I have done the following work on Net classes in KiCad, this is derived from the what I wrote about IPC 2221 standard trace widths and Creepage and Clearance a while ago. I have been doing some work on my ROV, where I am trying to make two lights for […]
Electronics
36 posts
When designing boards, one of the things I spend a lot of time checking is if my UART transmit (TX) and receive (RX) lines are the right way round, or switched over. When the design gets to the printed circuit board (PCB) level, it can be nearly impossible to rework. […]
This looks like a way to allow for addressing nodes on a CAN, RS485 or DMX network without needing to use either DIP switches or PCB changes.
I have an Adeept Robot HAT, but the Blue Robotics BlueOS works natively with the Navigation hat (it’s probably pedantic, but neither of these two hats meets the requirements of Pi Hats). I was looking to see what the functionality of them both was, and ended up making a back-to-back […]
The Arduino Compatible Pro Micro and the Arduino Leonardo both use the ATmega32u4, which has built-in USB communications. While this eliminates the need for a secondary processor or UART chip, it allows the Leonardo to appear to a connected computer as a USB device, such as a mouse or keyboard, […]
To more accurately measure emissions from a DUT (Device Under Test), it is wise to calculate the path loss, or cable loss, from the receiving device, whether that is a LISN, a Current Clamp, or an antenna. We can do this by using the tracking generator on the EMI receiver […]
As part of my K9 and ROV projects, I am using at least one Arduino to control components such as the K9’s ears. Since the Arduinos will be fixed to the robots, I will program them via the Raspberry Pi. The version of Raspbian I am running is Raspberry Pi […]
When writing reports and other technical documents, you tend to need to use special symbols. Such as μ when referring to capacitors, or Ω for resistors. Most of these specialised characters and symbols are not available on a standard phone or computer keyboard. Usually, if they are available behind a […]
Farads (F) is the standard unit of capacitance in the International System of Units (SI). One farad is a massive unit of capacitance, representing the ability of a capacitor to store one coulomb of electrical charge with a potential difference of one volt between its plates. Given the enormous range […]
Ian Hughes’ 3D-printed files for K9 also include files to create internal components that fit under the side featuring the ‘K·9’ logo. (Yes, I have used an Interpunct.) The design features two panels held in place with 10 mm diameter magnets. Unfortunately, Ian does not include any colour information in […]
Bob Clough managed to get our Prusa 3D printer working again, so I am back to printing out parts of my K9. One of the parts is the K9 button panel, which is mounted on K9’s rear. Looking at the images I have assembled of K9’s timeline, I have the […]
The DIN Standard, DIN 47100, is used to identify the colour-coding for identifying cores in telecommunication cables.