Proto-PIC - Electronic Component Supplier, based in UK is owned and operated by RelChron Limited which was founded in 2006.

We started the company to develop a product for the Oil Industry, a HydroStatic Pressure Testing System, which is still in wide use today.

During the development of this system, we accrued a whole pile of electronic goodies that we decided to sell on ebay to recoup some of the money we had spent. The items sold so fast we realised that there was a real need in the UK to buy electronics at good prices. We maxed out our credit cards and bought up lots of parts we thought there would be a need for in the UK and was born.

We buy electronics for the UK Maker Community in bulk from reputable suppliers only, generally from the USA. Buying in bulk allows us to be able to take care of all the Import tasks and paying Duty so the products can be available to customers in the UK on a super quick turnaround.

Our favorite supplier has to be Sparkfun Electronics in the US. They have been with us right from the beginning. Some of their components were in the original revision of our Pressure Testing System and they were the first guys we bought our first big (huge) order from to stock the place up. We sell every item that Sparkfun sell, unless its illegal to sell in the UK (some radio products are banned as they interfere with our wavelengths over here). Even if we are sold out of the item, we can get parts from them within 48 hours - if we place the order on Monday afternoon - it will generally be here Wednesday morning - that's pretty awesome!.

We knew that we had the ability and love of the products to be able to create some of our own. Our first in-house developed product was the Proto-PIC Arduino Starter Kit. We have sold over 10,000 of these to date. We now have a full range of products that are our own concept and design.

Our tech support team are fluent in Arduino C and can help with any aspect of design, code or assembly of your project.

The BBC Micro:bit is an ARM based embedded system developed by the BBC for use in education. It is aimed at getting kids into electronics - something very close to our hearts here - and can be programmed via a web interface. It has LEDs mounted on the board so kids can make scrolling messages or simple graphics. They can even connect up other things like temperature sensors using the croc clip rings on the board. We were really excited when we saw this and have lots of BBC micro:bit goodies in stock.

One of the things we learnt fairly quickly when we started out is that Packing efficiency is key. If you are selling fairly high value, fairly fragile parts - you want to pack them fast but protect them well. I was always concerned about ordering parts from websites and paying top money for shipping only for them to arrive having been dropped into a 7p Jiffy bag. We wanted to do something different. So we did our research and we have sent all our smaller orders in plastic boxes, since about 2010. This costs us a bit more, but we would be happier knowing that your items are extremely well protected during transit and just generally look nicer when you receive them. The boxes are meant to be reused by the customer, they can be used for storage - or can even be drilled and cut to make a nice enclosure. - We got such a great response from our boxes we now sell them as a stock item on the website.

Buying things online is meant to be a happy time, every day is like Christmas! So with that in mind, we now send all of our orders out with a bag of free Haribo. This stems from the fact that I love Haribo, so I assume everyone does too - and also it creates some nice extra padding inside the box!


Our company registration number is SC298119 and our VAT registration number is 880518413

Our postal address is: 

RelChron Limited
Unit 17, Kirkcaldy Enterprise Centre
Myregormie Place
Mitchelston Industrial Estate




Our registered address is:


RelChron Limited

C/O Harley Hepburn

28 Townsend Place



Tuesday, 25 April 2017  |  Ed

A great shield. Makes connecting an XBee to an Arduino child's play. One of its best features is a switch that allows you to use pins 0 and 1 as Rx and Tx or pins 2 and 3. Without that switch, you would run into problems uploading sketches to the Arduino - I have issues in the past with an RS485 board in the respect.

Does the Job
Tuesday, 25 April 2017  |  Ed

Nice little breakout board. You need a couple of Bee headers and some 0.1 spaced pins. Soldering these on requires a steady hand but I managed it first time with no problems.

Great fan slow delivery
Tuesday, 25 April 2017  |  David

The fan works great, though it took longer to arrive than I had hoped

And jelly beans included
Wednesday, 19 April 2017  |  S

I'd found the IR Tx/Rx pair from an American company, but was much happier to find a UK based reseller.
The IR pair were just what I needed to mend my Roomba. Even with my ham-fisted soldering.
And to top it off the package came with a small bag of sweets(no idea why) and they were very tasty .
First class post cost more than the components, but it still works out good value.

just what i needed for a quick prototye
Tuesday, 18 April 2017  |  Michael

arived quickly with some sweets

Adafruit connector
Tuesday, 18 April 2017  |  Mark

Has the Adafruit connector for connecting to Powerboost 1000c, useful.

Wednesday, 12 April 2017  |  David

Excellent service, product as described

Not very well finished
Tuesday, 11 April 2017  |  Thomas

Not a nice finish , tool marks can be seen from what looks like a bit of stamped out metal . and the holes dont line up with the 16x2 LCD module ,
In the advert , it all looks great so i guess i just got a bad one , i wont be using it on my new project ill buy another from elsewhere next time , one that fits .

Great case: fits great, works great
Monday, 10 April 2017  |  Karl

Does exactly what it's supposed to do. Allows you to run your microbit anywhere without the hassle of a separate battery pack. Does not impede access to buttons, or interfere with the LEDs.

The 3.7v LiPo batteries would not fit the Sparkfun charger.
Monday, 10 April 2017  |  Joseph

Thre charger itself works fine but the JST ph2 connectors did nor work

Free Technical Support
Fast Delivery Options
Customer Loyalty Scheme

Proto-PIC - UK Distributor of Sparkfun, Arduino, Adafruit, BBC Micro Bit electrical componentsProto-PIC ; UK Distributor of Sparkfun, Arduino, Adafruit, BBC Micro Bit electrical components