Difference between revisions of "User:Chotee/NoFeedback-ManagementIntervention"
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Alternative name: | Alternative name: | ||
| − | * Management Intervention | + | * Free-Runner / Management-Intervention |
== Parts == | == Parts == | ||
| Line 15: | Line 15: | ||
** max led forward current is 20mA. | ** max led forward current is 20mA. | ||
** RGBs forward-voltage oscillates between 3.2v and 3.8v (±15%) | ** RGBs forward-voltage oscillates between 3.2v and 3.8v (±15%) | ||
| − | ** LEDs max | + | ** LEDs max continuous current at 20mA. |
* 22x22 leds (484) [sqrt(500) = 22.36..] | * 22x22 leds (484) [sqrt(500) = 22.36..] | ||
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| − | + | === 20v supply === | |
| − | |||
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| − | === 20v === | ||
* 20v/3.8 (V-max-led-forward) = 5.2 LEDs; 5 LEDs in a chain. | * 20v/3.8 (V-max-led-forward) = 5.2 LEDs; 5 LEDs in a chain. | ||
* There are 96.8 chains [484/5] | * There are 96.8 chains [484/5] | ||
| Line 36: | Line 26: | ||
* Total Current: 20mA * 97 = 1.94A | * Total Current: 20mA * 97 = 1.94A | ||
* Total power: 1.94A * 20v = 38.8w | * Total power: 1.94A * 20v = 38.8w | ||
| + | * 22 leds; 4x5led chain + 1x2led chain. | ||
| + | ** 2 led chain needs a 470ohm ¼Watt resistor (or 2x1000ohm in paralel) to drop the voltage. | ||
== Components == | == Components == | ||
| Line 42: | Line 34: | ||
* Rs = 10 | * Rs = 10 | ||
* Opamp >20v; | * Opamp >20v; | ||
| − | |||
** *Single* channel opamp: LM321 -- €1.99 (100pcs) -- https://nl.aliexpress.com/item/Free-Shipping-100PCS-100-NEW-LM321MFX-LM321MF-LM321-A63A-SOT23-5/1924012475.html -- http://www.ti.com/lit/ds/symlink/lm321.pdf | ** *Single* channel opamp: LM321 -- €1.99 (100pcs) -- https://nl.aliexpress.com/item/Free-Shipping-100PCS-100-NEW-LM321MFX-LM321MF-LM321-A63A-SOT23-5/1924012475.html -- http://www.ti.com/lit/ds/symlink/lm321.pdf | ||
* Mosfet. >20v; >20mA: | * Mosfet. >20v; >20mA: | ||
** From the OPL: BSS138W-7-F; 50V; 200mA -- €1.36 (100pcs) -- https://nl.aliexpress.com/item/50PCS-BSS138LT1G-SOT23-BSS138-SOT-MOSFET-SMD-new-and-original-IC-free-shippin/32518915182.html -- http://www.onsemi.com/pub/Collateral/BSS138LT1-D.PDF | ** From the OPL: BSS138W-7-F; 50V; 200mA -- €1.36 (100pcs) -- https://nl.aliexpress.com/item/50PCS-BSS138LT1G-SOT23-BSS138-SOT-MOSFET-SMD-new-and-original-IC-free-shippin/32518915182.html -- http://www.onsemi.com/pub/Collateral/BSS138LT1-D.PDF | ||
| + | * a 100nF capacitor as small voltage buffer. | ||
== Circuit == | == Circuit == | ||
Revision as of 21:18, 4 April 2018
1mx1m screen of RGB lights that slowly and independently change colour. All patterns are just your mind playing tricks on you.
Alternative name:
- Free-Runner / Management-Intervention
Parts
- [Ordered] LEDs - https://nl.aliexpress.com/item/free-shipping-500pcs-5mm-Straw-Hat-Colorful-Slow-Flashing-Flash-RGB-Red-Blue-Green-LED-Leds/32231092414.html
- 11 x duct (11*€3.19) https://www.gamma.nl/assortiment/kabelgoot-kunststof-wit-20x10-mm/p/B651828
- 10 Bouten M5x80mm €8 - https://www.gamma.nl/assortiment/gamma-slotbout-m6x80-mm-verzinkt-20-stuks/p/B458213
- 1000x1000mm Plexiglas - €23 - https://www.gamma.nl/assortiment/martens-acrylplaat-transparant-100x100-cm/p/B151681
- 2 x 1m 5mm staal/hout
Electronics
- 500 Slow color changing RGB leds.
- max led forward current is 20mA.
- RGBs forward-voltage oscillates between 3.2v and 3.8v (±15%)
- LEDs max continuous current at 20mA.
- 22x22 leds (484) [sqrt(500) = 22.36..]
20v supply
- 20v/3.8 (V-max-led-forward) = 5.2 LEDs; 5 LEDs in a chain.
- There are 96.8 chains [484/5]
- Vmax = 5 * 3.8Vf = 19v; 1v left.
- Vmin = 5 * 3.2Vf = 16v; 4v left.
- current limit power-max: 4v*20mA = 80mW.
- Total Current: 20mA * 97 = 1.94A
- Total power: 1.94A * 20v = 38.8w
- 22 leds; 4x5led chain + 1x2led chain.
- 2 led chain needs a 470ohm ¼Watt resistor (or 2x1000ohm in paralel) to drop the voltage.
Components
- R1 = 100k
- R2 = 1k8
- Rs = 10
- Opamp >20v;
- *Single* channel opamp: LM321 -- €1.99 (100pcs) -- https://nl.aliexpress.com/item/Free-Shipping-100PCS-100-NEW-LM321MFX-LM321MF-LM321-A63A-SOT23-5/1924012475.html -- http://www.ti.com/lit/ds/symlink/lm321.pdf
- Mosfet. >20v; >20mA:
- From the OPL: BSS138W-7-F; 50V; 200mA -- €1.36 (100pcs) -- https://nl.aliexpress.com/item/50PCS-BSS138LT1G-SOT23-BSS138-SOT-MOSFET-SMD-new-and-original-IC-free-shippin/32518915182.html -- http://www.onsemi.com/pub/Collateral/BSS138LT1-D.PDF
- a 100nF capacitor as small voltage buffer.
Circuit
[from http://www.falstad.com/circuit/circuitjs.html]
$ 1 0.000005 10.20027730826997 50 5 50 w 544 592 416 592 0 w 416 576 416 592 0 v 416 576 416 176 0 0 40 20 0 0 0.5 g 416 592 416 624 0 w 416 176 544 176 0 w 544 176 544 336 0 f 688 464 752 464 0 1.5 0.02 162 752 272 752 320 1 3.2 1 0 0 0.01 162 752 320 752 368 1 3.2 1 0 0 0.01 162 752 368 752 416 1 3.2 1 0 0 0.01 r 752 528 752 592 0 10 w 544 592 608 592 0 w 608 592 752 592 0 w 544 560 544 592 0 w 752 480 752 528 0 w 752 528 608 528 0 w 608 480 608 528 0 w 544 448 608 448 0 a 608 464 688 464 1 12 0 1000000 0.11134962704993533 0.11137629276054098 r 544 352 544 448 0 100000 w 544 352 544 336 0 r 544 448 544 560 0 560 162 752 224 752 272 1 3.2 1 0 0 0.01 162 752 176 752 224 1 3.2 1 0 0 0.01 w 752 416 752 448 0 w 752 416 688 416 0 c 688 416 688 176 0 1.0000000000000001e-7 -14.836678863009816 w 544 176 688 176 0 w 688 176 752 176 0 o 26 64 0 4099 20 0.00009765625 0 2 26 3 o 6 64 0 4099 20 0.05 1 2 6 3 o 10 64 0 4099 0.625 0.05 2 2 10 3
