iot Archives - Uncannier Software

RAK2245 LoRaWAN Gateway With An Outdoor Antenna

Uncannier Software / December 31, 2019

In this article I add an outdoor antenna to the RAK2245 Raspberry Pi 3B+ 915MHz gateway I created a month ago. This article is the third in my LoRaWAN series that started here. This part of my LoRaWAN adventure required much quiet contemplation and planning, often aided by fine whiskey. Motivation In the month that …

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RAK7204 LoRaWAN Node & The Things Network

Uncannier Software / December 29, 2019

In this article I setup a RAK7204 LoRa Environmental Node as an application on The Things Network with data reaching TTN via my RAK2245 LoRaWAN Gateway. This article is the second in a series that started here. RAK Documentation Detailed setup instructions can be found at RAK’s site: https://doc.rakwireless.com/quick-start/rak7204-lora-environmental-sensor/rak7204-lora-environmental-sensor Unboxing There’s not a lot in …

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LoRaWAN Gateway: RAK2245, Raspberry Pi 3B+ & TTN

Uncannier Software / November 30, 2019

In this article I create a LoRaWAN gateway using a RAK Wireless RAK2245 Pi HAT LoRa Concentrator and a Raspberry Pi 3 Model B+. The gateway is registered on The Things Network. This article is the first in a series: LoRaWAN Gateway: RAK2245, Raspberry Pi 3B+ & TTN RAK7204 LoRaWAN Node & The Things Network …

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CR2032 Lithium Battery Charge Level Measurement

Uncannier Software / June 15, 2019

The CR2032 3V lithium button cell battery is commonly used in small electronic devices, and especially BLE IoT devices. In this article I explain the complications associated with estimating the remaining charge level (“state of charge”) of this battery, and recommend a simple strategy for reasonably accurate measurement. I demonstrate this strategy in the Uncannier …

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Thunderboard – Secure Over The Air (OTA) Upgrades

Uncannier Software / November 10, 2018

In Thunderboard React – Over The Air (OTA) Upgrades and Thunderboard Sense 2 – Over The Air (OTA) Upgrades I explained how to enable OTA DFU, but in an insecure way. In this article I show you how to enable secure Device Field Upgrades (DFU) using the security features of the Gecko Bootloader. Gecko Bootloader …

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Thunderboard Sense 2 – Over The Air (OTA) Upgrades

Uncannier Software / November 5, 2018

Like the Thunderboard React, the Thunderboard Sense 2 doesn’t support Over The Air (OTA) Device Firmware Upgrade (DFU) out of the box. This article describes how to modify the stock Thunderboard Sense 2 firmware to enable OTA DFU. This article references my previous post, Thunderboard React – Over The Air (OTA) Upgrades, and concentrates on …

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Thunderboard React – Over The Air (OTA) Upgrades

Uncannier Software / November 4, 2018

Out of the box, the Thunderboard React doesn’t support Over The Air (OTA) Device Firmware Upgrade (DFU). This article describes how to modify the stock Thunderboard React firmware to enable OTA DFU. I’ll use Silicon Labs’ standard OTA BLE Service because this enables OTA DFU in the stock Blue Gecko phone app. In general, Silicon …

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Thunderboard, BLE, Embedded Software, IoT – A Mind Dump

Uncannier Software / November 4, 2018

Over the course of this year I’ve worked on a wearable project that utilizes a Silicon Labs Blue Gecko BGM113. I’ve also spent a bunch of time playing with my Thunderboard React and Thunderboard Sense 2. Along the way, I think I’ve picked up a few things. As an old bloke who’s been in this …

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