We think the RFM69 modules (from HopeRF) are teriffic. The only challenge for the hobbyist is that these transceiver do not use a standard 0.1″/2.54mm hole spacing, as used on prototype boards or breadboards. Rather they use 2mm spacing, with castellated pads. So, though you can use tinned wire links to convert from 2mm spacing […]
Category: Tutorials
Sleeping an ESP-01S without wire links
The ESP-01S is easy to sleep. The ESP.deepsleep() function put the device into a very low-power sleep mode. The challenge is waking it up again! The most common method appears to be to solder a wire link between pin-8 of the ESP8266 processor (the ‘XDP-DCDC’ pin) to the reset pin on the header. When the […]
Example of a professional finish with an OLED Bezel
This is an example of a project that utilises a display bezel to give a very professional finish. This project is a timer for some low voltage outside lighting. It was prototyped on an Arduino Nano, but the final project used a stand-alone ATMEGA328P-PU. Time-keeping is facilitated by a DS3231 RTC (Real Time Clock). The […]
Adding a voltmeter bezel to a Bench Power Supply
In this post, we explain how we added a digital voltmeter to a case.
Improving an Arduino Project with a Bezel
Having spent time, effort and money on building your latest project, you want it to look good too! The challenge with many project is mounting a display so that the overall project looks neat and more professional. But some displays are really tricky to mount into a project box. A great example is the 128×32 […]
The problems with the 28BYJ stepper motor and how to fix them
The 28BYJ stepper motor is a terrific device but it presents some design challenges. Here is a way to overcome those challenges.
Solving three big problems in electronics projects
There are some common challenges with electronics (such as Arduino) projects, and we set out to help you solve those.
How to mount tactile button switches into a project box or panel
This is an alternative and flexible way to present external buttons to give a tidy and professional finish – in a compact space.
How to connect your project to USB power
A popular, traditional way to power electronics projects had been to use a DC power socket with an external power supply. DC power supplies with a power jack (e.g. a “2.1mm jack”) are readily available and quite affordable. Speaking for our projects, we often brought in a 9V/12V DV power supply and employed a 7805 […]
An example of how a Bezel makes an electronic project look more professional
For home/DIY projects, it doesn’t matter how good the internals are. If the externals don’t have a quality finish, then you will always be that little bit disappointed. Here is how to be NOT disappointed.