5-146281-2 – Pin Headers for Arduinos and Breadboards
MicroCrystal RV-8803 – A Really Accurate RTCJune 17, 2019-RTC chips traditionally were the domain of Maxim and NXP. Switzerland-based MicroCrystal recently made quite a buzz with its RV-8803, which offers simple integration, an I2C interface and extreme accuracy. Let us start out by looking at a system overview. Figure one shows how this I2C RTC is made up internally – interested observers note […]
Analog Devices’ LTM2887 – If a Digital Bus Needs Galvanic IsolationJune 15, 2019-In theory, digital buses are intended to connect things to one another. Sadly, one sometimes wants but a logical connection – in many cases, galvanic isolation helps out. Should you ever feel like isolating very fast buses, definitely give the LTM2887 a chance. From a technical point of view, Linear Technologies attempt at entering the […]
AVAGO APDS-9008 or APDS-9005-020 – Keeping an Eye on Ambient LightJune 14, 2019-Recent times saw quite a bit of interest for part numbers such as the APDS-9008 or APDS-9005-020 – they are a very interesting type of ambient light sensor. One of the oldest questions in regards to light sensors involves their spectral sensitivity. If a part is to output but one voltage level, the conversion between […]
STMicroelectronics’ LIS2DH12 – Low Power Motion SensingJune 12, 2019-Apple’s iPhone introduced gyroscopic sensors to a wider range – before that, accelerometers were not commonly found in consumer hardware. STM sells excellent parts which, however, get little media attention – time to take a look at the LIS2DH12. Integrating the part into your circuit as an MPU6500 alternative or MPU9500 alternative is not difficult. […]
Panasonic AMG8833 – FLIR for cheapJune 7, 2019-FLIR made infrared thermal sensors cool – sadly, their parts are all but cheap (and suffer from export control problems). Panasonic’s Grid-EYE family is a low-resolution alternative which comes at significantly lower cost. From a technical point of view, Panasonic’s image sensor could not be simpler. We are looking at an 8×8 sensor with an […]
DipTronics DTS-62R-V – Small Switch, Very Big (and Very Cheap)June 5, 2019-When yours truly was but a lowly cadet, various US manufacturers produced (pricey but quite reliable) switches. Chinese vendors recently started to catch up – seeing the DTS-62R-V top our customer interest list shows that the run stage of the crawl-walk-run cycle is reached. DipTronics has been around the Asian switch market for ages, exhibiting […]
Small companies usually lack the dedicated engineering…
Small companies usually lack the dedicated engineering facilities required for prototyping parts with extremely fine pitch – getting BGA soldered at home is tremendously difficult and almost impossible. A nice way to get small companies interested in your product involves offering evaluation boards. These usually end up in a breadboard or a socket, where the pitch of 2.54 millimeters has established itself as a quasi-standard. This odd pitch, quite incidentially, dates back to imperial units – it is equal to 0.1 inch.
When designing such breakout boards, cost should not be the primary factor. Saving money on the headers is stupid – if they corrode, precision parts get problems. Due to that, using high-quality mechanicals from an established company such as TE Connectivity makes perfect sense.
The 5-146281-* family can be considered the standard offering for the 2.54mm standard. They are series of pins attached to one another, which can be broken down with scissors if smaller dimensions are needed. Acquiring them is not particularly difficult. TE Connectivity offer them in a range from 1 to 40 pins in a single row, the individual part numbers can be taken from the table.
…the part number contains information about the number of pins found in the header
The parts at hand should not be limited to Arduino shields and similar interfaces. They can also be used to create test points where an advanced debugging peripheral can be attached. The scope ranges from in certain in-circuit debuggers such as Microchip’s ICD family to custom testing rigs used for product development.
Interestingly, pricing can be an issue. The two-pin variant starts out at like 50 cents, while the 40 pin variant sets you back like 3.6€ – if you have time on hand, breaking parts down in-house is a neat way to reduce costs.