Dec 112018
 
New Raspberry Pi Family Photo including Pi3A+ plus Zero WH

When a new Raspberry Pi model is released, I like to add it to the Pi Family Photo. The aim of doing this is to maintain a record of pretty much all of the versions of the Raspberry Pi which could be purchased by the public. (I don’t include prototypes.) What’s New This Time? A few people commented at the last update (Pi3B+) back in March that I hadn’t included the Zero WH. The reason for that was that I didn’t own one. I hadn’t considered it a ‘new Pi’ because it was the same […more…]

Dec 042018
 
How Much Power does Raspberry Pi 3A+ plus Use?

When a new Pi comes out, I usually publish some power consumption figures, mainly for those people who want to estimate battery durations. So my tests are quite simple. Procedure With just an HDMI screen and a USB keyboard/mouse dongle connected, the Pi is powered using a bench power supply at 5.2V (supply current limit = 3 Amps) wired, via my eMeter’s calibrated 20 Amp shunt, to the µUSB power input on the Pi. Current and voltage are measured using the eMeter (with clamp meter to confirm) and calibrated shunt whilst performing four different activities […more…]

Nov 282017
 
Make a Rain Alert System with Raspberry Pi

You’ve been left at home in charge of the laundry. It’s already washed and hanging out to dry on the line. But you were warned – on pain of death – to bring it in if it starts to rain. The trouble is, you’re totally into whatever it is you’re coding right now and you won’t even notice if it rains. You’ll be toast if it rains and the laundry gets wet. So which is it to be? Code or laundry? That was your choice – until now! Let’s Make a Rain Alert System We’re […more…]

Sep 192017
 
High Visibility Cycle Lights with Raspberry Pi, ESP8266 & RasPiO InsPiRing - Day 3

On day 3 (day 1 here, day 2 here) I wanted to see if I could use a Raspberry Pi (3 or 0W) as the WiFi access point instead of my phone. Knowing I was taking a slight risk (with my time) I flashed a µSD card with the shiny new Raspbian Stretch. I tweaked all the things I normally tweak (e.g. remove Wolfram and LibreOffice, enable SSH, SPI, I2C, camera etc. – I may well add a camera to this at some point WJDK). Then I went through this excellent tutorial here, which I […more…]

Sep 152017
 
High Visibility Cycle Lights with Raspberry Pi, ESP8266 & RasPiO InsPiRing - Day 2

We’ll start with a quick recap of day 1 (which you can find here). By the end of day 1 we had a proof of concept for a phone-controlled, Wemos-driven rear bike light, with indicators (turn signals), tail lights and brake lights. Day 2 started with a bit of real-world testing on the bike. It was determined pretty quickly – within one trip to the gym and back – that mobile phone control was NOT really the way to go. I wasn’t too upset about that because it wasn’t how I originally envisaged things anyway, […more…]

Sep 132017
 
High Visibility Cycle Lights with Raspberry Pi, ESP8266 & RasPiO InsPiRing – Day 1

A few months ago I thought it would be cool to use some of my RasPiO InsPiRing LEDs to make some indicators (turn signals) for my bicycle. But then I got busy completing and shipping the InsPiRing KickStarter, and then went away for the summer. But just as I was coming back, Lorraine Underwood tweeted about her High Visibility Jacket which reminded me of the idea. Obviously I wanted to do it my way and install something permanently on the bike with wireless control. Also I was due to purchase a new bike, which everyone […more…]

Jun 292017
 
How to auto-connect your Raspberry Pi to a hidden SSID wifi network

I have a Raspberry Pi 3B that acts as a web server for my temperature sensing network. I also use the same Pi for my Pi Word of the day tweets. It’s been pottering along fine for a long time. But last week we had a power outage while we had smart meters installed. For ‘network management’ reasons that I won’t go into, I’d recently decided to ‘hide’ the SSID (Service Set Identifier) of the router this Pi was connected to. I had thought it would automatically connect, having been connected before. But it didn’t, […more…]

Mar 272017
 
Parody - Sing a Song of Crowdfunding

Here in the UK it’s Monday morning and yesterday the clocks ‘went forward’, so we’re now in British Summer Time. Everyone could use a bit of ‘good cheer’ on a Monday morning, so I’m releasing a short parody video that I hope you will find amusing. Just Why? Simple answer. For fun. It’s an experiment. I hope it will make you laugh and you’ll want to share it. There’s quite a few geeky jokes buried in the lyrics, but it also tells a story. It took me 8 full takes to get it. I kept […more…]

Mar 032017
 
New Raspberry Pi Family Photo 28 Feb 2017

This week the new Pi Zero W was launched. A few weeks ago the new compute Module 3 was launched. It’s the Pi birthday party tomorrow. This can only mean one thing. It’s time for a new Pi family photo. I had an interesting exchange with a publisher this week who wanted to use the November family photo in a book. They made me an offer. I added some terms. A contract was then sent to me, which absolutely didn’t reflect my terms and was very biased towards them. Under advice I declined it. So […more…]

Mar 012017
 
How much power does Pi Zero W use?

It’s become traditional for me to do power measurements of any new Pi and update my chart. People have even started asking me about it on launch days (the cheek of it)… @DavidGlaude No. Not yet. Patience. That's usually a day 2 thing :) — RasPi.TV (@RasPiTV) February 28, 2017 Needless to say I have done some power measurements in my Zero W testing and here are the results. Essentially, the Pi Zero W seems to require 20 mA more than the no-wifi Zero. This is almost certainly due to the new radio chip. Methodology […more…]