All our kits will be sold via The Curious Electric Company from now on. These pages are for information only. Please visit our shop for up to date information or contact us to discuss your project and how we might be able to help.

Renewable Energy Innovation have designed, developed and manufactured a range of products and kits. The vast majority of these relate to renewable energy systems, but there are a few products which are just for fun – helping to inspire interest in science and engineering. We have now created a NEW brand for selling these kits, along with carefully selected products from other suppliers, at The Curious Electric Company. Please click there to purchase our products.

We believe in the open-source philosophy and feel that it is beneficial to everyone to be open and free with information and designs. If possible, products have full constructional details for you to build them yourself. If you do build or modify one of our designs, we would love to hear about it.


Bat Detector

Welcome to fascinating world of bats! This bat detector device converts ultrasonic sounds created by bats and convert them down to a lower frequency so that we humans can hear them. … more


This TV-B-Gone kit is a ‘disruptive technology device’ designed to switch off annoying and unnecessary televisions. … more

7 Segment LED Board

This is a serially-interfaced 7 segment LED kit which can be linked together to create numerical displays. The LED display is a large 45mm/1.75″ unit with super-bright LEDs and is easily daylight visible. … more

DataDuino – Arduino data acquisition unit

The DataDuino data acquisition (DAQ) kit is designed to be robust and configurable but relatively simple. It is based upon the Arduino platform (using the Uno bootloader). It stores data to an SD card and uses a real time clock for accurate timestamping. The fastest resolution is 1 second sampling, up to 99999 second sampling. … more

Serial LCD Display

This LCD display unit displays any data sent to it via a serial connection. It is based upon the ATmega328 and the Arduino Uno bootloader. This unit fits a number of 16 x 2 character LCD display units which use the Hitachi HD44780 driver. A back-light control line is also included. … more

Modular Pedal Power Displays

We have created a range of modular power monitors, regulators and displays. The basic modular unit has been designed for pedal generators within the range of 12-35V DC and up to 20A DC, but bespoke units for different voltage and current ratings are available. … more

6 Digit LED Display

This is an all-in-one six digit 7-segment led display unit with an ATmega328 programmed with the Arduino bootloader. The displays can be used to count, time things or display numbers. The display is bright enough to use inside or out. … more

Battery Voltmeter

The battery voltmeter is a plug-in voltage monitor for 12V battery systems. This could be used in a car, caravan, on a boat or for your off-grid renewable energy system. … more

Thermocouple Amplifier

This is a K-type (or J-Type) thermocouple amplifier which can be used to amplify the tiny voltage from a thermocouple to a higher voltage, readable by a microcontroller. Thermocouples can be used to measure very high temperatures, but they only output a very low voltage, hence the need for this amplifier. … more

Mini Amplifier Kit

This is a simple, low-cost amplifier kit based upon the LM386 amplifier IC. It has a maximum output power of 1W, which is good enough for amplifying mp3 players, phones and also the beeps and sounds from microcontroller projects. … more

DIY solar PV kit

This kit contains all the parts you need to start your off-grid journey. It is a DIY micro solar PV (photovoltaic) system, which includes a 10Wp solar panel, charge regulator and voltmeter, all encased in a laser cut wooden enclosure. This can be used to power small loads such as charging mobile phones, running a small sound system or even charging a laptop. … more

LM2574 Voltage Regulator Kit

This is a simple voltage regulator kit based upon the LM2574 step-down regulator IC. If you have every needed to efficiently step-down a voltage from anything up to 60V DC to 5V regulated then this kit is for you. … more