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Description:
Very easy to use, ultra-low power Wi-Fi module, which can run directly on batteries. Designed for developers at all skill levels from advanced to those just starting to build IOT devices.
Cricket is a perfect choice if you want to build IOT end nodes such as sensors, alarms, buttons, switches, etc. to report data and events instantaneously from remote locations. What is really cool is the ultra-low power feature, which will make your devices to run on single batteries for a very long time (for years in many use cases).
With Cricket you can connect various peripherals to Wi-Fi out of the box; send data and events either within your local network or to the internet. Simply attach a battery and peripheral(s) to Cricket and your device is ready to go.
Cricket comes with a native support of MQTT and HTTP POST / GET protocols that allow you to integrate your devices to a huge ecosystem of software and internet services such as e.g. IFTTT, Zapier, Blynk, Home Assistant, Node-RED, automate.io, Google Docs, Emails, Mobile Apps, etc.
Cricket works with all standard Wi-Fi routers and it doesn't require IOT hubs. No coding/programming is required as it comes with pre-installed software. You configure Cricket entirely over the air either from a smartphone or a laptop (without fiddling and troubleshooting toolchains). It can be done either locally (toe_device WiFi hotspot) or remotely from COTA cloud service (http://cota.thingsonedge.com)
FEATURES:
* Ultra-low power, deep sleeep 0.5uA, true 0A (i.e. in a button device)
* Operates directly on batteries 1.0V-3.5V (AA, AAA, AAAA, ...)
* Sends data and events with ~3 seconds latency
* Configurable Real-Time Clock (RTC) for regular wake ups
* Configurable MQTT brokers
* Configurable secure / non-secure HTTP POST/GET requests
* Configurable a battery monitor
* Configurable Analog or Digital inputs (for sensors)
* Built-in configurable temperature sensor
* Local configuration (directly on a Cricket over captive portal / WiFi hotspot)
* Remote configuration from the Cloud (optional)
* OTA firmware updates
Few examples of what you can build with Cricket:
- IoT Button
- IoT Doorbell
- IoT Alams
- IoT Water leak detector
- IoT Moisture sensors
- IoT Motion detectors
- Connect BBC micro:bit to WiFi with Cricket
- Connect Raspberry Pi Pico to WiFi with Cricket
- in general analog or digital sensors ...
Endless possibilities to build broad range of devices which report data in various forms to the internet / services / smartphones
Please check some of our projects (HERE) to get started with Cricket.
B1/B3/B5/B8/B20/B28 frequency band

The Pico-SIM7020E-NB-IoT is an NB-IoT (NarrowBand-Internet of Things) module designed for Raspberry Pi Pico. It supports multiple NB-IoT frequency band, can be controlled via serial AT commands, and supports communication protocols like HTTP/MQTT/LWM2M/COAP, etc. Due to the advantages of low delay, low power, low cost, and wide coverage, it is the ideal choice for IoT applications such as intelligent instruments, asset tracking, remote monitoring, and so on.
- Standard Raspberry Pi Pico header, supports Raspberry Pi Pico series boards
- UART communication, serial AT commands control, multiple communication protocols support, multiple cloud platform support
- Integrates 3.7V Li-po battery connector and recharge circuit, allows being powered from external rechargeable Li-po battery, or recharging it in turn
- 2x LED indicators, for monitoring the module operating status
- Onboard Nano SIM card slot for NB-IoT specific card
- Comes with development resources and manual (MicroPython examples)
Communication | |
---|---|
Frequency band | LTE-FDD: B1/B3/B5/B8/B20/B28 |
Data rate | 26.15kbps (DL) / 62.5kbps (UL) |
Communication interface | UART |
Baudrate | 300bps~921600bps (115200bps by default) |
Communication Protocol | TCP/UDP/HTTP/HTTPS/MQTT/LWM2M/COAP/TLS/DTLS/DNS/NTP |
Applicable region | Asia, Europe, Africa, Australia |
Operating | |
Power supply | External Li-po battery OR Raspberry Pi Pico USB port |
Battery interface | 3.7V ~ 4.2V |
Logical level | 3.3V |
Module standalone current | Idle mode: 5.6mA Sleep mode: 0.4mA PSM mode: 3.4uA |
Dimensions | 73.5 × 24.00mm |
Raspberry Pi Pico header compatibility
the Pico can be SMD-mounted (left), or attached via female header (right)

connecting with other expansion module and antenna
Raspberry Pi Pico and other boards shown are NOT included.
The pin headers are NOT soldered by default.
Supports communication protocols including: TCP/UDP/HTTP/HTTPS/MQTT/LWM2M/COAP/TLS
Pinout definition
Outline dimensions
The W5100S-EVB-Pico is a microcontroller evaluation board based on the Raspberry Pi RP2040 microcontroller chip and a full hardwired TCP/IP controller W5100S chip.
As the board uses the same pin layout as the Raspberry Pi Pico and includes W5100S embedded ethernet controller, giving you the power of a Raspberry Pi Pico with Ethernet connectivity in a single board!
There's a detailed getting started guide and firmware examples, and it's also the first RP2040-based device to receive AWS IoT Core Qualification!
Don't forget to grab a micro-USB cable for programming. The board comes with a pair of male headers
Features- RP2040 microcontroller with 2MB Flash
- Dual-core Cortex M0+ at up to 133MHz
- 264kByte multi-bank high-performance SRAM
- External Quad-SPI Flash with eXecute In Place (XIP)
- High-performance full-crossbar bus fabric
- 30 multi-function General Purpose IO (4 can be used for ADC)
- 1.8-3.3V IO Voltage (NOTE. Pico IO voltage is fixed at 3.3V)
- 12-bit 500ksps Analogue to Digital Converter (ADC)
- Various digital peripherals
- 2 × UART, 2 × I2C, 2 × SPI, 16 × PWM channels
- 1 × Timer with 4 alarms, 1 × Real Time Counter
- 2 × Programmable IO (PIO) blocks, 8 state machines total
- Flexible, user-programmable high-speed IO
- Can emulate interfaces such as SD Card and VGA
- Includes W5100S Embedded Ethernet Controller
- Supports Hardwired Internet Protocols: TCP, UDP, WOL over UDP, ICMP, IGMPv1/v2, IPv4, ARP, PPPoE
- Supports 4 Independent Hardware SOCKETs simultaneously
- Internal 16 Kbytes Memory for TX/ RX Buffers
- SPI Interface
- Other Features
- Micro-USB B port for power and data (and for reprogramming the Flash)
- 40 pin 21×51 ‘DIP’ style 1mm thick PCB with 0.1″ through-hole pins also with edge castellations
- 3-pin ARM Serial Wire Debug (SWD) port
- 10 / 100 Ethernet PHY embedded
- Supports Auto-Negotiation
- Full / Half Duplex
- 10 / 100 Based
- Built-in RJ45(RB1-125BAG1A)
- Built-in LDO (LM8805SF5-33V)
Pinout

The W5100S-EVB-Pico pinout is directly connected to the GPIO of RP2040 as shown in the picture above. It has the same pinout as the Raspberry Pi Pico board. However, GPIO16, GPIO17, GPIO18, GPIO19, GPIO20, GPIO21 are connected to W5100S inside the board. These pins enable SPI communication with W5100S to use the Ethernet function.
If you are using the Ethernet function, these pins cannot be used for any other purpose.
The RP2040 GPIO used inside W5100S-EVB-Pico is as follows.
I/O | Pin Name | Description |
I | GPIO16 | Connected to MISO on W5100S |
O | GPIO17 | Connected to CSn on W5100S |
O | GPIO18 | Connected to SCLK on W5100S |
O | GPIO19 | Connected to MOSI on W5100S |
O | GPIO20 | Connected to RSTn on W5100S |
I | GPIO21 | Connected to INTn on W5100S |
I | GPIO24 | VBUS sense - high if VBUS is present, else low |
O | GPIO25 | Connected to user LED |
I | GPIO29 | Used in ADC mode (ADC3) to measure VSYS/3 |
Apart from GPIO and ground pins, there are 7 other pins on the main 40-pin interface:
Pin | Name | Description |
40 | VBUS | Micro-USB input voltage, connected to micro-USB port pin 1. Nominally 5V |
39 | VSYS | Main system input voltage, which can vary in the allowed range 4.3V to 5.5V, and is used by the on-board LDO to generate the 3.3V |
37 | 3V3_EN | Connects to the on-board LDO enable pin. To disable the 3.3V (which also de-powers the RP2040 and W5100S), short this pin low |
36 | 3V3 | Main 3.3V supply to RP2040 and W5100S, generated by the on-board LDO |
35 | ADC_VREF | ADC power supply (and reference) voltage, and is generated on W5100S-EVB-Pici by filtering the 3.3V supply |
33 | AGND | Ground reference for GPIO26-29 |
30 | RUN | RP2040 enable pin, To reset RP2040, short this pin low |
Operating Conditions
Item | Description |
Operation Temperature MAX | 85C (including self-heating) |
Operation Temperature MIN | -20C |
VBUS | DC 5V (+/- 10%) |
VSYS Min | DC 4.3V |
VSYS Max | DC 5.5V |
Recommended maximum ambient temperature of operation is 70C.
Resources- Getting Started
- Firmware Examples
- AWS Device Catalog
- Getting Started with AWS IoT Core
- RP2040 Datasheet
- W5100S Datasheet
- Schematic
- Schematic Parts List/Gerber
- 1x W5100S-EVB-Pico
- 2x 20-pin male headers
- 1