Difference between revisions of "BiLed"

Latest revision as of 16:51, 11 September 2015

• s

Table

Battery Boost

• SPARKFUN LiPower - Boost Converter

   TPS61200
   Input voltage 0.3-5.5V
   Output voltage 3.3 or 5V
   5V @ 600mA max
   3.3V @ 200mA max
   Undervoltage lock out at 2.6V
   Quiescent current, less than 55uA
   LiPo JST connector or 2-pin header power input\
   Inductor: 4.7uH, 1.2A Sumida CDRH2D18
   Over temperature protection

• TPS61070 Adjustable, 600-mA Switch, 90% Efficient PFM/PWM Boost Converter in ThinSOT-23

90% Efficient Synchronous Boost Converter
   75-mA Output Current at 3.3 V From 0.9-V Input
   150-mA Output Current at 3.3 V From 1.8-V Input
   Device Quiescent Current: 19 µA (Typ)
   Input Voltage Range: 0.9 V to 5.5 V
   Adjustable Output Voltage Up to 5.5 V

• MCP1640 0.65V Start-up Synchronous Boost Regulator with True Output Disconnect or Input/Output Bypass Option

• PIN COMPATIBLE TO TPS1670 (noticed by nx)

• Up to 96% Typical Efficiency
• 800 mA Typical Peak Input Current Limit
-IOUT > 100 mA @ 1.2V VIN, 3.3V VOUT
-IOUT > 350 mA @ 2.4V VIN, 3.3V VOUT
-IOUT > 350 mA @ 3.3V VIN, 5.0V VOU
• Low Start-up Voltage: 0.65V, typical 3.3V@ 1 mA
• Low Operating Input Voltage: 0.35V, typi3.3VOUT @ 1 mA
• Adjustable Output Voltage Range: 2.0V 
• Maximum Input Voltage   VOUT < 5.5V

• MCP1640 Single Quad-A Battery Boost Converter Reference Design

File:Bat-boost-conv-1.jpg

• at digikey $0.44 @100pcs

• AS1337 Buck-Boost Converter IC 200mA DCDC Step-up Converter with Buck Mode

   Input Voltage Range: 0.65V to 4.5V
   Output Voltage Range: 2.5V to 5.0V
   Delivers 200mA @ 3.3V (from two AA Cell)
   Up to 97% Efficiency
   High-Speed Fixed-Frequency: 1.2MHz
   Internal PMOS Synchronous Rectifier
   Automatic Powersave Operation
   Shutdown Current < 1μA
   TDFN (3x3mm) 8-pin Package

Infrared

• Elektor Jan.2002 Infrared Transceiver for the PC
• IR+UART Elektor 2007 7-8, page 115
• mbed RC5 receiver

00022     Usage and assumptions:
00023     Based on TSOP 1738 IR device, Vcc to 5Volt, Gnd to Gnd, Out has pull-up of 10K
00024     to Vcc and Out has diode (Cathode to Out) connected to pin (p16) (Anode to p16)
00025     and pin (p16) has mode PullUp
00026     
00027     This will allow a "standard" RC5 device to be used to read it transmitted codes.
00028     Still work in progress (in due time) to add newer rc6 devices
00029     
00030     Excellent source on RC5 protocol: http://www.ustr.net/infrared/infrared1.shtml
00031  */
00032  
00033 #include "mbed.h"
00034 #include "RC5Detect.h"
00035 
00036 RC5Detect  rc5 ( p16, PullUp);
00037 
00038 DigitalOut led1( LED1 );
00039 
00040 int main() {
00041 
00042     //rc5.setAssertValue( 0 );
00043     rc5.setDelaySample(4820);
00044     rc5.setIntervalSample(1778);
00045 
00046     while(1) {
00047         if (rc5.getReadyState()) {
00048             printf("RC5 received, address = %d, command = %d\n", rc5.getRC5Address(), rc5.getRC5Command());
00049             rc5.setReadyState(0);
00050         }
00051         led1 = 1;
00052         wait(0.2);
00053         led1 = 0;
00054         wait(0.2);
00055     }
00056 }

• Excellent source on RC5 protocol

Receivers

• TSOP38238SS1V lowest cost Infrared receiver at mouser

• NOT SMD

 
1: 	0,52 € 	
10: 	0,479 € 	
100: 	0,413 € 	
250: 	0,371 € 	
500: 	0,347 € 	
1.000: 	0,33 €

• VSOP58438 QFN8 Preamplifier Circuit for IR Remote Control

• Add external photodiode

1: 	0,429 € 	
10: 	0,371 € 	
100: 	0,297 € 	
250: 	0,272 € 	
500: 	0,231 € 	
1.000: 	0,198 €
3.000: 	0,165 €

• TSOP75338WTR

File:INFRARED-1.jpg

1: 	0,825 € 	
10: 	0,751 € 	
100: 	0,66 € 	
250: 	0,61 € 	

Phototransistor

• PT26-21B/TR8 EVERLIGHT SMD photo-transistor peak 930nm covers infrared and visible spectrum

1: 	0,115 € 	
50: 	0,098 € 	
100: 	0,073 € 	
500: 	0,052 € 	
1.000: 	0,039 €

Photodiodes

• APT2012F3C KINGBRIGHT 940nm 120deg 2.0mmx1.25mm SMT LED,0.75mm thickness

• EASY TO PICK-PLACE
• 120 deg

1: 	0,099 € 	
10: 	0,096 € 	
100: 	0,086 € 	
200: 	0,083 € 	
500: 	0,078 € 	
1.000: 	0,066 €
2.000: 	0,061 €

• EL-PD204-6B EVERLIGHT 3mm through-hole photodiode

PD204-6B is a high speed and high sensitive PIN photodiode

In a standard 3mm plastic package.

The device is matched to infrared emitting diode.

1: 	0,148 € 	
50: 	0,123 € 	
100: 	0,09 € 	
500: 	0,065 € 	
1.000: 	0,057 €

• QEC113 Infrared led 930nm 18degrees 3mm THROUGH-HOLE

1: 	$0.27 	
25: 	$0.242 	
100: 	$0.217 	
250: 	$0.181 	
500: 	$0.156 	
1,000: 	$0.127

• IR26-21C/L110/TR8 EVERLIGHT infrared led 940nm SMD

]
1: 	$0.151 	
50: 	$0.128 	
100: 	$0.086 	
500: 	$0.067 	
1,000: 	$0.051

Photo-transistor pin-diode difference

• Photodiodes & Phototransistors
• http://www.physicsforums.com/showthread.php?t=179131

iDropper

• Very Low-Cost Sensing and Communication Using Bidirectional LEDs