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STD electronic playground

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Update time: 2021-08-14 19:05:56
Creation time: 2021-07-20 15:30:56
Description

An electronic playground PCB featuring the ATmega2560 chip. Programmer built in via mini usb port ant the FT232R chip. The circuit includes a 5x5 led array, an MQ2 gas sensor, an analog to digital converter with the lm358 chip for the MQ2, active buzzer, passive buzzer, 2 push buttons, a HC-05 bluetooth chip, a 16x2 lcd display, 7 segment display, 3 servo connectors, and all the pins are brought out to a 40x2 female pin header.

Design Drawing
schematic diagram
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PCB
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ID Name Designator Footprint Quantity
1 active buzzer 2300Hz BUZ1 ACTIVE BUZZER 2300HZ 1
2 0.000002 C1 C0603 1
3 0.002 C2 C0603 1
4 100n C3 C0603 1
5 DC005-2.0MM DC1 DC-IN-TH_DC005 1
6 MQ2 I1 MQ2 1
7 HDR-M-2.54_1x3 J1,J2,J3 HDR-M-2.54_1X3 3
8 K2-3.6×6.1_SMD KEY1,KEY2 KEY-SMD_2P-L6.2-W3.6-LS8.0 2
9 LCD1602 LCD1 LCD1602 1
10 LED-0603_G LED1,LED2,LED3,LED4,LED5,LED6,LED7,LED8,LED9,LED10,LED11,LED12,LED13,LED14,LED15,LED16,LED17,LED18,LED19,LED20,LED21,LED22,LED23,LED24,LED25 LED0603_GREEN 25
11 LED-0603_R LED26 LED0603_RED 1
12 HDR-F-2.54_2x20 P1,P2 HDR-F-2.54_2X20 2
13 220 R1,R2,R3,R4,R5,R7 R0603 6
14 10K R6,R8 R0603 2
15 R_3386P_US RP1,RP2 RES-ADJ-TH_3386P 2
16 Push button S1,S2 PUSH_BUTTON 2
17 SEG-TH_0.56×1_Cathode SEG1 LED-SEG-TH_10P-L12.6-W19.0-P2.54-S15.24-BL 1
18 ATMEGA2560-16AU U1 TQFP-100_L14.0-W14.0-P0.50-LS16.0-BL 1
19 AMS1117-ADJ U2 SOT-223_L6.7-W3.5-P2.30-BR 1
20 L7805 U3 L7805 1
21 LM358 U4 SOP-8_L4.9-W3.9-P1.27-LS6.0-BL 1
22 Passive_Buzzer U5 PASSIVE_BUZZER 1
23 HC-05 U6 BT34P-SMD-1.5-26.9X13.0X2.2MM 1
24 FT232RL-REEL U7 SSOP-28_L10.2-W5.3-P0.65-LS7.8-BL 1
25 USB-MINI-SMD-9.2X9.4-H3.7 USB1 MINI-USB-SMD_C105424 1
26 49S X1 HC-49S_L11.0-W4.4-P4.88 1

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