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STD ESP-01S PCA9685 RGBWW LED-driver
License: CC-BY-NC 3.0
Mode: Editors' pick
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Update time：
2021-06-26 20:23:27
Creation time：
2020-12-20 22:56:42
Description
PCA9685 outputs is shift level with NPN-transistor to 12V (inverted so short single blink while booting ESPhome). Used transistor to fully open Mosfet otherwise it would generate a lot of heat. Nowq it keeps quite cool; ambient + few degrees. Would advice to ditch the linear voltage regulators though. 3.3V gets quite hot so dissipates amps. Not efficient. Or redesign +3.3V (and +5V) linear regulators or solder/hack swith mode power supply (those tiny Aliexpress regulators you can solder need voltage and cut pot trace (HW-613)).
PWM Ouputs of PCA9685 are near Input pins of 2N3904 transistors. You need to run short wires. The up side is you can buy complete module (like https://www.aliexpress.com/popular/pca9685.html )
Design Drawing
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | EK508V-06P | CN1 | CONN-TH_EK508V-06P | 1 |
| 2 | PCA9685 | U1 | PCA9685 | 1 |
| 3 | ESP-01 | U3 | WIFIM-TH_8P-L24.7-W14.4-P2.54 | 1 |
| 4 | Header-Male-2.54_1x5 | H2,H1 | HDR-TH_5P-P2.54-V-M | 2 |
| 5 | 1k | R7,R3,R5,R8,R10,R11 | AXIAL-0.4 | 6 |
| 6 | 10k | R1,R2,R4,R6,R9 | AXIAL-0.4 | 5 |
| 7 | 2N3904 | Q1,Q3,Q5,Q8,Q10 | TO-92-3_L5.1-W4.1-P1.27-L | 5 |
| 8 | LD1117v33 | U5 | LD1117V33 | 1 |
| 9 | φ3 Red | LED1 | LED-TH_BD3.5-P2.54-FD | 1 |
| 10 | Header-Male-2.54_1x8 | H3 | HDR-TH_8P-P2.54-V-M | 1 |
| 11 | R | Q6,Q2,Q4,Q7,Q9 | TO-220-3_L10.0-W4.5-P2.54-T | 5 |
| 12 | 100nF | C5,C2,C6,C3 | RAD-0.2 | 4 |
| 13 | DC005-2.0MM | DC2 | DC-IN-TH_DC005 | 1 |
| 14 | LM7805 | U6 | TO-220-3_L10.0-W4.5-P2.54-L | 1 |
| 15 | 10uF | C1 | CAP-TH_BD6.3-P2.50-D1.0-FD | 1 |
| 16 | 100uF | C4 | CAP-TH_BD6.3-P2.50-D1.0-FD | 1 |
| 17 | 282880-2 | U4 | CONN-TH_2P-P5.00_282880-2 | 1 |
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