Archive for the ‘Applications’ Category

PLD (Part 5)

Part 1, 2, 3, 4, 5, 6 HL2 PLD may be used for safety applications too. In this configuration, the PLD is able to detect movements up to 7 m away within and almost 90° view angle. It features a PIR (Passive Infra Red) sensor from Panasonic. This sensors is available in different sizes depending on the required range; the enclosures […]

PLD (Part 4)

Part 1, 2, 3, 4, 5, 6 Using the HL2 PLD (Place and Leave Device) is easy and usefull. We ran the earliest tests on… soil moisture. The reason why we chose this one is that I have always liked to have a green plant in my office and this one might last longer than the others. Because it is fitted […]

PLD (Part 3)

Part 1, 2, 3, 4, 5, 6 The name PLD stands for “Place and Leave Device”. The original design is big enough to encapsulate its power reserve, the radio module, an arduino ™ microcontroller which will run your own code, and connectors for programming, debugging or plugging sensors. The radio module features the HL2 stack which handles data in terms of […]

PLD (Part 2)

Part 1, 2, 3, 4, 5, 6 Tadaaa ! This PL…D day Simple and flexible #IoT is here! Check out our new #Kickstarter campaign: https://goo.gl/aY8NG4  #LPWAN #Sigfox #LoRaWAN Next post on same subject

PLD (Part 1)

Part 1, 2, 3, 4, 5, 6 Dear arduinoos followers, You may wonder why the production line of arduinoos went to a stall along the last weeks… Holidays ? Well it sounds reasonable and logical, however except for a few days of leave here and there (actually in Lyon, Annecy, Saint Martin des Baleines and Val-Andre) during summer time this is not […]

Stepper Motors (Part 9)

Part 1, 2, 3, 4, 5, 6, 7, 8, 9 Let’s go back with an easier application. Still for my friend Valerio, the puppets magician, who built this adorable model-phonograph: It is all wooden made and powered by… a stepper motor, using the electronics which has been described in previous post and showed again here A switch […]

Simple command parser (Part 2)

Part 1, 2 In the previous version, the command parser is using one single alpha character as an opcode while the argument is computed on the fly using simple arithmetic. In this version, the opcode is extended to (almost) any number of characters and the argument is stored in a vector which is then converted […]

Simple command parser (Part 1)

Part 1, 2 Many applications require some interaction with the user. And one of the most basic manner to interact with an application is to use the serial communication port. Using Serial.print command is probably one the earliest command we all used to debug applications. The proposed command parser uses Serial.available() and Serial.read() functions and […]

Picture of the day

Could DSP produce some sort of modern art on some occasion ? Do you want to reproduce that ? Well, here is the recipe … Get a function generator and set the signal pattern to ramp, sweep frequencies from 80 to 90 Hz with 0.1 Hz steps every second. Connect the output to PlainDSP* and starting […]

Incremental rotary encoders (Part 10)

Part 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 Let’s have some fun with encoders. As I was thinking about an alternative solution for the stepping motors of our friend Valério’s puppet, I started playing around with some DC motors which are quieter than servo-motors and less greedy and less complex to drive than the steppers. Problem is that DC-motor […]