3774 Results for "Reverse Engineering Blood Glucose Monitors"

Trying to make pulleys
Log from Platform D
in a I spent a large amount of the weekend working on several ways to make pulleys or at least power transmission with what was available to me.Sadly, I didn't make it. Hopefully, you can still have some fun looking at the fails !This first collage...

Trying out potential steppers
Log from Open LIDAR
I'm back in town and my first two stepper motors have arrived. Plan is to hook them up and determine if they have a chance in meeting my needs. First step is to test them unloaded. Then to re-test them loaded with approximated inertial loads.Here's the...

Pump modification
Log from aquarium pump vacuum pickup tool (<10Eur)
Shanda SD-900. 8 Eur incl. shipping from China.There is one screw at one side......and four to hold the bottom plate (with rubber feet) in place:Inside, there is an electromagnet, directly powered off mains. The "amount of air"-switch bridges an one-way...

Testing flea Ohm's ADC and PWM
Log from 'Flea Ohm' FPGA Project
Hello Again!Before I continue on with RAM testing on the Ohm+, thought I'd do some more testing of the Ohm board's ADC and PWM capabilities.For this test, I knocked up a 'quick and dirty' Video overlay, with the FleaFPGA Ohm providing a 256x64 bitmap...

My first v2 boards
Log from 4014 LED minimodule
The DirtyPCBs package is here and the boards are just as expected.The experience gained with the previous runs has been useful, look at my page describing the tiny differences between DirtyPCBs and DangerousPrototypes: Dangerous Prototypes vs DirtyPCB...

Pre-Biased xPDT relay configuration
Log from AMBAP: A Modest Bitslice Architecture Proposal
The 3rd drawing from the last log (Dual-voltage power supply) asked for a verification.The CC-DPDT circuit works well, from 2.5V to 3.9V :-) [yes I bias the capacitor in reverse, booooh]If it works well under 3V, there is no reason to tune the 12V power...

Wi-Fi Power Switch
Details from Wi-Fi Power Switch
This started with my desire to modify my Kill-A-Watt meter to report power to Thingspeak. Got it mostly working, but still had some offset/inaccuracy issues due to sampling rate (and discovered it was off by a factor of 2 because the original X2 power...

Check out this ridiculous finding...
Log from Improbable AVR -> 8088 substitution for PC/XT
If you've been following the recent saga of assembling the AVR->8088 adapter, you mighta caught that I did most of my calculations based on a 74S04 to delay (and invert) the clock input to the AVR so the timing would align properly... Then, when assembling,...

more planning, more emulations
Log from Tiny SCSI Emulator
I spent the day rethinking the architecture of TSE, and plotting out the eventual move to support other controllers and device emulations.Still having issues with the Cabletron emulation, but it is being joined by DaynaPort SCSI/Link which hopefully...

Getting the project breathing
Log from Custom Christmas Light Display
Step 1: Knowing that the lights are a 3-wire setup, I assumed (key word) they would be WS2811 based for LED control. Great! I know how to program those, this should be easy, right? Not so fast...The GE ColorEffects are NOT WS2811 based. The use a proprietary...

Mildly annoying results
Log from RGB LED Oscilloscope
I should have tested it before, first the kit themself and then the forrest mims version. The matrix is all soldered up and the kits are soldered like I've interpreted it so far.At this point I cant tell what I've captured there, I'm having my thumb...

the works
Log from deskLight1
( for the software please browse my Github repository ) Again for the brain, the Arduino Pro Mini is used. This development board is cheap and has enough juice to do what is needed, which is: respond to user input via buttons or capacitive touch control...

1Ж29Б-В (1J29B-V) arrived too
Log from Hot logic
received these pentodes from Moldavia and they look lovely !This tube is funny because it has a wire on the top:The "etiketka" needs some explanations but the characteristics can be found on many web sites. I put these here "for reference":.OK, sorry,...

100% Balancing Accuracy?
Log from Low-Cost Non-Dissipative Active Battery Balancer
I finally made an improved version of the board. Main changes are:-better pcb layout-the use of 0.05% resistor-reverse polarity protection (schottky diode)-overcurrent protection (polyfuse)I plan to include overvoltage protection (zener diode) in the...

Bus design
Log from One-instruction TTL Computer
The address/data bus will be the focus of the computer. I will need two address buses - one for the source address and one for the destination address. And I will need one data bus. I figure for now I will keep it simple and have them all be 8-bit buses....

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