Lab Power Supply: OpAmps, Analogue Control and Digital Monitoring

I've progressed to the point where I think the second stage of the Lab Power supply is probably ready for an initial board to be made.

In this video I go through the OpAmp design, the digital monitoring, Linear control and the design of the shunt resistors in the second of three main boards in the system.

Might be time to have at least the Raw Power board manufactured so that I can progress to a stage where I can start testing the design of the second stage.

0-30V 0-3A Variable Bench/Lab PSU

I have started work on a Bench/Lab power supply design.

The following are Required features:

• 0-30V variable output voltage
• 0-3A Current Limited
• Current Limit notification (by LED)
• Output Enable button with notification LED
• Display set and actual output voltage and current.
• Static 5V output
• Static 3.3V output
• Display current flow of 5V and 3.3V circuits.
• USB Charge port
• USB PC connection port
• PC controlled via USB
• Internal Temperature sensor and PWM fan for quite operation.

Optional features

• LAN Connection to connect multiple PSU's together for Parallel or Serial use or Synchronised outputs
• Mode switch & LED for extended user interface controls

Design Requirements

• PSU Should be fully modular to allow for expansion or alternative uses or replacement of required modules with alternatives as required.
• PSU should be as efficient as possible
• PSU should be as cost effective as possible
• PSU should be as small as possible
• PSU should be as quiet as possible

Gineer - Variable Bench PSU #1  

 

Gineer - Variable Bench PSU #2 Raw Power



CremaBots for sale on Tindie

I have 3 more CremaBot's and have made them all available for sale on Tindie: https://www.tindie.com/products/gineer/gineer-cremabot-v2207/



I also uploaded a full write-up of CremaBot with the Schematic, cad designs, firmware and source code.

Let me know what you guys think and get one for yourself.

Microsoft - Intel Galileo - Upgrade to Gen 2?

In this video I answer a Youtube comment on a previous video "Microsoft - Intel Galileo" from John Ryder and discuss the differences between the Intel Galileo Gen 1 and Gen 2 development boards and talk about some example projects.

 

Let me know what projects you guys decide on to help you learn.

3D Delta Printer Magnetic Ball Joints Upgrade

In this video I show how I upgrade the magnetic ball joints I implemented on my Delta 3D printer to make them more stable and reliable. I then also show how I printed a 90 degree bracket which I made available and shared on Thingiverse.

Thingiverse - http://www.thingiverse.com/thing:436118
3D Modeling for 3D Printing Playlist - http://www.youtube.com/playlist?list=PLSO20OpG15P8Li0RPiHRwwYHfhVIqSMmj

Microsoft - Intel Galileo: Firmware Upgrade

In the video below I go through the process of upgrading the downloading the dedicated Arduino IDE for the Intel Galileo board and then upgrade the firmware.

 

 

I've also seen that there are a collection of new sample applications out to test at: https://ms-iot.github.io/content/SampleApps.htm

 

Windows on Fridges looks interesting.

 



CremaBot: Bug resolved and Rev2 PCB's ordered

I posted the video below yesterday after finally resolving a bug a found a couple of days before planning to complete the project (Isn't that always the case?)

This is actually the first time I have ever needed a second spin of the PCB I've designed. (Can't say that anymore).

I've just ordered and paid for the boards to be manufactured by OSHPark.com.

For some reason the silk screen does not display correctly on the site when ordering, but once the boards arrived last time in was flawless.

I was very impressed with the previous boards I received from them. This board is actually quite a bit smaller because I was also able to simplify the board and therefore get more density of components. The previous version was also double side loaded but this one is roughly evenly loaded on both side.