Funky v3 with RFM69CW using LowPowerLab’s RF69 library

I’ve already blogged about using Funky v3 and RFM-2-Pi with the HopeRF RFM69CW module, only I used it with JCW’s Jeelib as I wanted to keep compatibility with my existing RFM12B based sensor network. JCW has done great job in providing compatibility with the RFM12B by tweaking the chip’s registers so that it becomes an easy replacement. Felixs’s…

Using RFM69CW instead of RFM12B

The rumors for RFM12B’s end-of-life two years ago seem to have been highly exaggerated now and the popular RF module is still available in abundance. HopeRF has introduced a pin-compatible upgrade, the RFM69CW. The module itself offers improved sensitivity and range compared to the RFM12B (+30%) at the cost of increased power consumption, making it probably a…

Speech generation with Node-RED

I am flooded with all sorts of notifications on my phone and that gets a bit annoying after time. Email, calendar, SMS, social apps, instant messengers, all sorts of push notification alerts and so forth mean I physically pick my phone to check what’s beeping probably 50+ times a day. One comes to the point to ignore…

DIY Internet connected smart humidifier

I worked on creating a Internet connected humidistat last week using my open source WiFi relay project as platform. We observe quite dry air at our house, I suspect this is due to the fact that we use fan coils for heating/cooling. Humidity levels at home are usually below the 30% mark, which poses a health risk along with uncomfortably dry…

Making IFTTT (If This Then That) talk to Node-RED

IFTTT (short for “If This Then That”) is a popular service which lets you trigger actions based on certain events that occur around the Internet. It is missing an important functionality (IMHO), namely WebHooks. A WebHook is an HTTP callback: an HTTP POST that occurs when something happens; a simple event-notification via HTTP POST. I explain…

WiFi Thermostat with weekly scheduler

Edit: The project is now available for sale in my shop, you can grab one here: [product id=”3785″]   The WiFi SSR board project changed a bit and I use classical relays instead of SSRs now. The reason is that SSRs tend to get quite hot when switching larger loads, and the 8A relays I last…

IoT tech talk recording

Thanks to all that participated in the IoT tech talk session that was held late yesterday, as promised I am adding a recording of the session It was suggested that the topic of the next hangout will be the ESP8266, I’ll set up some time and make an announcement post.   Page views: 3235

Google video tech-talk hangout anyone?

I’ve been meaning to hold a video Google hangout session on IoT topics for some time now, how about giving it a try? I imagine it as informal 1 hr tech-talk with the following structure 35 min presentation of a certain topic by a community presenter 15 min comments, Q/A on the presented topic 10…