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Introduction 12V Battery Test Set-up 12 V Battery Measurements 4.2 V Li-Ion Cell Test Set-up 18650 Cell Measurements NiMH AA Cells Conclusions   Introduction  In this blog, I intend to carry out testing on some individual batteries I have available to me with the BT3554-01. I aim to carry out measurements over the discharge cycle of a 12 V VRLA cell battery and a 4.2 V Lithium Ion battery. Overall I hope to be able to show how the AC resistance measurements ...
Introduction Emergency DC Battery Systems Taking Measurements Test Results Analysis in Excel Effects of Bolted Connections on AC Resistance Conclusions Introduction  This aspect of the RoadTest is to test the Hioki BT3554-01 in a real world scenario, that the instrument is specifically designed for. At one of the sites I provide engineering assistance to, there are banks of sealed lead acid batteries that provide backup power to essential systems. I will take AC ...
I am getting ready to launch a MicroZed Roadtest. the carrier board for this roadtest contains connectors for Arduino Compatible Shields. I just wanted to get your feedback on shields to consider including.   So, here is the roadtest:   https://uk.farnell.com/avnet/aes-z7mb-7z020-som-g-rev-g/eval-board-zynq-7000-arm-cortex/dp/3491066?scope=partnumberlooka… https://uk.farnell.com/avnet/aes-arduino-cc-g/microzed-carrier-card-kit/dp/2915532?scope=partnumberlookahead&os ...
I plan on roadtesting thw Trinamic TMCM-0960-MotionPy Single Board Computer at the end of February. Before I launched the roadtest page, I have asked for some community feedback ( Top Members  Top Members ) and I also wanted to get a conversation going with members who would be interested in roadtesting this board.   So, what do you think of this board? What are your thoughts about roadtesting it? Besides the board, what other things do you think would be helpful to roadtest or build ...
Following my problem trying to get the motor to run, I thought I'd check the board with a microscope to see if there were any issues. It all looks good an there are no obvious shorts, melted components or burns.   Power USB TMC2300  ESP32  ...
As mentioned in the last post TMC2300-IOT-REF - Remote controlled Stepper Motor - Getting to blink there was an issue with the connector on the motor. I found a grove connector was about the right size if I trimmed it slightly so I soldered that on.   Get your motor running The next thing to try is to have the motor running. For this there are a few steps needed. Firstly to provide some power then to send the right serial commands to the controller chip and the finally to enable motor outpu ...
This is a short review of the SensePeek PCBite kit, 4019.  When I was reading the recent roadtest reviews of the PicoScope 6424E, the PCB and probe holder kit that came with it looked really useful.  These are actually a rebranded version of the SensePeek kit, elements of which can be bought separately.  I acquired the kit, model 4019:   The kit comes with all the above (not shown are 2xspare probe pins and a cleaning cloth)   Base Plate This is a double sided, A4 siz ...
The TMC2300-IOT-REF is a reference design for the TMC2300 stepper motor driver controlled by an ESP32, it also has a CH340 serial to USB chip for programming and debugging the ESP32 via a host PC and a TP4054ST25P for battery charging. The TMC2300 is controlled from the microcontroller via UART on a single pin for TX and RX so a resistor divider (on the left of the diagram) is used to split this signal for the ESP32. The full schematic for the board is provided on the TMC website. https://www ...

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