Material Dispenser

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STD Material Dispenser

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Update time： 2017-07-20 20:33:40

Creation time： 2017-06-19 09:32:30

Description

A food dispenser for domestic animals. It features: 1. Power from a wall adaptor or an internal rechargeable battery. 2. LCD display and a keypad for configuring. 3. SD card to save settings. 4. Stepper motor to dose food. 5. Food level monitoring. 6. Food weight left in containers monitoring. 7. Power-saving features.

Design Drawing

schematic diagram

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Main Schematic
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BOM

BOM download Purchase Parts

ID	Name	Designator	Quantity
1	2 Relay Board	U1	1
2	TP4056 + Protection	IC	1
3	18650; 3.7V 2.2A	V1	1
4	Nokia 5110 LCD module	LCD1	1
5	MicroSDcard	P1	1
6	KEYPAD-4X4	U2	1
7	NodeMCU ESP8266-12E Amica V2	U3	1
8	ARDUINO NANO v3	U4	1
9	HC-SR04	U5	1
10	ULN2003	U7	1
11	4-Phase Stepper Motor	U8	1
12	Load cell connector 1x4	P2,P3	2
13	HX711	U10,U11	2
14	NO	NO	1
15	IRF4905	Q2,Q4,Q5	3
16	1k	R4,R5,R6,R1	4
17	IRF4950	Q3	1
18	DC-DC Step-up	U6,U9	2
19	SPEAKER	SP1	1
20	1N5820-D	D1	1
21	680uF	C1	1