This is the smallest of my dedicated 3-phase controllers using DRV10983 and STM32F030F4. The entire controller is the size of a fingertip and will run a 3-phase motor using sinusoidal algorithm. The controller works, but I was not impressed over it so far because it tend to loose control over the motor I use for…
This is my old universal motor controller that actually worked quite well. The main challenge I had was dodgy MOSFET’s. As I moved on I also moved to 60V and 50A + a Hat design that is a bit larger, but I have been thinking about updating this smaller design as well. Todo on rev…
This is the updated 8 x DC Motor Hat w/16 x Sensor IO’s. I have 3 Hat’s that I will order with PCB stencils this time. This Hat was basically made for a robot arm I have build by DC Motors. It’s a bit of fun to see if I can control the arm automated…
I don’t have the answer to this riddle yet, but I am searching for a more structured way of doing this blog that don’t involve myself digging into web development. I simply don’t have the time (or skills), so I am depending on either someone else assisting or finding a plug & play solution. At…
The logic for driving these stepper motors are straight forward as you apply 4 or 8 steps. The 4 step logic is faster and you rotate in a circle CW or CCW: Step 1: 0 + 1 Step 2: 1 + 2 Step 3: 2 + 3 Step 4: 3 + 0 This will create…
I bought a kit with AD8950 earlier that I consider using to create a programmable function/audio generator. AD8950 can generate waves to very decent frequencies and cost ca 10.- USD. AD8951 cost a bit more and it is straight forward to create a DDS/DAC based on these. But, I also need a driver stage where…
One of the ideas I am playing around with is to make my own programmable DC/DC PSU based on a MCU. The technique is very similar to a driver channel on a motor by generating a PWM signal. To get a DC out you add filter(s). If you have 48V and 50% PWM duty the…
Good news is that TPS54160 is working. C5 & C4 did the trick of getting me past 35V input. I tested 50V In for now. Minor is that the values shown on R1/R2 and R5/R6 are wrong. R1/R2 can be dropped to always enable the DC/DC. R5 needs to be ca 140K for 12V, the…
These are the 4 different motor drivers I have made so far. The smallest (at left) is capable of 24V @2A. It uses DRV10983 and one of the smallest STM32’s. I got it working, but I had some trouble controlling the logic to behave. The second one uses a DRV8313 that basically is 3 x…
Replaced ESP32 on the failing Hat and Wifi worked. Seems like I had my first ever failing ESP32 module. The Wifi Hat is No 2 from top. This stack includes (from top): 7 x Stepper Hat ESP32 Based Wifi Hat XPortHub XPortHub Raspberry PI 3A+ I have 2 USB ports connected here and both show…