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Changing from Plastic to Metal
Hi, We have developed a electronic latch that is currently in a plastic case. We have identified that the plastic is weak and I have been asked if we can diecast the outer case....
Thursday, 4 February 2010 - 09:49
Atmega88 locking up
I have designed an electronic keypad lock using an Atmega88. We are testing the product at the moment and it works well. The problem is that after say 3000 operations the lock to...
Thursday, 23 October 2008 - 08:51
7 Segment display
Hi, Sorry if this is a silly question but i am struggling to think straight. I have a 7 seg display common anode, with the +Vcc connected to a boosted 5V supply. The avr is...
Wednesday, 9 July 2008 - 14:54
RFID using u2270b
Hi, I am looking for some help with a circuit using the Atmel u2270b. I have had some boards built for an RFID lock and I cant seem to get the U2270b to communicate with a Atmel...
Wednesday, 28 May 2008 - 09:04
RFID
Can anyone recommend a RFID reader chip to run on a battery operated device. I have a 3V supply from batteries, I can use a DC/DC converter for higher voltages. Also I am looking...
Monday, 7 April 2008 - 09:56
Quantum Reasearch Group
I just read Atmel have brought Quantum, they must have read my mind i am just starting to look at changing our locks to use capacitive touch. Hopefully this will hurry the AVR...
Thursday, 27 March 2008 - 15:17
Magnetic card reader
Hi, Sorry if i am being stupid but i have spent all moring trying to figure away to read in and store data off a magnetic card reader. I am using a ATTINY2313 and have the reader...
Friday, 19 October 2007 - 10:55
Problems programming ATTINY2313
I have built a pcb and an are trying to program the AVR via the ISP on a Jtag ICE 2. I keep getting an error "WARNING: FLASH byte address 0x0000 is 0x00 (should be 0x12).. FAILED...
Thursday, 27 September 2007 - 13:15
XMEGA
Any one know much about the AVR XMEGA chips, I have just had someone arrange to come and see me next week to show me them. It would be nice to have some background so i know what...
Monday, 17 September 2007 - 14:52
Proximity Switching
Hi, I am looking into proximity switching to be used on door handles. I am thinking of using an Analog Devices AD7746, which is a capacitance to Digital converter. This seems like...
Monday, 13 August 2007 - 11:14
Master code generation
Hi, I have now designed and i am testing an electronic lock which uses a keypad. What i want to know is does anyone know how I can give each lock its own master code which will...
Tuesday, 17 July 2007 - 13:41
Pull down
Hi, i am designing a Electronic Lock at the moment using a keypad. Now all is ok apart from when i try and wake up the lock from sleep mode. I have to use a low level trigger but...
Monday, 2 July 2007 - 08:32

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