Generic heating / cooling controller describes a bang-bang type thermostat based on a AtTiny25.
This article works up an example application using a Pt100 RTD sensor. Pt100 is the designation for a platinum (Pt) resistance temperature detector with nominal resistance of 100Ω at 0°. Pt has a nearly linear resistance / temperature characteristic and high accuracy. Continue reading Using a Pt100 RTD with my generic heating / cooling controller
Last update: 15th May, 2015, 5:45 PM
The N2006P is a inexpensive PID controller, typically for heating and cooling operations. There are lots of similar devices for under A$20 on eBay.
Above, the controller in a minimal test harness using a Type K Thermocouple for temperature sensing and 40A SSR mounted on a heatsink. (The SSR output should be protected with an MOV for inductive loads.) 480VAC 40A SSRs sell for as little as A$5 on eBay. Continue reading N2006P PID checkout #1
Last update: 5th May, 2015, 1:01 PM
The Slot.it CA20Z is Ford GT40 supplied as a ‘white’ kit which requires assembly and painting work.
Above is the part assembled body after painting with Tamiya X-7 acrylic. Continue reading Slot.it CA20Z build
Last update: 22nd April, 2015, 5:51 PM
I couldn’t help myself… I bought a Raspberry Pi 2 (RPi2) to evaluate.
The RPi2 has 1GB of main storage (double that of the earlier RPi B+), and a 4 core 900MHz processor against a single core 700MHz process in the the RPi B+. Continue reading Raspberry Pi 2 initial impressions
Last update: 16th April, 2015, 1:18 PM
Further to AIM 885 produces internally inconsistent results…
A new release, AIM885A appeared recently.
In the common theme of one step forward, two steps backwards, this version produces error popups when started.
The above popup appears twice when starting AIM885A. Just another symptom to undermine confidence in the system. It doesn’t make sense to me, and the program appears to otherwise start and run. Continue reading AIM 885A produces internally inconsistent results
Last update: 17th May, 2015, 6:57 PM