Espruino Pico 'Shims'

'Shims' for the Espruino Pico are small adaptor boards that you can solder to the Espruino Pico to make it easier to attach devices. For example:

ESP8266 WiFi

WIZnet W550io Ethernet

Shim Collection

The shim collection is a single 10cm x 10cm board, containing several different shims for your Pico that can be snapped out.

Unfortunately we no longer sell the shim collection, however all board designs are available to download at https://github.com/espruino/EspruinoBoard/tree/master/Pico/Adaptors and can be sent off for assembly at a company like OSHPark

It consists of:

ESP8266 ESP01 0.05" Shim

Eagle CAD board and schematic

See the ESP8266 page for more information (and videos) on soldering this shim.

NRF24L01P 0.05" Shim

Eagle CAD board and schematic

Solder this on to the end of your Pico like the ESP8266 shim. The NRF24 should be positioned such that it overlaps the Pico.

See the NRF24L01P page for more information on software.

Pico	NRF24L01P
A10	CE
A0	CSN
A1	SCK
A2	MOSI
A3	MISO
A4	IRQ

var spi = new SPI();
spi.setup({sck:A1, miso:A3, mosi:A2});
var nrf = require("NRF24L01P").connect( spi, A0, A10 );

ESP8266 ESP12 0.1" Adaptor

Eagle CAD board and schematic

This board may need an Espruino Pico rev 1v4 board (or an Espruino rev 1v3 with external power) to work reliably.

Note: on rev 1.0 adaptors, you need to short pins 9 and 10 of the ESP8266 together (the two pins on the edge, nearest the Pico's pin A8).

// make sure the Espruino console doesn't interfere with ESP8266 if we're not connected to USB
USB.setConsole();
// Start ESP8266
Serial1.setup(115200, { rx: B7, tx : B6 });
var wifi = require("ESP8266WiFi_0v25").connect(Serial1, function(err) {
  if (err) throw err;
  console.log("Connecting to WiFi");
  wifi.connect("WiFi_Name","WPA2_Key", function(err) {
    if (err) throw err;
    console.log("Connected");
    // Now you can do something, like an HTTP request
    require("http").get("http://www.pur3.co.uk/hello.txt", function(res) {
      console.log("Response: ",res);
      res.on('data', function(d) {
        console.log("--->"+d);
      });
    });
  });
});

See the ESP8266 page for more information on software.

Pico	ESP8266
B6	ESP8266 RX
B7	ESP8266_TX

Component	Function
R1	1206 4.7k Optional pullup for GPIO16 and RESET
R2	1206 4.7k Optional pullup for GPIO0
R3	1206 4.7k Optional pullup for GPIO2

Bluetooth 0.1" Adaptor

Eagle CAD board and schematic

This connects to HC-05, HC-06 or HM-10 bluetooth modules. See the Bluetooth and BLE pages for more information on software.

Pico	Bluetooth
B6	Bluetooth RX
B7	Bluetooth TX
A8	Bluetooth Key PIO0 (if solder jumper on reverse is shorted)

Note: PIO1 on Bluetooth (the connection status LED) is connected to pads down the side of the Bluetooth module for an optional 0603 100 Ohm resistor and LED.

RFM69/RFM12B 0.1" Adaptor

Eagle CAD board and schematic

This adaptor lets you solder on a RFM69 or a RFM12B module

See the RFM69 page for information on software. There is currently no software for the RFM12B.

Pico	RFM12B	RFM69
A7	IRQ	DIO0 (IRQ)
B1	-	RST
B10	CS	CS
B13	SCK	SCK
B14	MISO	MISO
B15	MOSI	MOSI

Note:

• When positioning the device, check the silkscreen on the rear for an ANT marking, and position that away from the Pico, near ANT on the PCB.
• The outlines for the RFM12/RFM69 overlap, so to make sure there is no chance of a short when adding a module, please cover the row of unused pins that sits under the module you're soldering with a small bit of tape.
• There is an outline for a surface mount JST battery connector that sits under the Pico. If soldering your Pico flat onto the board (without pin sockets) please cover this with tape first to avoid shorts.

Arduino Adaptor

Eagle CAD board and schematic

This adaptor has its own page

MicroSD 0.1" Adaptor

Eagle CAD board and schematic

Pico	MicroSD
B1	CS
B13	SCK
B14	MISO
B15	MOSI

Note 2: On rev 1.0 of this board, GND is not connected. You will have manually to add a wire from GND of the Espruino Pico to pin 6 of the micro SD card connector. Adding a 0.1uF decoupling capacitor across the voltage rail is also a good idea.

Note: The resistor R1 is for a 1206-size 100k pullup resistor for the CS line. This should be added as it avoids unintentional SD card accesses that could occur before the Espruino Pico has set up the CS line properly.

SPI2.setup({mosi:B15,miso:B14,sck:B13});
E.connectSDCard(SPI2,B1);
console.log(require("fs").readdirSync());

0.05" Breakout Adaptor

Eagle CAD board and schematic

This adaptor simply converts the Pico's 0.05" pins to 0.1" pins that can be easily accessed. To use this properly you'll need to solder an unpinned Pico flat onto the board.

Note: The board is not handed and can be used any way up.

0.05" Breakout and Prototype Adaptor

Eagle CAD board and schematic

This adaptor converts the Pico's 0.05" pins to 0.1" pins that can be easily accessed, and also provides a prototype area on the end of the board. To use this properly you'll need to solder an unpinned Pico flat onto the board.

Note: There is the outline for a surface mount JST battery connector on the board.

• On early revisions this is on the Top of the board and would get in the way of the Pico (so needs covering up with tape first to avoid shorts).
• On later revisions this is on the Bottom of the board, and the Top has Pico This Side on the silkscreen.

0.1" Prototype Adaptor

Eagle CAD board and schematic

This adaptor provides a small prototype area either side of the Espruino Pico. It does not allow connections to any of the 0.05" pins, but can be used in conjunction with 0.05" shims like the ESP8266 or WiFi shims above.

Note: There is an outline for a surface mount JST battery connector that sits under the Pico. If soldering your Pico flat onto the board (without pin sockets) please cover this with tape first to avoid shorts.

Where can I get one?

Unfortunately we no longer sell the shim collection, however all the shims we've designed are Open Source.

You can view and download them here and can then send the designs (.brd files) to someone like OSHPark who will manufacture them to order for a very reasonable price.