Difference between revisions of "10W RGB LED Driver Board Assembly (RGB version)"
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3 R1,R2,R3 0.33R resistor | 3 R1,R2,R3 0.33R resistor | ||
3 R4,R5,R6 10K resistor (used to be 4.7K) | 3 R4,R5,R6 10K resistor (used to be 4.7K) | ||
| − | 1 R7 or R8 | + | 1 R7 or R8 0.33R or 0R resistor |
1 C1 47uF/50V capacitor | 1 C1 47uF/50V capacitor | ||
1 C2 0.1uF capacitor | 1 C2 0.1uF capacitor | ||
</pre> | </pre> | ||
| − | [[File: | + | [[File:10w-xor-v1.jpg]] |
| − | [[File:10w- | + | [[File:10w-xor-v1-pcb.jpg]] |
| + | [[File:10w-xor-v1-bom-txt.jpg]] | ||
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| − | + | '''Polarity''' | |
| − | + | Input polarity is determined by soldering '''0R (0ohm)''' resistor (one black band) either as '''R7''' or '''R8'''. | |
| + | For '''positive input''', meaning positive input voltage (3.3V-5V) will turn the LED on, solder '''0R''' in '''R7''' position. '''Input voltage cannot exceed 5V'''. | ||
| − | ''' | + | For '''negative input''', meaning shortening input to GND will turn the LED on, solder '''0R''' in '''R8''' position. LED will be off when input is open or at 3.3V-5V. This configuration is often used with open collector/drain drivers designed for common anode (+) lights. |
| − | + | '''Older kits were shipped with 0.33R resistors instead of 0R and that's why R7/R8 on all images is 0.33R and not 0R.''' | |
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Latest revision as of 15:06, 29 August 2016
BOM
QTY Part Description 3 IC1,IC2,IC3 PT4115 constant current buck driver (soldered) 1 IC4 78L05 LDO 1 IC5 74HC86 (soldered) 3 L1,L2,L3 100uH inductor, 6x8mm, 500ma 3 D1,D2,D3 1N5819 diode 3 R1,R2,R3 0.33R resistor 3 R4,R5,R6 10K resistor (used to be 4.7K) 1 R7 or R8 0.33R or 0R resistor 1 C1 47uF/50V capacitor 1 C2 0.1uF capacitor
Polarity
Input polarity is determined by soldering 0R (0ohm) resistor (one black band) either as R7 or R8.
For positive input, meaning positive input voltage (3.3V-5V) will turn the LED on, solder 0R in R7 position. Input voltage cannot exceed 5V.
For negative input, meaning shortening input to GND will turn the LED on, solder 0R in R8 position. LED will be off when input is open or at 3.3V-5V. This configuration is often used with open collector/drain drivers designed for common anode (+) lights.
Older kits were shipped with 0.33R resistors instead of 0R and that's why R7/R8 on all images is 0.33R and not 0R.