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Following on from this thread in the microcontrollers section, I've started my actual build. The keyboard was a cheap £6 one from the supermarket. I've replaced the LEDs with header pins and done the same for the external connector (the wires were just soldered to the bottom with a pathetic blob of hot glue to hold it together). There were also a couple of unused holes for an extra bypass capacitor - a handy place to put another couple of pins for the voltage rails. Contrary to the...
BobK
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3K
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4
I will be using Eagle PCB software (the freeware version) because that seems to be used by a lot of hobbyists, and it can produce the files needed by BatchPCB (or anyone else).
BobK
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3K
I will use ExpressPCB's free software to design the PC board. This is proprietary software from a PCB manufacturer that I have used. The software is beautifully simple and easy to use, so it is great for a hobbyist.
(*steve*)
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3K
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5
OK, I'm a glutton for punishment. Quite some time ago I purchased some small chips designed to drive a couple of LEDs at a constant (programmable) current. I was silly enough not to take enough notice of the package to order them in a BGA package. This has spurred me on to try to improve my toner transfer technique to produce boards with traces of 0.1mm in width. For the imperial amongst us, that's a shade under 4 thousandths of an inch. My existing printer 300dpi could not get near...
(*steve*)
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3K
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2
As part of something I'm doing elsewhere I have made a Sous Vide cooker, designed and made a force-displacement device for measuring elastic modulus of material, and cooked some meat for a long time.
It is going to be a test fixture that will be apart of an entire test-set with the 128 pin cables included in the test-set. The test fixture will allow access to test points for all the pins on the device and will be used in software development as well a
My latest project is my touch fret touch string synthesizer bass guitar, based on digital sample table synthesis with a 6bit synthesis engine.
I just spent about an hour and a half writing a nice long log of what I have done with pictures and lists of equipment. I hit spell check because I'm a bad speller and POOF... everything went away. I will reproduce the post tomorrow but in the for the being I just wanted to let you all know. I have to figure out how to use a piece of equipment that simulates indirect lighting strikes by injecting transient waveforms onto equipment while power is applied. These tests for aviation...
Bat Detector Project
amielaroux
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5K
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1
These directions will show you how to make a simple digital thermometer for less than $30 using a few electronics and three (3) ICs.
KrisBlueNZ
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2K
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1
My "notsohot" project will enable a heating device to be cycled on and off with a duty cycle adjustable from <5% to >95%, and a cycle time of around 7 seconds, to reduce the appliance's average heat output (and power consumption).
(*steve*)
Updated
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2K
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Used as a dummy load to test a Keithley 228 Voltage Current source
Supercap2F
Updated
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2K
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Sumo Robot, complete with schematics and code
adamq
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2K
200ws high power xenon studio flash strobe
brian22
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2K
Home Automation with Visual Basic, Proton Basic & Proteus
Take a guitar amplifier but instead of a speaker, use a surface transducer to resonate the body of an acoustic guitar.
davelectronic
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2K
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1
Linear PSU based on a single LM78S12CV voltage regulator
Raven Luni
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2K
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1
Project log for a homebrew Z80 computer
3D Printed animatronic Tail
BobK
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1K
Reaction score
5
A 10 pointed star with green LEDs and red LEDs on alternating points
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