License

Public Domain

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AC Fan Speed Ctlr - DHT22 - ExtPWR

3 years ago 841
  • Description
  • Documents
  • BOM
  • Attachments
  • Members
  • Comments

Description

AC Fan Seed Controller with DHT22 (or DHT11) Temp sensor and LCD Display of Temp. UART or I2C options for 16x2 LCD diplay shown. Uses External 240V to 12V DC PSU to provide power to the Arduino Vin pin and the 5V output from the Arduino to provide power for the DHT22 and ZC Probe.

Documents

AC Fan Spd Schematic

AC Fan Spd Ctl - SLOT PCB

BOM

ID Name Designator Footprint Quantity
1 1N4001 D1,D2 DO35-7 2
2 BT137F T1 TO-220_UO 1
3 240V-24V CVT T2 TRANS-HDR-3x1+2x1-OP 1
4 DIAC D4 INLINE_PAD_1_UO 1
5 0.1u C1 INL-2PIN-1x7_UO 1
6 470 R3 INLINE_PAD_1_UO 1
7 360 R4 R6-1W 1
8 1k R1 R6-1W 1
9 2k2 R2 INLINE_PAD_1_UO 1
10 MOC3021M U2 DIP6-300-UO 1
11 4N25 U3 DIP6-300-UO 1
12 1k R5 INLINE_PAD_1_UO 1
13 Arduino Nano V3 U4 DIP30-600_UO 1
14 Mains AC Power U5 AC-HDR-2x1 1
15 FAN U6 AC-HDR-2x1 1
16 16x2 LCD Serial (UART) LCD2 HDR1X3_UO 1
17 16x2 Serial LCD (I2C) LCD1 HDR1X4_UO 1
18 DHT22 U7 HDR1X3_UO 1
19 Analogue Temp Sensor U8 HDR1X3 1
20 SIP1 P1,P2 HDR1X1 2

Attachments

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Members

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