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suppress surge at the source on 120 vac house circuit ? Hi All, I have a printer that causes house lights to flicker whenever we submit a print job. I believe this is a transient from the printer waking up and starting... |
Monday, 30 September 2019 - 16:39 |
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AVR generated 12v pulse, just for fun Hi All, I have not done any circuit design in 40 years, and that was freshman circuits (from Smith) and a senior MCU project (w/ 6800), but I have done a lot of embedded s/... |
Saturday, 28 September 2019 - 15:29 |
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blink LED on 4809 I have a 4809 based curiosity nano. I want to blink the user LED. The hardware data sheet says. So the LED has an external pull-up. In order to... |
Friday, 13 September 2019 - 02:16 |
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4809 / 0-series TCA CMPnEN pin-select documentation does not make sense Hi All, I'm hacking on my Curiosity Nano with atmega4809. I'm trying to set up TCA0 to toggle pin 5 on port F (the user LED). The 0-series datasheet indicates I... |
Sunday, 8 September 2019 - 19:31 |
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curiosity nano default clock rate? Hi All, I am working with a curiosity nano (with atmega4809). LED blinking w/ delays seems to indicate that the clock rate is not 16 MHz or 20 MHz. The nano... |
Sunday, 8 September 2019 - 17:09 |
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gcc8 error: pseudo instruction `__gcc_isr' not supported I put together gcc8.3.0 and associated tools (including avr-libc from SVN) with the 1.3.300 AVR dev pack. I'm trying to compile a program with interrupts and I get... |
Saturday, 7 September 2019 - 15:52 |
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UNO 3 --I2C-- DFRobot IMU not getting past START I have chinese UNO 3 w/ mega328p connected to SEN0142 from DFRobot with a MPC6050 IMU (3 DOF gyro + 3 DOF accel). UNO 3 <--> IMU +5V <---> Vin GNC... |
Friday, 24 May 2019 - 16:47 |
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building gcc=8.3, avr-libc on Linux w/ atpack hooks Below are my notes on building binutils, gcc and avr-libc with hooks for atpacks. Why? I can compile for atmega4809 now. In the following I'm installing under /opt/... |
Tuesday, 21 May 2019 - 00:52 |
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gcc, libc for atmega4809 ? I'm on linux, and prefer to use classic unix tools to cross compile for AVR. My linux distro comes with avr-gcc 5.4.0, avr-libc-2.0.0, etc. Has anyone found a way to cross-... |
Wednesday, 15 May 2019 - 13:10 |
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scope issue Hi All, Have not done electronics in decades. Bought a cheap scope: Hantek DSO5072P, which came with two probes. I was working with it today to debug UNO... |
Friday, 10 May 2019 - 17:56 |
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how to verify CPU is going to sleep? I have a demo to use a timer interrupt to wake up the CPU and toggle a pin to blink the LED on my Arduino Uno 3. Is there a way to verify the processor is sleeping? ... |
Sunday, 5 May 2019 - 22:39 |
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avr-as and word addresses Hi, I'm working with avr-as and trying to load the word address of a function into a register pair. I am getting the byte address. Does anyone know the syntax... |
Sunday, 14 April 2019 - 22:52 |