MechaCrab Part 1: First Prototype

The robot so aptly named MechaCrab. This is my first attempt at a 2 DOF/appendage soft robotic quadruped. I’ve been mulling this idea over for a while as it came out of my initial designs of TAMI (I will get back to that project at some point…). The idea is to use 2 DOF soft […]

SSD1306 Power Consumption

Preface I’m currently doing a project that uses a tiny SSD1306 based OLED display. I’ve searched all over the internet but couldn’t actually find any data on current measurements done by people so I thought I’d do a couple and put them up here! The OLED I’m using is a standard 128×64 pixel version that […]

Anthrophex – Update 8-10-17

Its been a ton of time since I last did any updates on the ol’ human sized hexapod! I finally decided to go for dedicated motor controller ICs (Allegro A4950) as opposed to a discrete solution. These chips were pretty expensive (~¬£27 for the entire board…) driven by an STM32F030 once again generating software PWM. […]

FPGA based OV7670 – Further image compression

In my last post, I was talking about image compression methods, mainly DCT transform based along with colour transform based. I’ve now combined these together and have managed to break the 6fps barrier for video over UART! I’ve implemented 2:1:1, 4:1:1 and 8:1:1 subsampling (I think I can call it that?) with reasonable performance! The […]