Functional Test Project: INA219, PWM Motor Control, ESP8266
Putting together an automated functional test system to show an example application for testing a small DC motor and registering a pass/fail with the push of a button.
NodeMCU/ESP8266 controls a PWM generator module to run the motor at different speeds. Current is measured with the INA219 module and the pass/fail result is shown on 128x64 OLED and red/green LEDs.
Here's a first look at the Mustool MT315 digital microscope and how it performs for SMD soldering and inspection. Since the microscope also comes with sample slides, I also look at those at various magnifications to see how the images look on the built in 7 inch HD display and then switch over to a PCB for some soldering while using the computer as a display.
Mustool MT315 Digital Microscope (affiliate link): https://www.banggood.com/custlink/KKvhiw1F6F
Video navigation
0:00 Intro
0:50 Power on and adjust lights
1:33 Looking at onion epidermis and honeybee wing slides with both lenses
3:28 Looking at a PCB!
6:26 Computer as a viewing screen
7:08 Computer 720p video recording
7:33 Soldering 0805 and 0603 resistors
10:45 SD card screen capture images
11:30 Summary
Equipment I regularly use (support the channel by shopping through these affilliate links - I may earn a small commission and it doesn't cost you extra):
946C Solder Hot Plate 200mm x 200mm https://www.banggood.com/custlink/K3DyiNZy0l
ANENG AN8008 True RMS Multimeter https://www.banggood.com/custlink/KKDh9267Fz
Minleaf NPS3010W Power Supply https://www.banggood.com/custlink/KKKdtaNN9A
FY6900 Dual Channel 60MHZ Signal Generator https://www.banggood.com/custlink/vGKR9r6RkR
Siglent SDS1104X-E 100Mhz Digital Oscilloscope 4 Channels Standard decoder
Amazon.com: https://amzn.to/36fH1ui
Amazon.ca: https://amzn.to/36fNWUc
#springsale
Spring Sale - https://www.banggood.com/marketing-spring-sale/tid-12672.html?utmid=17628&p=91052234260680201906
Coupon Center - https://www.banggood.com/marketing-Spring-Sale-Coupon-Center/tid-12704.html?utmid=17552&p=91052234260680201906
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LBRY/Odysee: https://odysee.com/@GadgetReboot:4
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https://www.youtube.com/watch?v=4P85RfmBP5g
With the workbench back in operation, here's what has arrived to help get projects going again.
Note: I may earn a small commission on qualifying purchases if you click these Amazon affiliate links and it doesn't cost you anything extra.
36W LED RGB DJ Par Can Up Lighting Wash Disco Strobe Lights with DMX and Remote Control
amazon.com: https://amzn.to/2I1fZhz
amazon.ca: https://amzn.to/3etWsC7
DMX 3 pin 10 foot Accu Cable Stage Light Accessory (AC3PDMX10)
amazon.com: https://amzn.to/3eHW96V
amazon.ca: https://amzn.to/352vONC
6J1 Tube Fever Pre Amplifier Preamp AMP Pre-Amplifier Board Headphone Buffer DIY Kit Module Stereo Potentiometer AC 12V Valve
https://www.aliexpress.com/item/32983069562.html
10PCS Potentiometer Plastic Knob 14 X 16MM Volume Control Knobs Knob for Encoder
https://www.aliexpress.com/item/32806181072.html
100pcs 0805 smd capacitor ceramic 22pf 100nf 1uf 2.2uf 4.7uf 10uf 47uf 22uf capacitors kit sets 0.5pF-47uF
https://www.aliexpress.com/item/32903313311.html
10pcs SN74HC374N DIP-20 74HC374 DIP 74HC374
https://www.aliexpress.com/item/4000341781565.html
Patreon: https://www.patreon.com/gadgetreboot
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https://www.youtube.com/watch?v=eoQenIoRlNY
This breakout board allows connecting a power supply and provides convenient multiple outputs, fused by PTCs.
PCBWay Supports High Precision Advanced PCBs: https://www.pcbway.com/
PCBs at PCBWay https://www.pcbway.com/project/shareproject/Power_Supply_DC_Jack_Screw_Term_0_1_Header_Breakout_with_PTC_13af4976.html
Design files https://github.com/GadgetReboot/Power_Breakout
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Videos are mirrored at LBRY/Odysee: https://odysee.com/@GadgetReboot:4
#ElectronicsCreators
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https://www.youtube.com/watch?v=ZgqjFVDlGPM
Make a Tandy Color Computer cassette file player running CASDuino
PCBWay Supports High Precision Advanced PCBs: https://www.pcbway.com/
Buy PCBs from PCBWay: https://www.pcbway.com/project/shareproject/CASDuino_and_similar_Compatible_Player_for_Computer_Cassettes_62e9595e.html
Design files: https://github.com/GadgetReboot/SD_Tape_Player
CASDuino Sketch: http://arduitape.blogspot.com/2020/08/new-castzxduino-firmware.html
General project info: https://hobbyretro.com/en/mass-media/maxduino-2
TRS-80 BASIC commands: https://colorcomputerarchive.com/repo/Documents/Manuals/Hardware/Color%20Computer%202%20Quick%20Reference%20Card%20(Tandy).pdf
If you'd like to support the channel, you can:
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Videos are mirrored at LBRY/Odysee: https://odysee.com/@GadgetReboot:4
#ElectronicsCreators
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https://www.youtube.com/watch?v=crib53w42zo
A bunch more things arrived...and there were more focus issues due to the camera preferring some of the colorful stuff sitting closer to it.
10PCS ICL7660SCPAZ ICL7660S CMOS Voltage Converter IC INTERSIL DIP-8 NEW
https://www.ebay.ca/itm/10PCS-ICL7660SCPAZ-ICL7660S-CMOS-Voltage-Converter-IC-INTERSIL-DIP-8-NEW/253078967375
Arduino Proto Screw Shield V2 Expansion Board Module Compatible Arduino UNO R3
https://www.ebay.ca/itm/Arduino-Proto-Screw-Shield-V2-Expansion-Board-Module-Compatible-Arduino-UNO-R3/113243218159
5PCS CD4070BE Logic Ic Dip-14 CD4070 NEW
https://www.ebay.ca/itm/5PCS-CD4070BE-Logic-Ic-Dip-14-CD4070-NEW/192583604638
Vinyl Film Sheet Sticker Auto Car Smoke Fog Light Headlight Taillight Tint
https://www.ebay.ca/itm/Vinyl-Film-Sheet-Sticker-Auto-Car-Smoke-Fog-Light-Headlight-Taillight-Tint/202612593380
MAX7219 Blue led matrix MCU control LED Display module for Arduino Raspberry Pi
https://www.ebay.ca/itm/MAX7219-Blue-led-matrix-MCU-control-LED-Display-module-for-Arduino-Raspberry-Pi/273353383607
25 pcs INS-1 bulb nixie for nixie clock IN-12, IN-4 IN-18, IN-14, Z568M DOT
https://www.ebay.ca/itm/25-pcs-INS-1-bulb-nixie-for-nixie-clock-IN-12-IN-4-IN-18-IN-14-Z568M-DOT/113261671823
Nixie Tube Info
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High Voltage Power Supply
https://www.ebay.ca/itm/NCH6100HV-High-Voltage-DC-Power-Supply-for-Nixie-Tubes-Magic-Eye-DC85-235V-Out/183434935217
Using INS-1 Nixie Tube Dots
https://hackaday.io/project/1940-modular-nixie-display/log/29161-ins-1
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Background music from the Youtube music library:
A Rising Wave by Jeremy Blake
Ridge Racer by DivKid
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https://www.youtube.com/watch?v=hs2dlRfxsiE
Magnetic pogo pin connector auto aligning https://s.click.aliexpress.com/e/_DknAB5L
Panel mount AC voltmeter ammeter https://s.click.aliexpress.com/e/_DdxLxFP
Machined pin socket header strip https://s.click.aliexpress.com/e/_DeDmM1R
Lock washer set https://s.click.aliexpress.com/e/_DEHBqID
IDC Ribbon connector PCB connector https://s.click.aliexpress.com/e/_DkxVNfn
If you'd like to support the channel, you can:
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Banggood https://www.banggood.com/custlink/3vKYLANH8N
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#ElectronicsCreators
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https://www.youtube.com/watch?v=-h-wCM21hpI
Using an Arduino Uno to draw a Christmas Tree on a Tektronix oscilloscope in XY mode.
Two PWM outputs with RC filters generate voltage ramps that plot a graphic in XY mode. The individual voltages are shown in normal 2-channel mode along with the resulting lissajous graphic in XY mode.
Based on the blog post from Johngineer:
https://web.archive.org/web/20111217001329/http://johngineer.com/blog/?p=648
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https://www.youtube.com/watch?v=6dBBAUuze-A
Taking a look into the old bag of tricks, a method for measuring capacitance when an actual capacitance meter isn't available.
This can be useful to also verify the actual capacitance against what the nominal value is supposed to be, especially if the value has drifted over time.
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https://www.youtube.com/watch?v=WnaPW1YikTs
Building and testing a 555 PWM adjustable duty cycle kit - PCB designed and sent in by Simple Electronics.
Simple Electronics 555 PWM Playlist:
https://www.youtube.com/watch?v=x4RmIzUd2lk&list=PLKh0bIc77F4_5Y07bdXmC2Z6P-hoW_lSy
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https://www.youtube.com/watch?v=U5xVunrO9uo