OId Hardi sprayer relays

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STD OId Hardi sprayer relays

Other_Modules

Arduino

License: Public Domain

Mode:

Editors' pick

Update time： 2022-12-18 11:11:12

Creation time： 2021-02-06 13:01:21

Description

A relay PCB for an old Hardi sprayer control box.

It uses an Atmel 328p microcontroller with Arduino bootloader installed, and can communicate to AgIO using either serial (with an FTDI converter plugged into the correct port), or via CANbus as in my custom AgOpenGPS implementation.

Design Drawing

schematic diagram

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relay_control
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PCB

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PCB_2021-02-06_22-54-20
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BOM

BOM download Purchase Parts

ID	Name	Designator	Footprint	Quantity
1	4.7K	R34	AXIAL 1/4W VERTICAL	1
2	10uF	C21	CAP-TH_BD4.0-P1.50-D0.8-FD	1
3	10K	R3,R4,R6,R5,R2,R1,R0,R20	AXIAL 1/4W VERTICAL	8
4	FTDI/CH340 header	FDTI1	FTDI/CH340 HEADER	1
5	L7805CV	REG	TO-220(TO-220-3)	1
6	Microchip AtMega 328P-PU	U1	ATMEGA 328P-PU	1
7	BUZZER	SG1	BUZZER-12MM-NS-KIT	1
8	FUSE HOLDER_5X20_PCB	F3,F4,F6,F5,F1,F2	FUSE HOLDER_5X20_PCB	6
9	16MHz	X1	RESONATOR-PTH	1
10	2N7000	Q3,Q4,Q6,Q5,Q2,Q1,Q0	TO-92-3_L4.9-W3.7-P1.27-L	7
11	330nF	C20	CAP-TH_L7.3-W4.8-P5.00-D0.5	1
12	Header 1x7	H1	HEADER 1X7	1
13	HF3FA/012	K0,K1	RELAY-TH_HF3FA/012-ZST	2
14	WS2812B	LED1	LED-SMD_4P-L5.0-W5.0-BL	1
15	Screw_terminal_3.5mm_5P	J1,J2,J11,J12,J13	SCREW_TERMINAL_3.5MM_5P	5
16	1N4001	D20,D3,D4,D6,D5,D2,D1,D0	DIODE-1N4001	8
17	510	R31	AXIAL 1/4W VERTICAL	1
18	RED	LED3,LED4,LED5,LED6,LED2	LED-TH_BD5.8-P2.54-L-RD	5
19	HFD3/12	K3,K4,K6,K5,K2	RELAY-TH_HFD3-XXXXX-XXX	5
20	2.2K	R33	AXIAL 1/4W VERTICAL	1
21	100nF	C4,C22,C2	0.1UF-50V-CERAMIC	3
22	330	R30	AXIAL 1/4W VERTICAL	1
23	220	R13,R14,R15,R16,R12	AXIAL 1/4W VERTICAL	5
24	1k	R32	AXIAL 1/4W VERTICAL	1