74LS253 4-Input Multiplexer as a Multifunction Logic Gate Julian Ilett 2026-09-21 | 74LS253 4-Input Multiplexer as a Multifunction Logic Gate
30A DC Circuit Breaker Teardown Julian Ilett 2024-05-15 | Full teardown of a DC circuit breaker rated 30A.aliexpress.com/item/1005006784397399.html
Sodium Ion Batteries and Heltek Balancers Julian Ilett 2024-04-27 | The battery stuff I'm playing with right now.aliexpress.com/item/1005005902860920.htmlaliexpress.com/item/1005005497090720.html
Battery using Different Grades of Yinlong LTO Cells? Julian Ilett 2024-04-19 | Can I build a 3-cell battery using different grades of Yinlong LTO cells?Buy grade-A Yinlong LTO cells from: hakadibattery.com
Xtar VC8S Battery Charger Tested Julian Ilett 2024-04-12 | This 8-bay charger supports lithium ion and nickel metal hydride cells, and can charge up to 2 cells at 3 amps, up to 4 cells at 2 amps, and up to 8 cells at 1 amp. LiFePO4 can also be charged if the charger is in Storage mode. Sodium ion can also be mostly charged in Storage mode.Cells can be graded (charged, discharged and capacity tested, then charged again) in Grad mode.Amazon UK link: amzn.to/3TV43i5Things I found out after I made this video:In storage mode, nickel metal hydride is first charged fully, then discharged to 1.29 volts.In storage mode, sodium ion is treated as NiMH until it reaches 2 volts. Between 2 volts and 2.5 volts, sodium ion is treated as a faulty lithium cell and will periodically flag an error. Above 2.5 volts, sodium ion is charged normally up to 3.65 volts.
Shed Update April 24 Julian Ilett 2024-04-03 | What is going on in the modular shed this month?Listen to Julian's story on the Simple Electronics podcast:youtube.com/watch?v=ZmHaGZZ3Jxk&t=3564s
Fnirsi SWM-10 Spot Welding Machine Review Julian Ilett 2024-03-27 | A review of this handy desktop spot welder.Fnirsi SWM-10: https://s.click.aliexpress.com/e/_oCJDJ8W
PCIE Meltdown Julian Ilett 2024-03-21 | Why is there no standard polarity for PCIE power connectors? This cheap PCIE power cable caught me out and killed an Antminer control board.monolithicpower.com/en/mp1484.htmlThese links very kindly provided by a Patron:superuser.com/questions/849265/is-there-a-difference-between-8-pin-eps12v-and-pci-e-connectorsqph.cf2.quoracdn.net/main-qimg-d0b098e598dd5de28261e6323a1fe572
Pure Nickel or Nickel Plated Steel? Julian Ilett 2024-03-14 | Is pure nickel strip worth the price? Four times more expensive but certainly not a quarter the resistivity.en.wikipedia.org/wiki/Electrical_resistivity_and_conductivityaliexpress.com/item/1005004681739268.htmlaliexpress.com/item/1005005197511586.htmlaliexpress.com/item/1005006151499051.html
Vehicle COB Lights 12V to 85V Julian Ilett 2024-03-11 | These LED lights include a buck converter.aliexpress.com/item/1005005972589989.htmlaliexpress.com/item/1005005806759882.htmlaliexpress.com/item/1005005511135545.htmlaliexpress.com/item/1005004460658096.htmlaliexpress.com/item/1005006445372224.htmlhttp://tpower-ic.com/product-61320-53110-144234.html
Dabbsson DBS1300 Portable Power Station Review Julian Ilett 2024-03-09 | Very interesting LFP power station with EV grade semi solid state cells, super fast charging and feature-packed App.DBS1300: amzn.to/3TbBT1U£100 off code: BPO7TTKZ
The BT189 Battery Tester is a Crazy Voltmeter Julian Ilett 2024-03-06 | It measures the cell voltage and latches it. It doesn't show real-time data.aliexpress.com/item/1005006117710549.html
Kaiweets KTI-K01 Thermal Imaging Camera Review Julian Ilett 2024-02-26 | Review of Kaiweets new thermal imaging camera with 256x192 sensor and 3.5" touch screen.15% off code: JI15(Sitewide at Kaiweets.com and it never expires.)Buy from: kaiweets.com/products/kti-k0110% off code (Amazon US): BW7PR927$100 coupon: Apply from product page(Save 10% plus $100 in total)Date of expiry: 2024-4-30amazon.com/dp/B0CKP5KKMW
Building a Modular Shed Julian Ilett 2024-02-20 | Building my modular garden shed - from the beginning.Originally recorded in 2020.
Boost and Buck Converters DPX800S and DPQ9010 Julian Ilett 2024-02-16 | High voltage (100V) and high current (10A) boost and buck converters.aliexpress.com/item/1005005603931865.htmlaliexpress.com/item/1005005594624086.htmlsenliwell.com/news/267.html
Fnirsi FNB58 USB Fast Charge Tester Julian Ilett 2024-01-29 | Versatile USB test instrument.Available here: https://s.click.aliexpress.com/e/_oCDsPGsMeasures voltage, current and power with data logging functions. Checks and reports all the fast charge options of your power banks. Listens to PD communications and shows the relevant capabilities. Checks for e-marker chip in 5A type-C cables. Measures USB cable resistance. Includes a full function USB oscilloscope.
The ZK-S4 Boost Converter works down to 2V Julian Ilett 2024-01-25 | Boosting the voltage from a single LTO cell to do something useful with it.
100A Relay Coil Overheat Prevention Julian Ilett 2024-01-17 | This motorcycle starter relay is only intended for short duration use. Here's a technique to allow longer duration operation.
Lithium Titanate Cells - an Introduction Julian Ilett 2024-01-13 | What are lithium titanium oxide cells? Where do they come from and what are they used for?Use discount code "Julian LTO" at hakadibattery.comHakadi LTO Cells: hakadibattery.com/products/hakadi-lto-2-4v-40ah-original-grade-a-brand-new-rechargeable-lithium-titanate-batteries-for-diy-solar-car-audio-power-gridYinlong LTO Cells: hakadibattery.com/products/yinlong-2-3v-40ah-grade-a-lto-cells-brand-new-66160-lithium-titanate-battery-for-car-audio-rv-ev-solarYinlong website: https://www.yinlong.energy/Yinlong LTO cell safety video: youtube.com/watch?v=VORpNAHmFSMElectric bus: en.wikipedia.org/wiki/Electric_bus
Xtar Dragon VP4L Plus Battery Charger Julian Ilett 2024-01-06 | Review of this four slot lithium ion and nickel metal hydride cell charger.Product links:amazon.co.uk/Rechargeable-XTAR-batteries-Professional-Batterys-Black/dp/B0BXCF4FRRxtar.cc/product/XTAR-VP4L-Plus-Charger-214.html
Smart Active Balance Module Julian Ilett 2023-12-14 | The smart active balancer from 100BalanceSodium ion cells from:http://www.evpromax.comActive balancer links:aliexpress.com/item/1005006226906519.htmlaliexpress.com/item/1005006043488118.htmlData sheets:semic-boutique.com/wp-content/uploads/2021/01/EG27324.pdfdatasheet.lcsc.com/lcsc/2012141235_Chipanalog-CA-IS3721HG_C528650.pdfdatasheet.lcsc.com/lcsc/1811071713_3PEAK-TP8485E-SR_C94206.pdfdatasheet.lcsc.com/lcsc/1811151441_GATEMODE-BM8563_C269877.pdfdatasheet.lcsc.com/lcsc/1810101510_EG-Micro-EG3001_C81708.pdfhttp://www.icgan.com/uploadfile/pdf/agmsemi/rxtxmos/AGM311MN_datasheet_v2.2.pdf
Active Balancer Modules Julian Ilett 2023-12-13 | These are the non-smart active balancers from 100Balance.Sodium ion cells from:http://www.evpromax.comActive balancer links:aliexpress.com/item/1005006226906519.htmlaliexpress.com/item/1005006043488118.htmlData sheets:semic-boutique.com/wp-content/uploads/2021/01/EG27324.pdfdatasheet.lcsc.com/lcsc/2012141235_Chipanalog-CA-IS3721HG_C528650.pdfdatasheet.lcsc.com/lcsc/1811071713_3PEAK-TP8485E-SR_C94206.pdfdatasheet.lcsc.com/lcsc/1811151441_GATEMODE-BM8563_C269877.pdfdatasheet.lcsc.com/lcsc/1810101510_EG-Micro-EG3001_C81708.pdfhttp://www.icgan.com/uploadfile/pdf/agmsemi/rxtxmos/AGM311MN_datasheet_v2.2.pdf
Sodium Ion Cells from Hakadi Battery Julian Ilett 2023-12-08 | Some large format sodium ion cells and battery management systems (BMSs) from hakadibattery.comhakadibattery.com/products/hakadi-sodium-ion-18650-3-0-v-1500mah-battery-original-rechargeable-cell-for-e-bike-power-tools-diy-12v-24v-48v-72v-battery-packhakadibattery.com/products/hakadi-sodium-ion-33140-3v-10ah-battery-na-ion-rechargeable-cell-for-cars-rv-ev-electric-bicyclehakadibattery.com/products/hakadi-sodium-ion-3-0-v-battery-18ah-brand-new-rechargeable-na-ion-batteries-for-solar-energy-stoarge-boat-medical-equimenthakadibattery.com/products/hakadi-4s-16s-sodium-ion-battery-smart-bms-for-diy-battery-pack?variant=41899722670285
New Product Peek Julian Ilett 2023-12-04 | A quick look at some new items I've bought on eBay and Aliexpress.aliexpress.com/item/1005006168244615.htmlaliexpress.com/item/1005005297734867.htmlaliexpress.com/item/1005004590744267.htmlaliexpress.com/item/1005005444567955.htmlaliexpress.com/item/1005005271971237.htmlaliexpress.com/item/1005005315634941.htmlebay.co.uk/itm/305094832166ebay.co.uk/itm/155711905976
Shed Condensation #shorts #shed Julian Ilett 2023-12-02 | This is why I need to put covers on my electronics in the shed
Modular Shed Update - November 23 Julian Ilett 2023-11-30 | A very cold shed - zero degrees showing on the temperature display. Failed buck converter probably didn't like the solar panel open circuit voltage and has failed short. I've been testing Antminers on a range of voltages between 13.6V and about 11V.
Dual BMS Problem for Sodium Ion Battery - Fixed Julian Ilett 2023-11-23 | Using two BMSs (LiFePO4 and NMC) with a sodium ion battery is not without its problems. One such problem is overheating MOSFETs.Sodium ion cells from: http://www.evpromax.com
Voltmeter Ammeter Wattmeter Z3-20A Julian Ilett 2023-11-12 | Self-powered voltmeter ammeter wattmeter with LED backlight. Input up to 200V and 20A (not yet tested).
My First Sodium Ion Battery Julian Ilett 2023-11-06 | A 4-cell (4S) sodium ion battery using 33140 cells from http://www.evpromax.comFitting a battery management system (BMS) from aliexpress.com/item/1005003070168586.htmlThe chip on the BMS is from BYD http://www.datasheet-pdf.com/PDF/BM3451-Datasheet-BYDMicroelectronics-1098180
768Wh LiFePO4 Battery Build - BMS & Balancer Julian Ilett 2023-11-03 | Fitting a new balancer (I blew up the old one) and 80A BMS to my 8S5P LiFePO4 battery
Sunshine Fun Mine - Neon Sign from Neonip Julian Ilett 2023-10-24 | Custom neon signs in a range of colours, fonts and graphical elements.The sign is mounted on 5mm acrylic and uses 12V LED strips. The supplied power adapter is 12V 5A. My sign draws 18W which is 1.5 amps at 12 volts.20% off coupon code: JulianProduct link: neonip.com/referral/julian
Sodium Ion Batteries from evpromax.com Julian Ilett 2023-10-22 | A selection of sodium ion cells. 18650, 26700 and 33140 cells offer 1300mAh, 3300mAh and 10,000mAh respectively.Sodium ion cells from: http://www.evpromax.com
Give n Take Energy Transfer System Julian Ilett 2023-10-20 | How to charge a 12V battery from a 24V battery. Uses a buck converter and a couple of voltage controlled relays.Modules used: XH-M604, XY-CD63L, Ming He B3008
XTAR Power Bank and Battery Charger PB2SL Review Julian Ilett 2023-10-17 | A power bank and battery charger with PD3 and QC3XTAR link:xtar.cc/product/XTAR-PB2SL-Charger-213.htmlAmazon purchase link: amazon.co.uk/battery-Charger-Version-XTAR-included-Black/dp/B0BXKFSKW8?ref_=ast_sto_dp&th=1
Buck Converter Teardown - Juntek DPM8650 Julian Ilett 2023-10-11 | What's inside this high current buck converter? Also, what's inside the wireless control panel?
Julians Battery Postbag (pb162) - Balancer and BMSs Julian Ilett 2023-09-30 | Battery stuff, including:aliexpress.com/item/1005005241453498.htmlaliexpress.com/item/1005005000358800.htmlaliexpress.com/item/1005004937231338.htmlaliexpress.com/item/1005001299243727.htmlaliexpress.com/item/1005003398193947.htmlaliexpress.com/item/1005003070168586.html
10A Ammeter Voltmeter Wattmeter Fault and Fix Julian Ilett 2023-09-16 | This digital power meter has a manufacturing flaw. It's supposed to measure up to 10 amps, but has been fitted with the wrong shunt and can only measure up to 1 amp.
Sodium Ion 18650 Battery Discharge Test Julian Ilett 2023-09-13 | First test of a sodium ion battery, charged to 4.1V and discharged to 1.5V. Did the 18650 cell yield the full 1500mAh capacity. What does the discharge curve look like? Note: these cells contain no lithium.aliexpress.com/item/1005005859082063.htmlaliexpress.com/item/1005004773128494.html
Spot Welding with Supercapacitors Julian Ilett 2023-09-07 | Using the Kekk supercapacitor spot welder to weld nickel-plated steel strip to 18650 lithium-ion battery cells.Kekk Supercapacitor spot welder:aliexpress.com/item/1005005041354620.htmlSEPIC buck-boost power supply:aliexpress.com/item/1005001278107340.html
Whats the Plan? Update from the Modular Shed Julian Ilett 2023-09-06 | What's the plan for solar panels, batteries and energy flow in the modular shed?
Julians Electronics Postbag (PB161) - Lucky Bag Julian Ilett 2023-09-05 | A lucky dip of electronic delights from AliExpressaliexpress.com/item/1005005859082063.htmlaliexpress.com/item/1005002674069773.htmlaliexpress.com/item/1005004457142294.html
New PCBs from JLCPCB - 6Ah Cell Connector Julian Ilett 2023-08-31 | New design cell connector PCB with spoked holes that act as fuses. Additional holes take steel angle brackets for connecting BMS, balancer and voltmeters. Thanks to JLCPCB for providing these PCBs.jlcpcb.com
Parallel Boost Converters Julian Ilett 2023-08-29 | Can you connect boost converters in parallel? Do they fight like rats in a sack? Or do they play fair and share the workload equally.
Part3: Supercapacitor 5.4V 250F Schematic Julian Ilett 2023-08-27 | How the LN61C voltage detector IC doesn't provide proper protection for the supercapacitors on this moduleData Sheets:onsemi.com/pdf/datasheet/mgsf1n03lt1-d.pdfreddit.com/r/AskElectronics/comments/fgg47g/i_bought_some_super_capacitors_on_the_balancerhttp://www.natlinear.com/uploadfiles/2014/LN/LN61C_E.pdf
Balancing Voltages and Currents Julian Ilett 2023-08-26 | Watching cell voltages and balancer currents on a 4S LiFePO4 battery
DL24M Modular Electronic DC Load Julian Ilett 2023-08-24 | First look at the Atorch DL24MP Electronic DC Loadaliexpress.com/item/1005004644040863.htmlvishay.com/docs/91217/irfp264.pdf
Modular Electronics Workshop - Progress Video Julian Ilett 2023-08-21 | Bit of shed building nostalgia - this from 2 years ago. Happy to put up more of the shed build if there's any interest.Interested in my new garden workshop? Follow the entire build on Julian's Shednanigans:youtube.com/channel/UCXfDjPehpC7B7lW2JFxeS4w
Ideas for a 8S5P LiFePO4 Battery Build Julian Ilett 2023-08-20 | Ideas for building a 768Wh battery consisting of 40 LiFePO4 cells. Each cell is 6Ah nominal 3.2V
Part2: Testing ZK-SJ20 Buck Boost MPPT Function Julian Ilett 2023-08-19 | How does the MPPT potentiometer on the ZK-SJ20 buck boost converter work?Power Queen 100Ah LiFePO4 Battery:uk.ipowerqueen.com/?ref=eqsfmkg1ZK-SJ20 Buck Boost MPPT Converter 300Waliexpress.com/item/1005004966703221.html
