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Stanley Meyer Hydrogen HHO Buggy
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2ms/div
2V/div
CH1: Row 1 UDN2981A
CH2: Row 8 UDN2981A
PWM cycle of the rgb led matrix. The interrupt code runs when the signal wiggles. Each little dip scans the whole matrix for one brightness step. 32 scans make up the whole PWM cycle.
You can also observe an interesting effect here. The color that was displayed on the matrix has a hue value of 200, which translates to (0.000,0.666,1.000) in RGB. To set the status bit for a color to "on", the code nees to run 1 command, to leave it "off" nothing has to be processed. Therefore the code finishes a bit earlier. In the photo you'll see a slight difference near 2/3 of the wiggles. The period changes slightly from about 6 to about 7 wiggles per div. In this case you can guess the duty cycle of 0.66 for one color. It only works, as for red it is always 0 and for blue always 1, so only green changes at some point of time.
A finely enamelled silver medal issued by the Equitable Friendly Society PWM (Past Worshipful Master) and complete with an attached fob chain. This was awarded to a H. B. Hazell in 1918 either for services rendered to the society or for being a long-term member of the society by the Equitable Friendly Society.
en.wikipedia.org/wiki/Friendly_society (about Friendly Societies).
.
DESCRIPTION:
Size (medal): 1 3/32" across (28mm).
Material(s): sterling silver. The fob chain probably silver as well.
Finish: n/a.
Fitting: Bale & suspension ring with a short fob chain attached.
Imprint: silver hallmarked for Birmingham 1918 (t). Maker's make HS LTD for Henry Slingsby Ltd. Hand-engraved H. B. HAZELL 1918
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Por favor, no use esta imagen en los sitios web, blogs u otros medios de comunicación sin mi permiso explícito - Todos los derechos reservados ©.
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Gracias a todos por vuestros comentarios y reconocimientos...
Por favor, no use esta imagen en los sitios web, blogs u otros medios de comunicación sin mi permiso explícito - Todos los derechos reservados ©.
Please don't use this image on websites, blogs or other media without my explicit permission - All Rights Reserved ©.
Flight 7Q 460 parked at gate 4 after arrival from Melbourne, Florida (MLB.) N92EA previously flew for Air Nostrum as EC-IKZ, in Iberia Regional colors.
Minimal effort to get started with the Macroblock MBI5030 PWM LED driver. Comes with onboard LEDs, but can still drive external ones. All pins broken out. Only needs a microcontroller and a high-frequency grayscale clock. An AVR running at 16MHz can use its CLOCK-OUT pin for the latter. The chips 'speaks' an SPI-like protocol. Unfortunately some information is encoded in the timing of the LE input, so one cannot use fast hardware SPI for the hole transfer. The special sequences must be bit-banged. Nevertheless it is a rather affordable chip and does mostly what it should. There is an issue with the datasheet(s) that can be found on the web. The older ones document functions that definitely are not implemented in the current silicon.
Gracias a todos por vuestros comentarios y reconocimientos...
Por favor, no use esta imagen en los sitios web, blogs u otros medios de comunicación sin mi permiso explícito - Todos los derechos reservados ©.
Please don't use this image on websites, blogs or other media without my explicit permission - All Rights Reserved ©.