Soldering hot air gun

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STD Soldering hot air gun

License: Public Domain

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Update time： 2022-03-06 09:17:52

Creation time： 2021-07-29 04:39:56

Description

Hot air schematics. Circuit was drawn by manojBR 2018. IT WAS FINE TUNE TO CATER FOR DESIRE IMPROVEMENT. It is based on Triac driving by moc3021 and 4N25 for zero crossing with rectifier diode bridge, using Arduino programmed as brain behind it. Uses encoder for settings and navigation also as bottom pressed. It interfaces with 1602 screen, plan to modify to plead in v1.1 and dual screen of OLED OR ST7735 DRIVER TFT IMAGE SCREEN from texthbased-screen like 1602. Watch out

Design Drawing

schematic diagram

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Soldering Station iron.hot air gun
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PCB

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BOM

BOM download Purchase Parts

ID	Name	Designator	Footprint	Quantity
1	MOC3020	U10	DIP-6(7.12X6.4)	1
2	ARDUINO_NANO	U11	ARDUINO_NANO	1
3	MAX6675ISA+T	U12	SOIC-8_150MIL	1
4	Screen	H3	210S-1X4P	1
5	I2c Device	H18	210S-1X4P	1
6	Heatsink-1	KK1	531XXXXXXXX	1
7	BTB26-600	Q3	TOP3	1
8	100	R13,R15,R16	AXIAL-0.3	3
9	330	R17	AXIAL-0.3	1
10	4N25	U9	DIP-6(7.12X6.4)	1
11	2W10	D4	BRIDGE-WOB	1
12	2k	R8	AXIAL-0.3	1
13	24V AC	S1	SCREWTERMINAL-5MM-2	1
14	Pump	U3	JQC3F-05VDC-C	1
15	2N3904	Q2,Q4,Q5	TO-92(TO-92-3)	3
16	1N4007	D2,D5,D6	DO-41	3
17	1k	R10,R1,R2	PKG-0.25W RESISTOR	3
18	Pump	JP4	SCREWTERMINAL-3.5MM-3	1
19	Valve	U4	JQC3F-05VDC-C	1
20	Valve	JP1	SCREWTERMINAL-3.5MM-3	1
21	Power	U5	JQC3F-05VDC-C	1
22	Power	JP2	SCREWTERMINAL-3.5MM-3	1
23	1000µF	C1,C2	CAP-D3.0XF1.5	2
24	L7812CV-DG	2V	TO-220(TO-220-3)	1
25	100nF	CC1	RAD-0.2	1
26	10uF	CC2	CAP-D6.3XF2.5	1
27	+12v IN	S4	SCREWTERMINAL-5MM-2	1
28	Potentiometer Front	A3	HDR-3X1/2.54	1
29	Thermo Couple	S3	SCREWTERMINAL-5MM-2	1
30	Potentiometer Select	A1	HDR-3X1/2.54	1
31	Potentiometer Gun	A2	HDR-3X1/2.54	1
32	Arduino Extra IO	P1	HDR-7X2/2.54	1
33	Gun Trigger	H13	HDR-2X1/2.54	1
34	100R	R3,R5,R7	PKG-0.25W RESISTOR	3
35	10k	R4,R6,R9	PKG-0.25W RESISTOR	3
36	Power	H1	HDR-2X1/2.54	1
37	Temp Type Select	H2	HDR-2X1/2.54	1
38	SOLDERING IRON	S5	SCREWTERMINAL-5MM-2	1
39	0.1uF(104)	C3	0805	1