MyIoT Boards etc

PCBs available from MyIot


These are products originally designed for use in a university laboratory. We are selling surplus PCBs. If a demand exists we'll order more.

We are making them available in an effort to recover the development costs. They are all quite expensive compared to any ESP8266 device purchased on (eg) ebay, but we are not a volume supplier. Postage from the UK doesn't help either...

Very few of these boards are for total beginners - if you're not sure which end of a soldering iron is hot please don't buy one, or at least get a friend to help you!

Most of our designs use USB power. The reason being that USB phone chargers are extremely cheap! We step down the voltage with a cheap 1117 regulator and use two 100uF tantalum capaitors with a 3528 footprint which are ok to hand solder.

With the sole exceptiom of MyWeb these are bare PCBs. If a demand exists for finished products we'll look into it.

Code is readily available for most of the finished products. Examples/links and assembly instructions will follow.

Postage & packaging is £1.50 for up to 5 PCBs

Ian




ESP01 I2C board


A low cost general purpose I2C board.

Originally designed to use a BMP180 sensor but many I2C sensors share a common pinout!

An on-board 3v3 regulator takes power from a USB A plug. This is not a data connection.

Power is typically provided by a phone charger.
Pins are available for serial programming

The voltage regulator & capacitors are surface mounted but quite easily hand soldered with a little care.

The photo shows a I2Cboard with a BH1750 lux sensor.

Many cheap sensors have the same pinout:

BMP180, BME280 etc.

You can even stack them - it's I2C after all...

The BMP/BME devices work better a few inches away from the board thanks to thermal conduction through the PCB tracks...
 £1 + £1.50 p&p

ESP01 OLED board


This board brings together the ESP01 & SSD1306 OLED display.

An on-board 3v3 regulator takes power from a USB A plug. This is not a data connection.

Power is typically provided by a phone charger.
Pins are available for serial programming & a separate I2C socket is available for (eg) a sensor such as the BMP180.

The voltage regulator & capacitors are surface mounted but quite easily hand soldered with a little care.

Assembling this device is a little more tricky than the I2C board above, but well worth the effort!


£1.50 + £1.50 p&p

ESP03 Experimenter board


This is a general purpose board with lots of features:
  • I2C ready (4 sockets)
  • DS18B20 ready
  • DHT11/22 ready
  • Mains relay (5A)
  • Push button
  • LED
  • USB powered
The photo shows a 'well' populated example.
All components are through hole except for the mini usb and voltage regulator.

Assembly is quite straightforward but care is required soldering the mini USB socket. This is not a data connection.

Programming: the push button is pressed (grounding GPIO0) when the power is switched on.

The photo shows a well endowed experimenter board!

Here we have a DHT11 & DS18B20 on board.

The I2C sockets are hosting:
  • SSD1306 OLED
  • BMP180
  • BH1750
This is a great board for learning & experimenting!

Don't forget - you also need a USB/serial adapter too!
 £3 + £1.50 p&p

NodeMCU TFT/touch board


You need a bigger display than the OLED? Colour too?

This PCB is used to interface a NodeMCU board to a ILI9341 TFT display. The XPT2046 touch IC is also connected if you have a display with touch capability.

The photo shows a 2.8" display which is a perfect match. These displays are readily available at surprisingly low cost!

A nice blog page (not ours) describing the use of these displays is available here

If you can solder, you can build this board.
 
£1 + £1.50 p&p

ESP12 - MFRC522 - RFID


A product of ours uses the MFRC522 RFID reader and ESP12.

This PCB has an on-board 3v3 regulator to supply the ESP12 and the RFID reader. The PCB allows for (eg) a piezo buzzer & white LED on GPIO4/5 - that's what we use.

Pins are available for serial programming, or you might prefer OTA.

Many components are surface mounted but quite easily soldered with a little care.

It's a slightly odd shape because of the case we use. It sits directly on the  cheap  SPI '522 readers which are readily available on ebay etc.

This version of the PCB has now been tested & is ready for release.

If you're wondering about the photo - we mount the piezo & LED on the 'other' side of the board.

Check here for an insight. We don't use a reset connection.
 £3 + £1.50 p&p

MyWeb


Essentially a software product which uses the I2C board. MyWeb has a webserver installed which allows uploading of new files, deletion of files etc.

It uses the onboard SPIFFS filesystem and integrates sensor readings with your scripted pages seamlessly. Just write your pages and upload them...

It's a foolproof(?) platform for IoT web authors. No programming required - just minimalist web authoring.

Take a look at the MyWeb page.

MyWeb is a platform for simple web authoring.

No server side help (PHP or CGI) but JavaScript & CSS work very nicely!

Design your pages & upload them to SPIFFS

You might have read that it's impossible to include live data in static pages?

Don't believe everything you read...

MyWeb is useful for aspiring IoT web programmers & students alike.
 £6 + £1.50 p&p
BMP180 not included