Arduino Nano controlled Direct Digital Synthesis Variable Frequency Oscillator for making a 40 Meter CW Transceiver.
If you have an audio preamplifier whose "tone control" does not fully satisfy you, you may replace the existing stage with this stylish 3-way stereo tone control circuit which can act not only on treb...
The specific electronic die circuit which is presented here is small and simple, and has a single integrated circuit 4060. The 4060 is a 14-stage ripple carry binary counter, and contains an internal ...
Soldering circuit boards leaves a lot of residue that changes how the circuit will behave. Cleaning a circuit board after soldering is important to improve the performance of the circuit and makes the...
Hot air rework stations are an incredibly useful tool when building PCBs. Rarely will a board design be perfect and often chips and components need to be removed and replaced during the troubleshootin...
Arduino shield that will be used as flight controller.
This circuit gives out an alarm when its sensor is wetted by water. A 555 astable multivibrator is used here which gives a tone of about 1kHz upon detecting water. The sensor when wetted by water comp...
I designed this PCB to support my custom split keyboard project: Stratos. The PCBs were perfect, and arrived extremely quickly. The whole keyboard is built around the PCB, as there is no case to suppo...
The AD9850 DDS signal generator is a small board that forms the heart of the VFO. It ties in nicely with the Arduino Nano microcontroller. Nano and AD9850 are wired together by using a custom PCB made...
A digital die circuit can be easily realised using an astable oscillator circuit followed by a counter, a display driver and a display. It is considered a classic electronic project for beginners. Alt...
When completing the installation of electrical transformers several tests are required to determine the electrical, thermal and mechanical suitability for the system where they will be applied or used...
Hot air rework stations are an incredibly useful tool when building PCBs. Rarely will a board design be perfect and often chips and components need to be removed and replaced during the troubleshootin...
I like the design of this LED tester and could not locate the PC board online so I decided to have them manufactured at PCBWay. Awsome work
Web based digital and analog IO
I have been hoping to DIY a DAC but I don't have the expertise to wire up a DAC on my own. Fortunately, one day while was browsing the web, I found Audio Workshop. Audio Workshop has a numbers of DAC ...
This is a selection of small circuits boards that I have made for my own use. They are designed to fit inside the space-saving 1590A size box. On the top row there is an opamp buffer, fuzzface, chorus...