Make a usb led spider light
Sponsored by JLCPCB ($2 for 10 Boards): https://jlcpcb.com Build this big scary LED spider light for Halloween. Uses flexible USB…
New pcb – dcoi mosfet driver for muppet 2
Sponsored by JLCPCB ($2 for 10 Boards): https://jlcpcb.com I designed a new PCB for the DCOI (Dual Complementary Opto-Isolator) MOSFET…
Julian’s postbag: #126 – hardware
Sponsored by JLCPCB ($2 for 10 Boards): https://jlcpcb.com eBay links: M4 M5 M6 Brass Phillips Cross Round Head Cap Bolts…
One pot – two fets – muppet 2
Sponsored by JLCPCB ($2 for 10 Boards): https://jlcpcb.com One potentiometer to control the waveforms on two different MOSFETs. Colour codes…
Ryobi tek4 multimeter battery charging – very nerdy
Sponsored by JLCPCB ($2 for 10 Boards): https://jlcpcb.com Time to charge the AP4001 battery in my Ryobi RP4020 TEK4 Digital…
How to measure lumens with a lux meter
Sponsored by JLCPCB ($2 for 10 Boards): https://jlcpcb.com This is a difficult thing to do and my results weren't very…
Julian’s review: lensun 160w folding solar panel
Sponsored by JLCPCB ($2 for 10 Boards): https://jlcpcb.com http://www.lensunsolar.com/Foldable-solar-kit?product_id=301?YTBJulia http://www.lensunsolar.com/Foldable-solar-kit?product_id=294?YTBJulia
Julian’s postbag: #125 – uk stuff – forks, lithiums and pwm5 pico
Sponsored by JLCPCB ($2 for 10 Boards): https://jlcpcb.com John Norton's PWM5 Pico Kits: pwm5kitsuk@yahoo.com Note: If you're supplying kits of…
Julian’s review: ht-a1 thermal imaging camera
Sponsored by JLCPCB ($2 for 10 Boards): https://jlcpcb.com The HT-A1 Thermal Imaging Camera: HT-A1 on Banggood: https://ban.ggood.vip/37k5 15% off coupon…