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Bypass Cap when two IC pins are close on board I am building a machine that i will be using K type thermistors with Max6675 chips and attiny45's The idea is making a board with both chips using a one wire communication scheme... |
Thursday, 29 July 2010 - 14:18 |
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Need some help with a bit of code from the TUT's From the Bit manipulation Tutorial, Peter has the following SBIT.H file. I am just started using CodevisionAVR (trying to move into C from assembler coding. Project would be done... |
Wednesday, 21 July 2010 - 06:06 |
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Driving the SLA7078MR Using an atmel chip of course I have the chip on the breadboard ready to test but I am not clear on the timing diagram in the datasheet (attached SLA7070 page.pdf) To reset the chip the reset goes high for 2us... |
Wednesday, 21 October 2009 - 06:04 |
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Programming Challange 5-Phase Stepper Since I plan on building a CNC machine I remembered I had an old 5-Phase Vexta PK564-AA sitting around and i thought I would give a try to making a controller board. The usual... |
Saturday, 19 September 2009 - 05:13 |
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Pin protection or driver chip I am working on my new acoustic lights that will have a controller that communicates with a tiny45 on each light. Since I will have at most 6 lights and 6 modes I have decided to... |
Friday, 16 January 2009 - 18:37 |
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op amp question My new acoustic light is working great when I use a tlc272ACP op amp but testing a OPA2134PA I had a problem. Using just a 10K resistor for a feedback to the -in with a 2.5V input... |
Wednesday, 10 December 2008 - 08:17 |
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Why did my 7805 regulator blow up? Using a GBU 4A Bridge rectifier 24V AC input 24V DC output to 7805A 5V regulator No capacitor across the 24V output (Note Diode inline with Positive to 7805A Input) 3300 uf... |
Saturday, 18 October 2008 - 23:18 |
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Tiny13 with big capacitor startup after powerdown I am getting close to the end of experimenting with my luxeonIII/Fansink + Boost and Buck converters project using a tiny13 and PWM to run the Buck converter. Since i will be... |
Wednesday, 1 October 2008 - 07:38 |
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Buck regulator design I am putsin with buck regulators now making my own (attached circuit) I am using a p-fet instead of the switch shown in the schematic. The gate of the pfet is connected to a 220... |
Tuesday, 23 September 2008 - 15:55 |
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Can i use a Zener when driving a fet? This fet http://www.fairchildsemi.com/ds/... Shows the Vgs max of 3V the plot shows using a 3V zener on the signal line using a 5V output from avr pin. Is this ok to do or should... |
Friday, 19 September 2008 - 07:35 |
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Communicating on power lines I am working on a project to communicate with remote LED lights using just the positive and negative DC power feeding the lights. Attached is a schematic of my circuit designed... |
Sunday, 14 September 2008 - 00:37 |
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New to coding in C having debug execution problems I decided I should learn how to code in C since I want to learn the avr32's. Since there is more help and tuts on the 8bit stuff i figured i would buy smilies book and butterfly... |
Wednesday, 20 August 2008 - 07:38 |