverter to have a negative...
Re: 40V to 18V/2A Converter
Because I only found it after I've writen the post! :).
I think the LT1074 it's the best solution for me.
I'll also check out that link.
Thanks
Re: sms module
Hi,
Where can I find details on this project?
I have 2 projects that I need to send/receive SMS, and I have a couple of 6210 phones.
My problem was the cable/protocol of the 6210 SMS.
Can you help me on this?
I'm also looking for other project for a small/low cost SMS...
send sms by microcontroller
Hello,
I've exchanged my phone to Nokia 6150 and now I receive the message when the phone receives an SMS.
I'm also trying to get the Date and Time from the phone, I've noticed that is 0x11 need to be sent to the phone, but I get an Not ACK from the phone.
Does...
send sms using microcontroller
Hello,
I'm trying to connect a Nokia 6210 to PC using only an MAX232 to convert signals, and using RX/TX/GND pins on Nokia 6210, I've tried all baudrates, and cannot get any answer from Nokia 6210, I've tryied AT and ATZ commands and no OK return.
Do I need...
pic18f2550 usb
Hello
Where can I find PIC18F2550 USB connecting Schematics?
Or does it connect directly D+/D-/GND to USB PORT?
BTW: I want to connect it to a PC with a Delphi program. How do I do to send/receive data from/to PC/Delphi/PIC18F2550, in a easy way?
Thanks
jS
i2c+pdf+mplab
Hello
I think the problem is somewhere related with Slave PIC...
jS
Added after 5 hours 59 minutes:
Hello Again...
I'm more and more desperate with this I2C comunication!!!!
Please someone help me...
I'm using the Slave AN734, and it receives the ADDRESS, and then does...
i2c driver mplab
Hello,
That's my problem, they are not working...
I use the original source code from Microchip site, only change it to PIC16F876A... What PIC did you use?
Thanks
jS
i2c testing
Hello
I'm using the source code of AN734&AN735 original of Microchip.
I'm only changing FOSC in AN735 (Master) source of 8Mhz to 20Mhz.
Programming, and testing.
When testing the Error Led in AN734 (Slave) is Set, then WDT reset the PIC, then when receive next data the Error Led...
pic16f876a i2c
Hello!
The I2C Slave AN was very usefull.
I'm trying to connect both with the Slave source code, but it keep's giving error in I2C (the PORTB,7 Led turn ON, and WDTG reset's...)
I've tried several programs for the master, and the Slave always get that error...
I see the master...
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