29 open source boards using the LM741
Real designs built with the LM741, from public GitHub projects: a quick way to see how others power, decouple and connect it. Each board comes with its KiCad files, full parts list and a render — and you can simulate its firmware on HardLabs.
Microdigital - TK 2000
clemarfolly
236.8 × 169.8 mm195 parts2LNo license17
Synbal
Bad-Dog-Designs
71 × 108 mm105 parts2LGPL-2.014
Main
ceteras
299.2 × 180 mm352 parts2LMIT11
Digital-Stethoscope
darknight2163
113.1 × 41.3 mm30 parts2LNo license8
EuroClack Formant LFO panel
clacktronics
70.8 × 128.5 mm101 parts2LNo license4
Peoples permacomputer
genossen
208.3 × 146.1 mm121 parts2LCustom license2
M-NET-Thermostat
gajdi88
55.9 × 64.8 mm33 parts2LGPL-3.02
AVR/ArduinoSignalGenerator
ukmaker
99.8 × 100 mm115 parts2LNo license1
S2l board
jevans3142
91.4 × 99.1 mm61 parts2LNo license1- schematic only · 74 parts
Jensx1000
icnagy
74 partsCERN-OHL-S-2.01 
Red-Crab
aitesam961
90.8 × 45.5 mm77 parts4LGPL-3.00
Board
awkwardbunny
96.8 × 80.9 mm30 parts2LGPL-3.00
PID-position
azzamjhd
50 × 50 mm29 parts2LNo license0
Operational-Amplifier-Test-Board
MateoHadzimustafic
49 × 48.6 mm14 parts2LApache-2.00
Svi coleco adapter
popolonx
250 × 100 mm70 parts2LNo license7
EuroClack Formant LFO main board
70.8 × 100 mm92 parts2LNo license4
PlacaAlimentacion
Robot-Sumo
101.5 × 80.3 mm43 parts2LNo license1
LFO THT
BruteClaw
100 × 110 mm79 parts2LGPL-3.010
AIL TSAL
columbia-fsae
107.6 × 29.5 mm29 parts2LNo license1
Labnode0-10V
das-labor
47.5 × 25 mm16 parts2LNo license1- schematic only · 87 parts
Battery emulator design 0.1
KonnorKinnaman
87 parts2LNo license1 
Amplificador sumador
tidus747
68.8 × 40.6 mm9 parts2LGPL-3.012
Amplificador inversor
29 × 37.6 mm7 parts2LGPL-3.012
Amplificador en configuración no inversora
41.6 × 29.1 mm7 parts2LGPL-3.012
ADSR
telec16
25 × 200 mm49 parts2LNo license16
Amplificador de corriente
42.3 × 20.4 mm6 parts2LGPL-3.012
Convertidor de tensión a corriente
41.6 × 31.1 mm6 parts2LGPL-3.012
Pranav's Test Board
parsa-novin
20.5 × 2.6 mm6 parts2LNo license2
Convertidor de corriente tensión
34.3 × 36.1 mm4 parts2LGPL-3.012
The LM741 in open source designs
The gallery holds 29 open source boards using the LM741 from 23 GitHub repositories; a typical one measures about 70.8 × 64.8 mm and carries around 43 components.
96% are two-layer designs, the rest use four layers or more, and 48% carry an open source license.
The most starred is Microdigital - TK 2000 by clemarfolly.
Parts used alongside the LM741
Microcontrollers on boards using the LM741
What boards using the LM741 are built for
LM741: common questions
Where can I find a LM741 reference design?
Each of the 29 boards on this page is a real design using the LM741. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
What parts are used alongside the LM741?
The 74LS04, LM324, 74LS08, 74LS11 and 74LS138 appear in the most repositories here.
Which microcontrollers do boards using the LM741 use?
Most are built on AVR/Arduino (1).
How big is a typical board using the LM741?
The median is 70.8 × 64.8 mm, and 96% are two-layer designs.
What is the most popular open source board using the LM741?
By GitHub stars, Microdigital - TK 2000 by clemarfolly, with 17 stars.
Can I simulate one of these boards using the LM741 before building it?
Yes. HardLabs turns a board's netlist and BOM into a working simulation, so you can boot and test firmware against it with no hardware on your desk.