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High noise ground for BLDC circuit..Problem!!!
Ok I have got the board from futurlec and have put all the smd parts on it...see attachment. Its a BLDC controller circuit using atmega164 that I have been talking about here...
Saturday, 11 June 2011 - 04:48
AVRISP mkII not working? but STK600 is?
I just placed all my parts to a new designed PCB and soldered all parts... funny thing is the old prototype board was programble with a AVRISP mkII...but the light wont go green...
Friday, 10 June 2011 - 12:29
isolated DC voltage measurement (transducer)
Ok i know products like these exists...but I am curious to how they could be made... I have a situation where I have 180V DC supply that I would like to feed to a analog card of a...
Wednesday, 8 June 2011 - 03:28
atmega164 at 18432000hz
So I was running atmega164 at 14745600hz previously to drive my bldc motor... and then i decided to run it with 18432000hz crsytal.... It seems when I run it with 18mhz crystal,...
Monday, 23 May 2011 - 02:49
SPI port on UC3A0512 to Atmega164
Ok I think this is meant to be a simple question... I am going to have a single master (the main processor UC3A0512) which will talk to Atmega164 via SPI. The Atmega164 is driving...
Saturday, 7 May 2011 - 05:54
high current and low current tracks in Eagle PCB design...
following on from this thread: https://www.avrfreaks.net/index.p... i am working on putting my schematic on to a pcb designed using eagle. I have high current paths for which I...
Sunday, 1 May 2011 - 11:58
atmega ADC sampling time
hey guys this is a bit silly to many of you i guess. I got the flu and am finding it very annoying reading everything in the datasheet. but would you help me understand this a bit...
Friday, 22 April 2011 - 07:33
atmega timer...
Ok i am using atmega168 and trying to generate commutation signals for my bldc project... here is the problem: I first configured the timer 1 in fast PWM mode, with: TCCR1A = (...
Sunday, 3 April 2011 - 10:30
BLDC Motors
I am a little confused after reading various texts.... RE: the following, 1) PWM frequency (say I am pwming the top 3 mosfets) 2) Commutation frequency Texts been telling me that...
Sunday, 27 February 2011 - 11:19
IR2301 in 3 phase...
I am trying to design a 3 phase bldc circuit using 3 IR2301 mosfet drivers. I have 6 N Type mosfets. The problem I am facing is this. I keep both the inputs of a half bridge LOW,...
Sunday, 20 February 2011 - 11:38
Cooked my STK600 :( :( :(
oh no... i think i put 9.6V DC on VTG as I was swapping my board supply to STK600 back to my board... well my board has a big cap that was charged by the 9.6V and then i took it...
Saturday, 19 February 2011 - 09:22
cant ISP program with STK600 :(
Ok so after some long time I am using stk600 to program atmega168. I am using Avrstudio4. It seems I am not able to choose ISP programing freq of any greater than 2khz if I want...
Saturday, 5 February 2011 - 13:13

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