Banggood 30w 12v 36-cell semi-flexible solar panel
Julian attempts to test the output of this semi-flexible solar panel, but instead ends up getting cross and shouting at…
Julian’s logic: 555 logic functions
Looking at the logical (non-timer) functions of the 555. http://www.pmonta.com/555-contest/logic/logic.html
Update: pic development board and sleeping beauty
The PIC12F675 Demo Board has a few issues. One of these, related to the 13v programming voltage requires a harware…
Tech talk: ming he d3806 boost buck digital psu
eBay Links: DC-DC 38V Digital Step-up Step-down Module Boost Buck Converter Solar Charging http://www.ebay.com/itm/-/182100998361 If this link has expired, search…
First look: ming he 120v 30a wireless power monitor
Unboxing and first look at the Ming He VAC-1030A Wireless Power Meter. It displays voltage, current and power on a…
Julian’s postbag: #71 – more fun electronics stuff from china
eBay Links: B0505S-1W DC-DC 5V Power Supply Module 4 Pin Isolated converter NEW Z3 http://www.ebay.com/sch/?&_nkw=5v+isolated+converter http://www.ebay.com/itm/-/252029953042 Digital LCD TDS EC…
Unboxing: microduino mcookie 201 advanced kit
Unboxing the mCookie 201 Advanced Kit from microduino.cc These are my initial thoughts about the kit. Kit was supplied to…
Investigation: two similar dual display digital buck psus
How similar are these two dual-display digitally controlled DC/DC power supplies? Are they manufactured in the same factory? Were they…
Playing with: pic12f675 microcontroller demo pcb
I saw this $10 Microchip PIC demo board on eBay and thought it would be a good basis for some…
Playing with: magnetic field viewing film
Using a piece of magnetic field viewing film to check the pole orientation of various magnets. Also, what happened to…