E3D V5 vs V6 ooze

The E3D V5 and V6 are great hot ends!  http://e3d-online.com/E3D-v6 One thing to be aware of when switching from a V5 to the V6 is that because of the much more pared down nozzle profile, the force needed for extrusion is lower, this also makes the liquid plastic inside the melt zone much more likely…

Dip Soldering Notes

Place all through hole parts on PCB. Wet underside with kester 951, 959T or similar liquid flux (not sure which is best yet) Place over PCB preheater set to ~220C for ~125C board temp. – 100C is probably a better temperature for this. – may be better to preheat board then quickly flux then dip.…

Microsoft Arc Mouse Disassembly/Teardown – Investigating tactile feedback actuator functionality

I apologize for shakiness of the video – next time we will use a third person as cameraman! And yes, the mouse still worked when we put it back together 🙂

There are three sizes for the first video as I was testing how the different resolutions looked 😉

[KGVID width=”720″ height=”404″]http://hilo90mhz.com/wp-content/uploads/2015/01/arcmouse.mp4[/KGVID]

[KGVID width=”1280″ height=”721″]http://hilo90mhz.com/wp-content/uploads/2015/01/720p1.mp4[/KGVID]

[KGVID width=”1920″ height=”1081″]http://hilo90mhz.com/wp-content/uploads/2015/01/1080p1.mp4[/KGVID]

[KGVID width=”720″ height=”404″]http://hilo90mhz.com/wp-content/uploads/2015/01/Mvi-9062-1.mp4[/KGVID]

Tektronix TDS784C SRAM replacement DS1486-120 DS1250Y-100

These battery backed SRAM and clock modules have a shelf life of 10 years, mine are at 17 years and still working as luck would have it! but if the SRAM fails you loose all installed options. http://www.mcamafia.de/mcapage0/dsrework.htm http://www.walshcomptech.com/ps2/dallasrework.html http://www.ko4bb.com/manuals/index.php?dir=Tektronix/Tektronix_-_TDS784_TDS794_Digital_Phosphore_Oscilloscope

X Band microwave detection and radar

Just an idea and a few parts for now.. Links: Experiments with Doppler Microwave Sensor Matlab Code http://www.microwave-solutions.com/shop/modules/mdu1720.html Arduino project http://forum.arduino.cc/index.php?topic=91793.0;wap2 Parallax module with analog front end http://www.parallax.com/product/32213 Interesting notes about directionality of this type of module(or lack thereof) http://electronics.stackexchange.com/questions/55501/can-i-improve-the-directivity-of-an-x-band-radar-module-with-integrated-plane-pa Hacking the Mattel radar gun – it uses almost the same RF part as the…

Multilayer Ceramic Capacitor – reduced capacitance at voltage

One phenomenon not immediately apparent when selecting the proper ceramic decoupling capacitor for your design is the fact that the effective capacitance of these devices is drastically reduced under DC bias voltage conditions – such as when used as a power supply filter. This paper from Nic Components explains the phenomenon quite well: http://www.niccomp.com/help/VoltageCoefficientofCapacitors-032012-R1.pdf