This is an educational circuit to measure resistance (ohm meter) without using any microcontroller.
It can measure resistance from 10K up to 9.9M.
You can order this PCB from PCBWay:
Parts list:
IC 40110 (7pcs)
IC 4017
IC 4013
IC LM358
LED
IC 7805 (With heatsink)
Transistor 2N2222 (2pcs)
Mosfet IRFZ44N
7segment display (7pcs)
Crystal 4 MHz
Capacitor 100nF (3pcs)
Capacitor 100uF (2pcs)
Capacitor 1uF 400v CBB
Capacitor 220pF (2pcs)
Resistor 470 ohm (50pcs)
Resistor 6.8K
Resistor 10K
Resistor 20K
Resistor 1K
Resistor 2M
Resistor 120K
Resistor 5.6K
Resistor 3.3K
Resistor 150 ohm
Resistor 100K
Resistor 680K
Push tactile Switch 6 pins
IC Socket 8pins
IC Socket 14pins
IC Socket 16pins (8pcs)
ZIF Socket 14pins
Circuit:
You can download this circuit with higher resolution as PDF file from here:
https://drive.google.com/file/d/1t-9Xey-s2JFWnAIgs_u6tn-R1tBjlrR2/view?usp=sharing
Video:
