Archive for the ‘Hardware’ Category

Retour vers le futur

Allez, zou, pour une fois voici une publication en français ! Cà fait un moment que çà me grattouillait le clavier de composer dans ma langue maternelle, et je vois au moins deux bonnes raisons de faire une entorse à ma politique de publication. Soyons réalistes, l’anglais est une langue universellement comprise par les technophiles, […]

Shortage of Multilayer Ceramic Chip Capacitors (MLCC)

How come this tiny ultra familiar component is running out of stock ? The information raised by constructors and vendors states that the unexpected growth of demand lead to a recurent shortage of products as explained here, there and here again. These papers also give advises for those who did not contract the supply of […]

PCBs (Part 4)

Part 1, 2, 3, 4 PCBWay order review Delivery: The parcel arrived in my mail box 5 days after the order date, as announced !!! This is great news as we are all eager to get the real thing asap. Packing (Mail): The parcel was delivered by DHL: we know this company, I personally used […]

PCBs (Part 3)

Part 1, 2, 3, 4 Once we have our gerber files ready, it is time for “printing” the PCB. For a long time (and a long time ago) I used single sided coated copper Bakelite boards. Then I would copy the circuit  on copper using a special permanent ink pen (in negative) and immerse the […]

PCBs (Part 2)

Part 1, 2, 3, 4 Let’s exercise the tip and tricks that I shared with you in my latest post. Here are the requirements for this subject: Project: As a one idea per minute person, it was hard for me to stick to one project and one design. However, I had in mind the project […]

Particle sensors (Part 1)

Part 1 I am amazed by the massive improvements of sensors along the last 10 years. Not so long ago, some sensors would fit in a shoe box and require 24 VDC, not to talk about the interfaces, weight, etc. These improvements are mainly due to the incorporation of advanced sensors in smart phones: camera, […]

3D Prints: pen holder

Are you looking for an original present for (next) Christmas ? Here it is ! I made a couple of them for relatives and they loved it, so that I am 100% sure about my advertisement for this 3D printed product ! However, printing the parts might be really challenging because of the heterogeneity of the main […]

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 […]

3D Printing (Part 12)

Part 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 3D printing can be tiring for the nerves… For a week or so, I was enable to print full size parts without enduring severe problems such as splitting layers, irregular faces and even gaps. Here is an illustration of the prints before the fix (on top) and after the fix. The first layers […]

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 […]