HardLabs

Openradfan

andrekuehne·openradfan·KiCad/openradfan.kicad_pcb

Openradfan PCB layout, top view — open source board by andrekuehne

About the Openradfan PCB

Openradfan is an open source PCB design by andrekuehne, published on GitHub under the MIT license. It is a 2-layer board measuring 65 × 70 mm, with 43 components from 28 distinct parts.

Other key parts include the SN74AHCT125N, AP63205WU and BTS462TATMA1. By type, the board carries 10 connectors, 7 capacitors, 7 resistors, 5 test points, 5 diodes and 3 ICs.

It belongs with the iot & wireless, sensors and power & battery designs in this gallery.

From the project

An ESPHome-driven controller for radiator fans to improve heat output

Classical radiators (K2/K3) typically require relatively high flow temperatures to heat up a room. Using forced convection can significally enhance their efficiency, especially at low flow temperatures. While there are a number of commercial solutions available, these did not need my needs. They are either too loud while running or switching on/off using a relais, don't properly switch at low flow temperatures, are too expensive or simply not powerful enough. Hence, I set out to build my own solution using standard 120/140mm PWM-capable PC fans. High-end fans run at low speeds (<500 RMP) are…

Openradfan, from the project README
From the project README

Main components on the Openradfan

SN74AHCT125NAP63205WUBTS462TATMA1

Openradfan bill of materials (BOM)

43 components, 28 distinct parts.

QtyPartRefs
1
SN74AHCT125N
74AHCT125
U1
1
AP63205WU
U2
1
BTS462TATMA1
U3
1
AO3401A_C347476
Q1
2
DB141V-2.54-3P
CN1, CN2
8
0470531000
Fan_CPU_4pin
J1, J2, J3, J4, J5, J6, J7, J8
1
DC-005-5A-2.0
DC1
1
SMD1812B260TF/16
F1
1
210S-1*5P L=11.6MMGold-plated black
H4
1
Header-Male-2.54_1x4
H5
1
GND
TP1
1
+3.3V
TP2
1
+5V
TP3
1
+12V_Fan
TP4
1
+12V
TP5
2
BAT54WS_C7502694
D1, D2
1
SS16
D3
1
MMSZ4696T1G
D4
1
SMF14CA_C1851346
D5
1
FNR4020S4R7MT
L1
Show 8 more
QtyPartRefs
1
0.1uF
C1
1
0.1 µF
C2
3
22 uF
C3, C4, C6
1
0.1 µF
C5
1
HV1E477M0810PZ
C7
5
10k
R1, R2, R3, R5, R6
1
4.7k
R4
1
1k
R7

Openradfan design files

The KiCad project lives in the andrekuehne/openradfan repository on GitHub; these links point at the commit this page was built from.

Openradfan: common questions

How big is the Openradfan PCB?

The Openradfan measures 65 × 70 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Openradfan?

43 components, from 28 distinct parts. The full bill of materials is listed on this page.

Where can I download the Openradfan design files?

From the andrekuehne/openradfan repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Openradfan design in my own project?

Yes, under the terms of its MIT license, which andrekuehne chose for the repository.

Similar boards