Kanál používateľa juraj4electro
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TI Launchpad display board
juraj4electro
12 views
Problems:
1. plagued by static electricity :) whole display shows 8 thanks to CMOS 7 segment coder if i stand up from chair.. what to do now? maybe i can switch to 74HC(T)...
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TI launchpad oscillator test
juraj4electro
15 views
board is TI launchpad with MPS430 G 2553 MCU
DMM is PROTEK506, it supports frequency measurement
first pin P1.0 (sourced from ACLK=LFXT1) outputs 32768 Hz clock signal whic...
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TI launchpad unfinished display board
juraj4electro
13 views
This only multiplexes 5 digits, which do have some inputs wired to battery, so i cant choose digits yet. Multiplexing frequency is slowed down for demo.
stuff:
TI launchpa...
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64 bit fibonacci LFSR on Nexys2 1200k board
juraj4electro
32 views
this is linear feedback shift register with maximum period of 2^64-1
every clock cycle new output bit is generated
With proper initial value it should run for 11698 years...
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FPGA tempest transmission by interference
juraj4electro
41 views
project is very simple, there is 50MHz clock on dev board which is fed to 26 stage counter.
Three clock signals are derived 12.5 MHz carrier, 763Hz audible tone and 0.7Hz ...
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CIF webcam bombarded with alpha particles from thorianite, protective glass removed
juraj4electro
81 views
First youll see some thermal noise from camera sensor itself, then you'll notice some ocassional bright flashes - those are alpha particles colliding with the sensor.
or...
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CIF webcam bombarded with alpha particles from thorianite
juraj4electro
56 views
You can see plenty of thermal noise + occasional white or green / red flash or diagonal line, what is sign of electrons released by getting energy from impact of alpha part...
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VOR NIT on radio scanner
juraj4electro
170 views
This is signal from VOR transmitter near Nitra
broadcast frequency is 116.50 MHz
You can hear repeating NIT sign transmitted in morse code
used reciever is scanner Yaesu VR...
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preamp with 1000x amplification using MC1458
juraj4electro
83 views
It was very sensitive to manipulation of antenna cable (some yellow crocodile cables connected together) which was thrown out of window and it was not anyhow connected to p...
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random AB amplifier schematic from web
juraj4electro
112 views
i was searching for some amplifier that will drive some lo-fi speakers that were laying around, but i wanted not so bad sound and less power drain...
So it has 10x preamp s...
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