BLE

The nRF52840 is fully multi protocol capable with full protocol concurrency. It has protocol support for Bluetooth LE, Bluetooth mesh, Thread, Zigbee, 802.15.4, ANT and 2.4 GHz proprietary stacks.

USB Type C

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.

Challenger 840 BLE – 8MB Features

The board is packed with hardware features, here's a short list of its most prominent ones.

– Sturdy USB Type C connector
– nRF52840 @ 64MHz
– 1MB internal chip FLASH + 256KB RAM
– 8 MByte external NOR FLASH memory
– 32.768 KHz crystal for clock generation & RTC
– 3.3V regulator with 250 mA peak current output, most of which is reserved for the board itself
– USB native support, comes with UF2 USB bootloader
– 20 GPIO pins
– Hardware Serial, hardware I2C, hardware SPI support
– PWM outputs on all pins
– 6 x 12-bit analog inputs
– Built in 500 mA LiPo charger with charging status indicator LED
– Power/enable pin
– 4 mounting holes
– Reset button
– Neopixel LED that indicates board status but that can be used by the programmer

Challenger 840 BLE Software

The Challenger 840 BLE board is 100% compatible with the Arduino framework. It has a unique board support package that fully supports all the features of the board. You can also install and run Circuitpython on the board if this is what you want to do. Check out the "Getting Started" tab for more information.

Other

The boards comes with loose headers that can be soldered to the board if your application requires it.

Main Processor

• nRF52840 @ 64MHz
• 1MB FLASH + 256KB RAM
• 8 MByte of NOR FLASH memory
• 32.768 KHz crystal for clock generation & RTC
• 3.3V regulator with 250mA peak current output
• USB native support, comes with UF2 USB bootloader
• 20 GPIO pins
• Hardware Serial, hardware I2C, hardware SPI support
• PWM outputs on all pins
• 6 x 12-bit analog inputs

Board functions

• 4 MByte external SPI FLASH memory
• Neopixel LED
• LiPo charger circuit with 500 mA charging current
• USB Type C connector
• Green LED for general purpose blinking
• Power enable pin
• 4 mounting holes
• Reset and DFU button
• Neopixel LED that indicates board status but that can be used by the programmer