Daikin ESP32 WiFi controller
An endeavour to add WiFi control to ducted air conditioner/heat pump system
Greg Davill's Projects
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d20: Panel Photos
Introduction Shortly after completing the d20 , I revised and fixed the panels so that they could be assembled without requiring the extensive rework to fix the swapped Gate/Source connections. You can find the updated files here: https://github.com/gregdavill/d20-hardware/tree/main/pcb/led-panels/d20_tri_r0.3 I’ve also released a r1.0 version, which is the same layout, but I’ve…
Allwinner S3 SoC: Accelerated h.264
Introduction I’ve been using an Allwinner S3 SoC for experiments with the FLIR Boson. The description from the website sums the device up nicely: S3 is a high cost-effective video encoding processor jointly developed by Zhuhai Allwinner Technology Co., Ltd. (“Allwinner”) and Sochip Technology Co., Ltd. (“Sochip”). Its built-in single-core ARM Cortex-A7 runs at 1.2GHz…
MSP430 custom ezFET Lite
Summary Texas Instruments has a range of 16 bit microcontrollers, the MSP430. To program these require what they call a Flash Emulation Tool (FET). Thankfully all their affordable development kits contain a small stripped down FET, known as the ezFET Lite. TI has open sourced this design and provide both the firmware and the schematics. I was given a tag-connect cable as a giveaway through the…
Dell XPS13 RAM Upgrade (7390)
I’d recently bought a new XPS13 7390 (non 2-in-1) laptop. I had bought the 8GB variant, how hard could it be to upgrade?
Boson Frame Grabber Part 6
Still alive? 🪦 Yes, it’s true this project did get dropped for awhile, it’s been about 3 years since the last blog post.
2,400 LED icosahedron (20 sided)
A tennis ball sized, 20 sided, LED clad, regular polyhedron Introduction The major challenge of making a smaller LED cube in my opinion is the LED panels. Commercially available panels are designed for video walls and typically made at 64x64 pixel as a minimum size. This seems to be a good trade off between cost/complexity/light efficiency. On my previous project mini-led-cube I had overcome one…
Miniature 3,456x LED Cube
Background Having seen a few projects creating LED cubes from panels used for LED video-walls I knew I had to try to build one myself. If you haven’t seen these before here are some examples I’ve seen. along with some notable people involved in their creation: @zzaurak , @1HappyTeddybear , @esden , @kernlbob . These cubes are all built using COTS video wall panels. The mains ones I’ve seen used…
Boson Frame Grabber Part 5
Details about the SoC architecture in the Boson Frame Grabber
Boson Frame Grabber Part 4
The new hardware for the Boson Frame Grabber will be based around the Lattice ECP5 family. Lattice make available a free IDE for this FPGA assuming you are not using a model with embedded SERDES. Since we are not, it’s perfect for our application.
Boson Frame Grabber Part 3
In this part I want to talk about the firmware, or code, this device will need in order to operate as I want.
Boson Frame Grabber Part 2
In part 1, I discussed the version 1 prototype I had built. Just after ordering the PCBs for that project I decided to start thinking about miniaturizing the hardware.
Boson Frame Grabber Part 1
Designing a thermal camera with the boson