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0 comments on "tip: AVRdude on mac – using built-in from arduino"

More of a note to self*, since installing avrdude resulted in an avrdude without USB support. While Arduino also uses avrdude “under the hood”, but has USB support. And it would be nice if Arduino’ s avrdude can be used stand-alone, and it can: “/Applications/Arduino.app/Contents/Java/hardware/tools/avr/bin/avrdude -C/Applications/Arduino.app/Contents/Java/hardware/tools/avr/etc/avrdude.conf -v -patmega328p -cusbasp -Pusb -e -Ulock:w:0x3F:m -Uefuse:w:0xFD:m -Uhfuse:w:0xDA:m -Ulfuse:w:0xFF:m…

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0 comments on "USBisp V2.0 to USBasp conversion to use TPI (or: USBisp did not connect to usb anymore after fw update – fixed!)"

Recently I bought an USBasp, or at least that’s what I thought. I bought a clone that was advertised as  “USB ISP USBasp USBisp Programmer for 51 ATMEL AVR download support Win 7 64 (RANDOM COLOR)”, marked on the case as “USB ISP version 2.0” and “MX-USBISP-V5.00” on the PCB. I intend to use this…

Read More USBisp V2.0 to USBasp conversion to use TPI (or: USBisp did not connect to usb anymore after fw update – fixed!)
12 comments on "How to enable Motion Detection Interrupt on MPU6050."

The MPU6050 data sheet has a nice “marketing” section, claiming it has a DMP unit, and a couple of useful interrupts, among them a accelerometer event interrupt. However, how to actually use these features is not documented there. And I want to use the Motion Detection Interrupt (so I can put the host MCU to…

Read More How to enable Motion Detection Interrupt on MPU6050.
0 comments on "Python echo"

This adds a echo to a wav file. The file also gets louder, because the result is not normalized. (sample + 0.8*Othersample v.s. sample+0.8*Othersample/1.8). This is my first real experiment with DSP.  Maybe More Later(tm). Comments are welcome. (no registration necessary / pre-moderated by me) [sourcecode language=”python” wraplines=”false” collapse=”false”] """ Echo. Usage: python_Echo InpuFile.wav OutputFile.wav…

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0 comments on "Continued “data transmission whistle” experiment, more successful this time"

Okay, what’s this about? Oona Räisänen challenged her readers to construct a whistle that could transmit data using FSK. And if one reads her challenge carefully it says “whistle”. Not “pea whistle“. Now THAT simplifies things a lot! A whistle design like this can be modified by inserting a magnet and wrapping a coil around…

Read More Continued “data transmission whistle” experiment, more successful this time
0 comments on "Some short notes on the Lecroy9450 repair project"

Because there is no big news yet, some short updates. – Claude Schwarz pointed me to the Yahoo user group “Lecroy Owners group”, they have design files for a HHZ406 replacement. (Made by Dieter Frieauff). So maybe the ext. trigger input can be repaired as well. – A service manual for this ‘scope (And others)…

Read More Some short notes on the Lecroy9450 repair project