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23 Jan 2020 18:36:33 UTC
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Julian's Postbag: #52 - Big Box of Integrated Circuits (part1)
Massive selection of old integrated circuits
https://en.wikipedia.org/wiki/List_of_7400_series_integrated_circuits
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https://www.youtube.com/watch?v=_dWz9GwbVEs
https://en.wikipedia.org/wiki/List_of_7400_series_integrated_circuits
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https://www.youtube.com/watch?v=_dWz9GwbVEs
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9V BA
9v-battery-capacity-and-internal
I've been having some problems running my Arduino-INA219-OLED Wattmeters from zinc carbon 9v batteries. So I thought I'd check the capacities of NiMH, alkaline and zinc carbon versions of these 9v batteries. This threw up some odd results, so I went on to check the internal resistance of the zinc carbon ones.
Useful links:
https://en.wikipedia.org/wiki/Nine-volt_battery
https://www.google.co.uk/search?q=zinc+carbon+internal+resistance
http://batteryuniversity.com/learn/article/how_to_measure_internal_resistance
https://www.experimental-engineering.co.uk/zhiyu-zbp30a1-electronic-dummy-load/
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https://www.youtube.com/watch?v=GP-0DgPLC5A
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1 year ago
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EMERG
emergency-pwm5-build-solar-charge
JLCPCB Prototype for $2(Any Color): https://jlcpcb.com
My recently built PWM5 ThruHole stopped working. I'm pretty sure moisture got inside and interfered with the high-side driver circuit. So I've had to build another one :)
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https://www.youtube.com/watch?v=QgrrE25p31g
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NEW P
new-pcbs-from-jlcpcb-drum-synthesiser
$2/5pcs 2Layer & $5/5pcs 4Layer PCBs: https://jlcpcb.com
Vote for me - get PCB coupons: https://jlcpcb.com/Workshop-PCB-Project-Competiton
Analogue drum synthesiser project from 1981
http://www.muzines.co.uk/articles/the-syntom-drum-synthesiser/2593
https://easyeda.com/julian256/Syntom
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https://www.youtube.com/watch?v=ixEMzytVnFw
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JULIA
julian-s-postbag-106-lipo-cell-tester
Huge thanks again to the wonderful people who support my channel via Patreon.
https://www.patreon.com/julian256
eBay links:
2pcs HM6116P-70 HM6116P HMC DIP24 General Purpose Static RAM NEW #UnbrandedGeneric http://www.ebay.com/itm/2pcs-HM6116P-70-HM6116P-HMC-DIP24-General-Purpose-Static-RAM-NEW-/401101613913
1-8S BX100 Lipo Battery Voltage Tester/ Low Voltage Buzzer Alarm with Dual Speak http://www.ebay.com/itm/1-8S-BX100-Lipo-Battery-Voltage-Tester-Low-Voltage-Buzzer-Alarm-with-Dual-Speak-/162448098632
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https://www.youtube.com/watch?v=8OUdxrugDCg
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50W L
50w-led-driver-vga-heatsink-fan-and-a
The last of my Sure Electronics LED drivers is tested with a 50W LED. A very cheap VGA Cooler heatsink and fan provides cooling and there's a nasty fizzing noise coming from somewhere.
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https://www.youtube.com/watch?v=b3mO7tDikbY
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WHAT'
what-s-in-my-bugout-bag
Preparing for the Zombie Apocalypse
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https://www.youtube.com/watch?v=TMs9xxrPaEQ
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BLUET
bluetti-ac200-solar-charging-in-february
$2 for 5PCBs - order with coupon code: JLCPCBcom
Any questions about JLCPCB or ordering, pls email support@jlcpcb.com
A rare day of February blue sky and sunshine lets me charge the AC200 at 360W.
http://www.amazon.de/dp/B08SM5GPVF?ref=myi_title_dp
http://www.amazon.co.uk/dp/B08RRNRCX5?ref=myi_title_dp (available March)
Use code: POWERAC200P to save 100 euro or 100 pounds.
Interested in my new garden workshop? Follow the entire build on Julian's Shednanigans:
https://www.youtube.com/channel/UCXfDjPehpC7B7lW2JFxeS4w
Subscribed to my 2nd channel? Watch all my 3 minute videos on Julian's Shorts: https://www.youtube.com/channel/UCeewzdnwcY5Q6gcbnZKIY8g
Join me on Odysee/LBRY: https://lbry.tv/$/invite/@julian256:d
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https://www.youtube.com/watch?v=UAkN9kVEUck
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1 year ago
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English
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POSTB
postbag-32-a-servos-tester-db9-antenna
A selection of eBay items from China.
Check out what I found. 1Pcs Electronic Lucky Rotary Suite DIY Kits Production Parts And Components New http://www.ebay.co.uk/itm/-/271661475550?roken=cUgayN via @eBay_UK
Check out what I found. New Good Quality Electronic Dice Suite/Electronic DIY Kits Good Quality http://www.ebay.co.uk/itm/-/271602686954?roken=cUgayN via @eBay_UK
Check out what I found. New CCPM Steering Gear Tester Servo Motor Tester Electrically Controlled Tester http://www.ebay.co.uk/itm/-/271659310106?roken=cUgayN via @eBay_UK
Check out what I found. 4X Micro 9g RC Servo for Trex 450 Futaba Hitec HS-55 Align GWS JR Walkera T5 http://www.ebay.co.uk/itm/-/331006376340?roken=cUgayN via @eBay_UK
Check out what I found. DB9 D SUB Male Adapter Plate 9 Pin Terminal Breakout Board UART RS232 KF396232 http://www.ebay.co.uk/itm/-/281464188757?roken=cUgayN via @eBay_UK
Check out what I found. 1Pcs USB Charger DC-DC Step-down Converter Voltmeter Module DC 4.5-40V to 5V 2A http://www.ebay.co.uk/itm/-/281395320002?roken=cUgayN via @eBay_UK
Check out what I found. New 5V 30A 1-Channel Relay Module+Optocoupler H/L Level Triger for Arduino Mega http://www.ebay.co.uk/itm/-/281428765326?roken=cUgayN via @eBay_UK
Check out what I found. 1Pcs 2.4G 2.5dBI Wireless RP-SMA Antenna with Extension Cord for NRF24L01 CC2500 http://www.ebay.co.uk/itm/-/271648293939?roken=cUgayN via @eBay_UK
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https://www.youtube.com/watch?v=uKhC5nTovSU
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JULIA
julian-s-postbag-73-ebay-electronics
To support me via Patreon: https://www.patreon.com/julian256
eBay Links:
Check out WS2812 DC5V/WS2811 DC12V Mini Controller 76 Effect Control 2048 Pixels Bulit-in http://www.ebay.com/itm/-/391356097379?roken=cUgayN&soutkn=b5HPNf via @eBay
Check out USB Charger Doctor Current Voltage Charging Detector Battery Voltmeter Ammeter http://www.ebay.com/itm/-/311686660773?roken=cUgayN&soutkn=fd7fsn via @eBay
Check out 2PCS RGB LED Ring 16Bit WS2812 5050 RGB LED + Integrated Drivers For Arduino http://www.ebay.com/itm/-/201541633441?roken=cUgayN&soutkn=VGKeFb via @eBay
Check out 7-Bit 8-bit 12-bit 16-bit 24-bit 60-bit WS2812 5050 RGB Lamp Panel Round LED http://www.ebay.com/itm/-/401174790065?roken=cUgayN&soutkn=WxgvMz via @eBay
Check out 1PCS NEW 5V PIC12F675 Development Board Learning Board Breadboard L87 #UnbrandedGeneric http://www.ebay.com/itm/-/252496704643?roken=cUgayN&soutkn=lokvVz via @eBay
Check out 10pcs Micro USB Charger Module 5V 1A 18650 Lithium Battery Charging Board TP4056 http://www.ebay.com/itm/10pcs-Micro-USB-Charger-Module-5V-1A-18650-Lithium-Battery-Charging-Board-TP4056-/251364360997?roken=cUgayN&soutkn=koLAjt via @eBay
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https://www.youtube.com/watch?v=ZRgq47D7dGM
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Created
1 year ago
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