Raspberry Pi Pico board with 8MB Flash, integrated WiFi and Bi2CDesigned by Invector Labs in Sweden
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If you were looking for our combined WiFi/BLE board you can find it here. New and improved The Challenger RP2040 WiFi MkII is an Arduino/Micropython compatible Adafruit Feather format micro controll…Read More…
If you were looking for our combined WiFi/BLE board you can find it here.
The Challenger RP2040 WiFi MkII is an Arduino/Micropython compatible Adafruit Feather format micro controller board based on the Raspberry Pico chip. This design is based on our previous Challenger RP2040 WiFi board but now with improved RF-performance due to a 4-layer board design and a new Bi2C connector that allows you to connect all our Bi2C peripherals.
This board is based around the powerful dual core RP2040 Cortex-M0 device. The RP2040 have two Cortex-M0 CPU cores clocked at 133Mhz and comes with 264KB integrated SRAM. In addition to this we decided to put a 8MByte flash memory for your programs and file storage.
The WiFi chip on this board is the ESP8285 WiFi chip. For those of you that is unfamiliar with this device, it is basically an ESP8266 device with an integrated 1MByte of flash memory. This allows us to have an AT command interpreter inside this chip that the main controller can talk to and connect to you local WiFi network. The communications channel between the two devices is an unused UART on the main controller and the standard UART on the ESP8285. As simple as it can be.
The ESP8285 chip comes pre-flashed with Espressif’s AT command interpreter stored in the internal 1MByte of the ESP8285. This interpreter support most of the operating and sleep modes of the standard ESP8266 framework which makes it easy to work with. Talking to the device is as easy as opening the second serial port (Serial2), resetting the ESP8285 and start listening for events and sending commands.
We recommend using the WiFiEspAT library when writing networked applications. It works very well and comes with extensive examples for different usages. Installing this library is as easy as 1-2-3, simply press in the Arduino IDE and search for "wifiespat". Install the library and off you go. Check here for more details on how to use the library with the Challenger boards.
You can of course replace the default AT interpreter with your own software if it doesn't meet your requirements.
There are two buttons on the board. The button closest to the USB connector is the reset button. Use it whenever you need to reset the unit. It has exactly the same functionality as the RESET pin. Then there is the boot button towards the rear end of the board. This button must be used in conjunction with the reset button to reset the RP2040 into UF2 mode. Press the BOOT button, then the RESET button for a short moment. Then release the RESET button (while still pressing the BOOT button) and shortly after that release the BOOT button. This will place the board in UF2 mode and show up in the computer as a mass storage device.
In the recent years we have noticed that we are seeing more and more USB Type C cable laying around the lab due to the fact that all new phones and accessories use them. As of yet we haven’t seen any shortage of micro USB cables but we are not getting any new ones any more and old ones do break occasionally. So we decided to go for a USB Type C connector for this board. A bonus of this is that they are quite bit more durable and you don’t have to fiddle with the cable before plugging it in.
We’ve teamed up with Earle F. Philhower over at his Github page to provide Arduino support for our Raspberry Pi Pico based boards. All instructions on how to install the board support packaged as well as multiple examples on how to use the Raspberry Pi Pico processor.
The Challenger 2040 WiFi board is fully compatible with both the micropython package found at the Raspberry Pi site as well as Adafruits CircuitPython. Instruction are available on how to install the python interpreter of your choice is available on respective web site.
The Bi2C connector is a convenient way of adding external I2C based peripherals using a tiny flat flexible cable. More information about this simple way of hooking stuff up can be found here.
- Raspberry Pi Pico Dual Core Cortex-M0 @ 133MHz - 8 MByte FLASH Memory. - 264 KByte SRAM Memory. - 1 Hardware I2C channel. - 1 Hardware SPI channel. - 1 Hardware UART for the user (Serial1). - 1 Hardware UART connected to the network processor (Serial2 @ 1Mbit/s) - 12 Bit ADC.
- ESP8285 with internal 2MByte FLASH Memory - WiFi (2.4GHz) - Espressif AT interpreter - Communicates at 921600 bits/s
- Neopixel LED - LiPo charger circuit with 250mA charging current - Standard LiPo battery connector - USB Type C connector - Bi2C connector for external I2C and GPIO based peripherals.
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We normally pack items on Mondays and leave them at the post office on Tuesdays. Orders received after 12:00 (CET) on Monday will be shipped the following week.
Currently we provide two ways of shipping your products to you.
The first way is shipped in a padded envelop using the Swedish postal services called Postnord. The shipment is untraceable and not insured.
Delivery times vary between destinations but here are a few examples of delivery times taken from their website:
From what I understand it is usually the customs clearance in the receiving country that delays the shipments. All our shipments are correctly declared with an external CN22 with the proper customs information.
The second way is by DHL Express. With this shipping option your boards will reach you in no more than 5 working days, where ever you in the world you are.
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