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exposer

1 year ago 127
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Description

Ultraviolet lamp/LED controller used for DIY PCB creation. It can be used for photoresist expositioning on both PCB sides simultaneously. Two LED channels can be enabled separately, since that everything is controlled by the firmware.

Ultraviolet LED drivers and LEDs are not present on the schematics, so you can use any two drivers up to 1.5A per channel. It is due to limitaion of ULN2003 Darlington array with 500mA per channel max load.

It supposed to be used in some deep box with LEDs on the both sides of it. BUTTON_1 is controlling a box case open position.

It's firmware located on the GitHub repo: https://github.com/alexander-kalashnikov/exposer

Documents

Exposer

exposer

BOM

ID Name Designator Footprint Quantity
1 20 C1,C2 0805 2
2 100n C3,C5,C8,C9,C10,C12 0805 6
3 4.7u C6-VDD3 0805 1
4 32.768KHz X2* SMD-3215_2P 1
5 100 C6*,C7* 0603 2
6 8MHZ X1 OSC-S7050_4P 1
7 2.54_1x3 UART HDR-3X1/2.54 1
8 ROTARTY_ENCODER SW1 ROTARY_ENC_PLAIN 1
9 1k R1,R2 0603 2
10 LP3985IM5-3.3/NOPB* U2 SOT-23-5 1
11 100n* C11 0805 1
12 470u C13 CASE-D_7343 1
13 2.54_1x4 TM1637-DISPLAY HDR-4X1/2.54 1
14 Piezo Buzzer SG1 BUZZER-12MM 1
15 1x6_2.54 DEBUG DIP-1X6P-2.54MM-M 1
16 10u C14 0805 1
17 0.1u C15 0603 1
18 100k R3 0603 1
19 3.9n C16 0603 1
20 6.8k R4 0603 1
21 10k R5 0603 1
22 94k* R6,R7 0603 2
23 10n C17 0603 1
24 Terminal_2P/5.08 VCC 5.08-2P_SCREW_TERMINAL 1
25 10mH L1 1812 1
26 0* R8 0805 1
27 MMBT5551 Q1 SOT-23(SOT-23-3) 1
28 1k R9 0805 1
29 ULN2003G-S16-R* U4 SOP-16_150MIL 1
30 2.54_1x4* DRIVERS HDR-4X1/2.54 1
31 2.54_1x3* BUTTON HDR-3X1/2.54 1
32 MP2307DN-LF-Z U3 SOP-8_EP_150MIL 1
33 STM32F103C8T6 U1 LQFP-48_7X7X05P 1

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