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Codevision Codewizard read_adc function Where is it? I am setting up a 120 volt sequencing program to switch between 3 2000 watt heaters on one 20 amp circuit. I am using an allegromicro hall effect device that will generate a 60... |
Wednesday, 26 January 2011 - 05:30 |
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Calculating the Rt for a 1:100 20 Amp Current Sense Trans.. Hi, I am setting up an Aluminum anodizing line and I have three 20 amp heaters and one 20 amp circuit available. I tested the on time vs off time for one of the tanks and it only... |
Monday, 24 January 2011 - 02:30 |
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Building a driver for old tachometer gauges Hi; I am working my way through the school of hard knocks. My self imposed project for today is to build a driver board for a tachometer gauge that has a coil and three inputs.... |
Thursday, 26 August 2010 - 03:07 |
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Need some help with this thermocouple project I have spent many hours on this and it almost works :) The problem I am having I think is the reading and sending of the received bits. The max6675 is being read by a tiny45 16... |
Wednesday, 4 August 2010 - 16:51 |
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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 |