Julian’s electronics postbag #146 – pcie cables arduinos
JLCPCB Prototype for $2(Any Color): https://jlcpcb.com Stuff is coming from China more slowly now, but it's still arriving. So Postbag…
Radar sensor lights – outdoor installation
JLCPCB Prototype for $2(Any Color): https://jlcpcb.com Fitting the microwave doppler radar sensor and switch to some 12V LED strips in…
Pwm motor speed controller reverse engineer
JLCPCB Prototype for $2(Any Color): https://jlcpcb.com Based around a 555 timer (dual diode PWM configuration) and a MOSFET - this…
New pcbs from jlcpcb: julianno
JLCPCB Prototype for $2(Any Color): https://jlcpcb.com Second attempt to produce a solderless Arduino module backboard.
Flyback diode to protect relay
JLCPCB Prototype for $2(Any Color): https://jlcpcb.com Using a 1N4005 diode to quench the high flyback voltage from a 12V fan…
Julian’s electronics postbag #145 – oleds and fpgas
JLCPCB Prototype for $2(Any Color): https://jlcpcb.com It's Postbag White 128X64 OLED LCD LED Display Module For Arduino 0.96" I2C IIC…
High quality engineering in stainless steel
JLCPCB Prototype for $2(Any Color): https://jlcpcb.com Some exquisite bodging of stainless steel wire mesh to make an insect screen for…
Supercapacitor pir led light repair
JLCPCB Prototype for $2(Any Color): https://jlcpcb.com The Supercapacitor module (6x 120F 2.7V) didn't like spending a year outdoors. Now I've…