A list of components in my inventory.

Integrated Circuits[edit | edit source]

Timers, drivers[edit | edit source]

Item Quantity Description
ULN2803A 5 8 NPN Darlington Transistor Array, 50V, 0.5A, for TTL/5V CMOS
ULN2003A 7 NPN Darlington Transistor Array, 50V, 0.5A,
MOC3023 1 Optoisolator
MAX232 10 RS-232 driver
NE555 6 555 timer
TLC5940 10 16-channel constant-current sink LED driver

Digital Logic, Microprocessor, RAM, EEPROM[edit | edit source]

Item Quantity Description
40XX

01, 11, 13, 17, 40, 66, 93, 520, 511

74164 2 8-bit shift register
74154 1 4-Line to 16-Line Decoder
74157 4
74x

151, 153, 175, 193, 245, 14, 20, 42, 48, 74, 83, 86, 32, 00, 02, 04, 10, 08, 164, 273, 373

SN74HC595 10 8-bit shift register, tristate output
Z8400BB1/Z80bcpu 1 Z80, old stock
6502 (old) 1 Original old stock
W65C02 5 Fake western design 6502
HM6116P-2 1 2,048-word x 8bit High Speed CMOS Static RAM
HM628128ALP-7 4 131,072-word x 8-bit CMOS Static RAM
HM65256BLP 1 32,768-word x 8-bit Static RAM
AT28C16 5 2,048-word by 8-bit EEPROM

Op Amps[edit | edit source]

Item Quantity Description
LM324 10 Single Supply Quad Operational Amplifier, 0.5V/us
LM386 (SOP8) 20 Low Voltage Audio Power Amplifier
LM339 10 Single supply quad voltage comparator
LM1875 10 20w audio power amplifier
LM6181IN 2 Current feedback amplifier
NE5532 10 Dual Low-Noise Operational Amplifiers

Suspect. Got slew of 8V/4us. Should be 9V/us; ~4x slower

TDA7267 5 2w mono amplifier
TL072CP 10 JFET-Input Dual Op Amp

Fake? Got a slew of 8V/42us. Should be 13V/us; ~68x slower

TL082 10 JFET-Input Dual Op Amp, 13V/us

Fake? Got a slew of 8V/42us. Should be 13V/us; ~68x slower

UA741 3 Remaining good opamps

Miscellaneous[edit | edit source]

Item Quantity Description
16MHz Crystal 1
4MHz Crystal 1
1.8432MHz Crystal 1

Power[edit | edit source]

Regulators, supervisors, chargers[edit | edit source]

Item Quantity Description
KA75330 8 Voltage detector
LM317 10 TO-220

2 TO-90

Adjustable linear voltage regulator
LM1117 6 Linear Regulator
LM7805 10 5V Voltage Regulator
LM7905 10 -5V Voltage Regulator
MCP1700 8 3.3v CMOS LDO voltage regulator
MT3608 Module 4 DC-DC Boost Module
XL6009 Module 1 DC-DC Boost module
LM2596 Module 1 DC-DC Buck module
ZY12PDN 1 USB-C power module
MB102 breadboard psu 1 DC 7-12V to 3.3/5V
LM2596 Mini Module 2 on order Mini DC-DC 3A buck module
LM2596 Module 4 on order DC-DC 3A buck module
USB boost module 6 DC 0.9-5V boost module
TP4056 charge board 2 USB micro Lithium battery charge module
TP4056 charge board 5 USB micro Lithium battery charge module (protected)

Fuses[edit | edit source]

Item Quantity Description
0.2A 10 250V
0.5A 10 250V
1A 10 250V
2A 10 250V
3A 10 250V
5A 10 250V
6A 10 250V
8A 10

8

250V

250, with leads

10A 10 250V
15A 10 250V

Diodes, Rectifiers[edit | edit source]

Item Quantity Description
1N4001 100 50V diode
1N4002 100 100V diode
1N4007 4 1000V diode
1N4148 200 100V signal diode
1n47XX 5 each Zener diodes of various voltages.

3V 3.3V 3.6V 3.9V 4.7V 5.1V 5.6V 6.2V 10V 12V 13V 15V 18V 27V 30V

1N5817 90+ 20V schottky diode

Connectors[edit | edit source]

Item Quantity Description
1x header male-male 20 1x40 header, male-male
2x header male-male 5 2x40 header, male-male
2x header male-female 2 2x40 header, male-female
1x8 male-female header 10+ various, for wemos d1 modules
USB (micro) male 20+
USB-C male 5
USB (micro) female, breakout adapter 5 Micro USB breakout adapter, for testing or placing USB input elsewhere
2.5mm x 2.1mm male 5
2.5mm x 2.1mm female 5
banana jack male 5
banana jack female 5
probe clip 10
alligator clips (small) 10
Terminal block 20

20

20

2 pin

3 pin

4 pin

Switches, relays, buttons[edit | edit source]

Item Quantity Description
AQH2223 10 Need to Test Solid state relay
HK4100F 5+ 5V DC Signal Relay
Latching Switch 14 8x8mm latching, white+blue
tactile push buttons 3

7

9

short

tall

large, short

DIP switches 9

7

4x

8x

ON/OFF Rocker Toggle switch 6
Rotary encoder 4 KY-040 Rotary Encoder Module with 15×16.5 mm with Knob Cap
TTP223 Capacitive Touch Buttons 5 These are super tiny

Transistors[edit | edit source]

Field-Effect (FETs)[edit | edit source]

Item Quantity Description
2N7000 20 N-Channel Signal MOSFET
FQP30N06 10 N-Channel, 2.0v max 60 volt and 30 amp rating
IRF3708 10 N-Channel, 0.6v Rds = 0.0095Ohm at Vgs=4.5V
IRF540 10+ N-Channel MOSFET, Vgs(th)=2.0~4.0v, Vgs=10V Vds=100V
IRF9540 20+ P-Channel MOSFET, Vgs(th)=-2.0~-4.0v, Vgs=-10V Vds=-100V
IRLZ44N 30 N-Channel, 1.0v Rds = 0.025ohm at Vgs=5.0v
NDP6020P 10 P-Channel, -0.4v

Bipolar Junction (BJTs)[edit | edit source]

Item Quantity Description
2N2222 20 NPN 600mA 40V
2N2907 20 PNP 600mA 40V
2N3904 20 NPN 200mA 40V
2N3906 20 PNP 200mA 40V
A1015 20 PNP 150mA 50V
bc547 <5
bc557 1
BC327 20 PNP 800mA 45V
BC337 20 NPN 800mA 45V
C1815 20 NPN 150mA 50V
S8050 20 NPN 500mA 25V
S8550 20 PNP 500mA 25V
TIP31C 10 NPN; 3A 100V. Power transistor

Resistors[edit | edit source]

Item Quantity Description
10 20 1/4 W
22 1/4 W
47 40 1/4 W
100 20 1/4 W
150 1 1/2 W
220 10 1/4 W
300 50+ 1/4 W
470 20 1/4 W
680 20 1/4 W
1k 100+ 1/4 W
1.5k 2 1/8 W
2.2k 100+ 1/4 W
3.3k 100 1/4 W
4.7k 100+ 1/4 W
6.8k 18 1/4 W
10k 100+ 1/4 W
22k 20 1/4 W
33k 100 1/4 W
68k 10 1/4 W
100k 100+ 1/4 W
220k 10 1/4 W
330k 5 1/4 W
1m 10+ 1/4 W

Variable Resistors[edit | edit source]

Item Quantity Description
1k DIP pot
10k DIP pot
20k DIP pot
1m DIP pot 8
RM065 Film Pot 10 each 100, 200, 500, 1k, 2k, 5k, 10k, 20k, 50k, 100k, 200k, 500k, 1M values
X9C104P 8 100K digital potentiometer, DIP
NTC 100d-11 4 Thermistor, 100 ohm @ 25C
Photoresistor 10

Capacitors[edit | edit source]

Item Quantity Description
Various 1pF - 1nF, 1nF - 1 uF
27 pF 100
39 pF 100
0.1, 0.15, 0.22, 0.33, 0.47, 0.68 uF 50 ceramic kit
1 uF 15

50

50V

ceramic kit

2.2 uF 10

50

50V

ceramic kit

3.3 uF 10 50V
4.7 uF 10

50

50V

ceramic kit

10 uF 20

50

50V

ceramic kit

22 uF 10 25V
33 uF 10 25V
47 uF 10 25V
100 uF 12 16V
220 uF 10 16V
330 uF 10 16V
470 uF 10 16V
820 uF 2
880 uF 2
1000 uF 40+ 25V
1500 uF 3
1800 uF 10 JY brand


Inductors[edit | edit source]

Item Quantity Description
2.2 uH 10 1 W
4.7 uH 10 1 W
6.8 uH 10 1 W
10 uH 10 1 W
22 uH 10 1 W
47 uH 10 1 W
68 uH 10 1 W
100 uH 10 1 W
220 uH 10 1 W
330 uH 10 1 W
470 uH 10 1 W
1MH 10 1 W

Lights[edit | edit source]

Item Quantity Description
3mm LED 50+

100

Red, green, yellow, blue, white
5mm LED 100 Red, green, yellow, blue, white
5mm 940nm LED 100+ Infrared
Laser diode 10
940 IR LED 100 5mm

Arduino, sensors, modules.[edit | edit source]

Arduino[edit | edit source]

Item Quantity Description
Arduino pro mini 10
Arduino nano 1
Arduino Duemilanove 1 2010 vintage
Arduino Leonardo 1
Arduino Mega 1 From 2013
Arduino Mega new 1 From 2020
Arduino 2560 Mega Mini 1
STM32 2 STM32F103C8T6
Arduino Modules + Extras Quantity Description
Arduino RTC module 1 i2c
Arduino SD card module 1
Arduino Ethernet module 1
Arduino Mega Protoboard 1
Arduino Nano breakout board 1

ESP8266, Wemos D1, ESP32[edit | edit source]

Item Quantity Description
ESP8266 5 Individual modules
ESP32 2 ESP32-WROOM-32U, ESP32-WROOM-32S
ESP32 board 1 ESP32
ESP8266 Wemos D1 4 ESP8266 Wemos Board
Wemos D1 Modules Quantity Description
0.66" OLED Display 2 64x48 SSD 1306
Button 1
Battery shield 3
DHT22 5
Proto boards 20+ Various protoboards for the D1
Power shield 3
Relay 2 on order


Displays[edit | edit source]

Item Quantity Description
1604 LCD 0 Blue, used by signal generator
1602 LCD + i2c adapter 0 Green, used by electronic load
SSD1306 128x32 OLED display 4 on order White
GME12864-50 0 OLED 0.96" Blue, used by CO2 meter
7 segment display 10+
10 segment bar 10

Miscellaneous Modules[edit | edit source]

Module-like widgets[edit | edit source]

Item Quantity Description
Ultrasonic atomizer module 1 mini humidifier/atomizer module
IRF520 driver module 1 "MOS Module", with LED at gate
RS-485 TTL to RS485 Module 5 MAX485CSA Converter Module
Double Stepper Motor Driver 4 Double BTS7960B DC 43A Stepper Motor Driver
CAN Bus Interface module 1 MCP2515 CAN Bus Interface
ADS1115 4-channel ADC 4 I2C 16-bit ADC
MCP4725 DAC 1 12-bit I2C DAC Module
RC522 Module 1 RC522 RFID Card Reader Module
CJMCU-9833 1 ADS9833 Signal Generator Module
CJMCU-4599 1 Si4599 N and P Channel 40V (D -S) MOSFET module
4 channel shift level 2 shift level module / breakout
TXS0108E Bi-directional converter module 3 on order 8 channel logic level converter module
SSR G3MB-202P 1 channel 1 on order

Sensors[edit | edit source]

Item Quantity Description
LM35DZ 2 Temperature sensor
GY-BMP 280 2 Atmospheric pressure sensor
BMP 180 Atmospheric pressure sensor
DHT11 Humidity, temperature sensor
MAX471 1 Current-sense amplifier
Microphone module 2 MAX9812 amplifier module
MAX9814 Microphone Amplifier 3
MH-ET LIVE MAX30102 1 Heart rate module
CJMCU-811 1 eCO2 meter
IR obstacle sensor module 5 IR Diode + sensor + opamp module
MPU6050 3 Axis Accelerometer 1
INA219 1 Low voltage current sensor
PIR motion 1 PIR motion sensor
ML8511 UVB detector 2 on order analog output
INA219 low voltage current sensor 1 Low voltage current/voltage sensor, i2c

Everything else[edit | edit source]

Item Quantity Description
TEC1-12706 4 12V Peltier plate, thermoelectric cooler
various motors