#diyengineering

Got lots and lots of solenoids?

We were chatting with a customer and realized we need a better solution for customers with many solenoids or other high-current on/off loads. This breakout will make it easy to control and power many inductive or high-current loads. An mcp23017

https://www.digikey.com/short/nf4pn2rc

expander over I2C provides 8 output pins, each connected to an AO3406 N-Channel FET

https://www.digikey.com/short/rh398zbh

with a 1N4007 flyback diode.

https://www.digikey.com/short/343h9890

Ladyada's desk gets a scope cart

We've always wanted a portable scope cart

for our workspace to have our test equipment either by the desk for firmware work or at the soldering worktable for rework debugging. At our new office, we finally have space for one! We picked up this 'dental cart'

- It is not super fancy, but it is metal, and it came together fairly easily. We like the mini top shelf for the scope and the second shelf underneath for the power supply and electronic load. The drawer can hold leads or probes. We've locked it next to our desk so we have more desktop space, and it's easy to peek over as we bring up new boards like the metro RP2350

Looking for Engineering Model Making? Here’s Everything You Need to Know! Click the link for more information:

How to Budget for Your Engineering Model Project

Managing costs is important for any model making project. Start by listing all required materials, tools, and electronic components. Research costs and look for affordable alternatives without compromising quality. Plan your purchases to avoid unnecessary spending. Small mistakes or trial-and-error may require additional resources, so allocate a buffer in your budget. Prioritize essential materials and tools, especially if it’s your first project. Budgeting ensures you can complete your model without interruption and allows for better decision-making in choosing materials and techniques. A clear budget plan also helps students and professionals manage resources efficiently.