The primary theme of this group is electronics and adjacent subjects: sensors, mechatronics, opto-electronics, and so on. The group is open for both members of Hacker Dojo and non-members.
If you are a beginner, you're welcome to the group. At the same time, please be diligent and do the proverbial homework (i.e. preliminary research).
We can have several types of meetings:
Lecture/Seminar/Talk If there is theme you'd like to hear about - let us know. May be we can find an expert, who would give a talk. May be we can put together a descent lecture ourselves.
Clinic/Meetup
Design Review (with slides)
Past Events
Talk: Gallop Through Sensors
By: Nick Alexeev
When: 7-9pm on Monday, Sep 20
Where: Cave, Hacker Dojo
An overview lecture on sensors. High level principles of sensing. List of many physical parameters that are commonly sensed (from temperature to magnetic field) and types of sensors that sense them. Follow-on lectures are possible, covering in detail the related aspects, or particular groups of sensors.
Somebody asked about pulling information from image sensors. Here's an open source camera project: http://www.elphel.com. These guys published schematics and bill of materials. Link courtesy of Sean Casey.
By the way, here's a web group dedicated to sensors: http://tech.groups.yahoo.com/group/sensorforum.
Talk: Overview of Infrared Communication
By: Chris
When: 7-9pm on Monday, Sep 27
Where: Cave, Hacker Dojo
Chris’ interest is hardware for laser tag games. His slides explained Sony’s IR communication protocol, several approaches for implementing a 2-way communication engine with Arduino.
Talk: Interfacing Sensors: analog signal interfaces and data buses in embedded systems
By: Nick Alexeev
When: 7-9pm on Monday, Oct 4
Where: Deck, Hacker Dojo
The focus of the talk are the analog and digital interfaces between embedded system components. Sensor connected to a microcontroller is an example of such interface. While this is a follow-on for the 1st sensors talk, it’s almost completely decoupled from the 1st one. Analog signal interfaces and data buses in embedded systems are interesting topics in their own right.
Often, when we use sensors, many of the physical principles and signal conditioning intricacies are already taken care of by the manufacturer. This talk deals with a practical step – connecting sensors to the rest of the system. We shall touch:
- Analog interfaces: single ended, differential, 4-20mA
- Pseudo-analog: frequency, pulse width
- Digital busses found in embedded systems (of moderate complexity): SPI, I2C, RS-232, RS-422, RS-485, CAN
Talk: OpAmp circuits
By: Matt Hancher
When: 7-9pm on Monday, Oct 11
Where: Deck, Hacker Dojo
Talk: DC-DC voltage regulators
By: Nick Alexeev
When: 7-9pm on Monday, Oct 19
Where: 140B, Hacker Dojo
Talk: Image sensors
By: Brian Jelinek
When: 7-9pm on Monday, Oct 25
Where: Deck, Hacker Dojo
Design review: Audio Generation Using Microcontroller
By: Chris Phoenix
When: 7-9pm on Monday, Nov 01
Where: Deck, Hacker Dojo
Discussion: Microcontroller topics
Hosted by: Nick Alexeev
When: 7-9pm on Monday, Nov 08
Where: Deck, Hacker Dojo
Several medium-sized microcontrollers from different families were compared: PIC18F4620, ATMega32A, LPC2105 (ARM7), MSP430F149
Talk: OpAmp circuits
By: Matt Hancher
When: 7-9pm on Monday, Oct 11
Where: Deck, Hacker Dojo
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