| Everybody who builds their own equipment will come across this problem at some stage: How can I create the layout for a decent front panel?...
More about Circuit (708)
| The use of the low-cost RFM12 868 MHz (US: 915 MHz) ISM (licence-free) radio module with microcontrollers like the ATmega and the R8C13 is s...
| Here’s a novel way of listening to bats over the Summer. Put the receiver — powered by four AA (R6) cells — on a window-ledge, for example,...
| There are two sorts of lights on aircraft: red or white flashing lights, which are called ‘anti-collision lights’, and steady lights, red on...
| A standard 60 mm x 100 mm piece of prototyping strip board (breadboard) can very simply be used as a 12 V warming plate. All that’s necessar...
| The LM1830 fluid detector IC from National Semiconductor is designed to be able to detect the presence of fluids using a probe. This chip re...
| The most recent PC motherboards provide four pin connectors for cooling fans especially for the CPU fan. The older three pin fans are contro...
| This is a very simple and cheap device that demonstrates mobile phones (US: 'cell phones') generate RF energy (radio waves) strong e...
| This clock displays the time in binary using discrete LEDs. The use of Flowcode [1] makes it very easy to program the PIC controller in this...
| Each grid uses figures from the hexadecimal system, i.e. from 0 to F. Fill in each grid in such a way that all the hexadecimal figures from...