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STM32F407IGT6 Ethernet problem
Dear all I have build my own custom board using STM32F407IGT6 device and used ST802RT1A as the PHY,and have used Keil as the compiler, when I start debugging and I break at main,...
Friday, 19 April 2013 - 12:09
Muliti layer Ice breaker
Dear all One of my customers has ordered a multilayer board for playing with spartan 6, it should be 8 layers PCB, I have done a hundred very good quality two layer boards, But I...
Wednesday, 10 April 2013 - 11:14
Dear all Do you know the manufacturer or do you have any datasheet link for this varistor part number ZOV14D431K
Monday, 1 April 2013 - 08:41
Capacitive touch design house
Dear all I want to know if you know a design house for fabricating capacitive touch on glass for prototypes (less than 100 units) and have a reasonable price,Also if possible I...
Sunday, 13 January 2013 - 13:31
Detecting system crash
I have built a system,and I have used FreeRTOS with several ISR's on,the system works fine, but after about 10-30 minutes it will crash and will restart again,It's not possible to...
Saturday, 29 December 2012 - 07:13
RS485 Problem
Dear All I have build an alarm system,I have connected all of them on a modbus system, When I connect 7 systems and lower the bus is working fine,But when I increase Number of...
Tuesday, 18 December 2012 - 13:51
Data collector Ideas
Dear all I want to build a system that would be able to measure 36 analog signals with in a 300 microsend window and be able to sample them 250 samples a second, and then I should...
Tuesday, 18 December 2012 - 13:02
Atxmega128A1 VS ATxmega128A1U
Dear all I want to know if ATXMEGA128A1U is pin compatible with ATXMEGA128A1,what about software, are they compatible? I have some app for A1 and I Update the systems with...
Tuesday, 11 December 2012 - 11:14
Paralleling LM2576
Dear All I have a 53VDC Source and want's to run a 12V dc motor,the continuous motor amp is about 8Amp's and I think it's surge current is in the range of 30A, I want to use...
Monday, 12 November 2012 - 12:17
Variable array size
How do I implement something like this? uint8_t number_of_alarms=20; struct alarm_t alarms[number_of_alarms]; when I do this GCC complain about this Quote:variably modified '...
Sunday, 11 November 2012 - 12:34
Precision resistor prices
Dear All I want to know your opinion about these prices on digikey, Are they real? If so why I have got so much lower prices from Chinese distributors? They told me they would...
Tuesday, 11 September 2012 - 11:20
implementing IEC61850
Dear all I could not find a free open library for this protocol; do you happen to know any? If there is no such thing where do you suggest starting for writing the protocol from...
Tuesday, 31 July 2012 - 14:25