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Prototype Micro-Slot Module & Proof of Concept

Unraveling nested nodes to get the prototype unit fabricated and built. It’s inevitable, jumps and via’s shall be sprinkled throughout to overcome the entanglements. This is the first micro slot module among others to follow. A sort of proof of concept to arrange a vertically mounted assembly that inserts into base station modules that host SBCs.

Suitable for socketed on perforated boards as well to accommodate prototyping or one-and-done projects. The idea is to set a template project for modules overall whereas time to completion is accelerated from idea to development and completion. The framework by which originated or reference design materials is dropped-in to become far easier to implement with more attention placed upon interface or code requirements to satisfy intended functions.


Programmable Pulse Timer Concept & Design

As more circuit builds come about, they’re increasing in density. Bought the parts. Gerber files, drill codes and netlist off to the fabrication house now. The programmable timing module design is finished. With hardware debugging ahead a few minor adjustments are expected once results are validated. This is a mixed-mode project where both plated through-hole and surface mount components are applied.

In a micro-slot format, this is a module intended for use in a free-standing application. With pulse speed and duty cycle setting completed manually via jumpers and a trimmer, separate outputs are assigned to independent and isolated pins at the micro-slot header.

Here is a tentative sketch of what it looks like.


RPi Sensor Station Prototype Evaluation and Debug

Today I finished the RPi 3 shield station prototype. Designed it, built it and the system works right from power-up. All the sensors were loaded and came online. The unit was booted with the Linux prompt to support the code for various sensors. The station is also driving each separate module developed so far as well. It’s also network aware at this location’s WiFi.

At some point, there will be a separate Arduino version of the station, but next up is the ‘universal’ power supply. Then the cooling module, and on over to additional planned modules for integration. 


Power Supply Assembly for SBC Modules

Here is the power supply I made from scratch to support the various modules developed so far. With more to come, this unit is sure to prove useful again and again. A fundamental layer module for various units that are developed; both analog and digital.

This is a power supply module with +/- 15V and +5V output ports. The module hosts a low-profile switching power supply (SPS) soldered and bolted in place for high board retention. At the output of the module is a screw-locking terminal strip for each available voltage point. To include reference designators as printed on the circuit board for ease of identification and termination. The power LED illuminates as an AC input voltage is applied.

An AC source voltage is supported with a male 3-point plug-detachable receptacle for a 115VAC 60Hz input. This unit comes with a matching male plug for safe and fully insulated AC connectivity. The module is fitted with a 3A circuit breaker that provides added protection between the SPS and its source.


4-Channel Signal Relay Board for SBC Modules

This is a video walk-through about a 4-channel contact closure relay module I made. An example application is demonstrated here by driving a micro-fan through a relay and connector signal path via a remote and physically isolated contact closure made at an input. There are many applications by which this module will prove both practical and useful.

It serves as a way to achieve a high-current path closure by simply providing a shorted connection at each input.

https://youtu.be/1FgDOD8vWGQ