This is the fully assembled version of my RN2483/RN2903 breakout board, available here as a bare board.. All of these boards are hand-assembled to order with the regulator option you selected, here...Read More…
This is the fully assembled version of my RN2483/RN2903 breakout board, available here as a bare board.. All of these boards are hand-assembled to order with the regulator option you selected, here in the USA by yours truely, and may take a couple of days to ship.
This breakout board offers an affordable solution for makers working with the popular RN2483A and RN2903A LoRa transceivers from Microchip, widely used for LoRaWAN. The layout of this breakout board is based on the the datasheet reference designs. This board breaks out all 14 GPIO pins to a row of 0.1" pin header, and the power and serial communication pins to a second row of 0.1" pin header.
The RN2483A and RN2903A are identical except for their transmission frequency and which world regions they are approved for use in. The RN2483 operates at 433mhz and 868mhz, and is approved for use in Europe, while the RN2903A operates at 915mhz, and is approved for use in the US, Canada, Australia, and New Zealand. The markings on these breakout boards correspond to the RN2483A; if using with RN2903A, use the antenna marked 868mhz (the low frequency antenna is not used). Prior to ordering, please verify that the RN2903A or RN2483A is legal to operate in your jurisdiction.
The RN2903A and RN2483A are an updated version of the RN2903 and RN2483 - this comes with both a firmware and apparently a hardware rev as well; the differences are very slight - my understanding is that it's a "bug fix" type change. The change to the A versions of these is responsible for the availability issues in the first half of 2017.
The pin layout for the serial and power pins is designed such that it can be plugged into breadboard alongside an Espruino Pico, and the pins will line up.
Since many of our customers are using these with 5v microcontrollers (such as Arduino), we now offer a level shifter as an add-on. These level shifters are mass produced 4-channel bidirectional fet-based level shifters. See the diagrams below for wiring examples.
The RN2483 supports communication at 868mhz and 433mhz - however, I've heard from my customers that they only install the high 868mhz SMA connector. In order to keep costs down (since these are all made to order), I've made the SMA connector for 433mhz on the RN2483 optional.
This board can ship with three regulator options. If you have a regulator on the RN2483/RN2903 board, it can be used to supply 3.3v to the rest of the project (within the limits of the regulator - 1A, less if Vin exceeds 5v due to heat dissipation). See the wiring diagrams below.
No regulator - If you will already have a regulated 3.3v supply, there is no need to use a regulator on the RN2483 board. The board will be shipped with a 4.7uf cap installed on the pads for the output capacitor, but no regulator or input capacitor.
ZLDO1117 - The ZLDO1117 is one of the best 1117-series regulators available, and provides a dropout of around 1.1V at maximum load (meaning a minimum of 4.4 V input to get 3.3v out), and permits a maximum input voltage of up to 18V. Currently, ZLDO1117 3.3v regulators are on backorder with major suppliers, with no stock expected until december - in the meantime, we are using the NCP1117 regulator, which has nearly the same specs.
AP2114 - The AP2114 is a modern LDO regulator that has much lower dropout than the 1117 series, as low as a few tenths of a volt. This allows it to put out 3.3v when powered from a 1S LiPo battery. However, the maximum input voltage must not exceed 6 volts.
The Things Network is a thriving community dedicated to LoRaWAN which has a great deal of useful information available to makers experimenting with these sort of devices:The Things Network
For use with Espruino, see the Espruino RN2483 module documentation
For use with a Raspberry Pi, Michael Honaker of Beach Cities Software has written some demo code that can be valuable to help get started, available from his Github: Interfacing with C Interfacing with Python
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Domestic shipping via USPS Priority Mail - USPS advertises 1~3 day shipping time within the continental United States. This is a flat rate for any quantity of items - this is your chance to buy piles of small cheap items like my mini prototyping boards without paying extra for shipping!
Michael | June 5, 2017
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I build projects with Arduino (ATtinies almost exclusively, never anything bigger than a '328p) and Espruino (often both working together), and I make a lot of circuit boards for these projects. Particularly after using my ATtiny-prototyping board for my own projects, I realized that these would be useful to other people, and decided to start selling them here on Tindie.
Strip Board, Protoboard, prototyping board, solderable breadboard - whatever you want to call it - it has been a mainstay in electronics prototyping for decades, and hasn't changed much in the interim (not even in production quality, as they're still often single-sided and/or manufactured from low-grade phenolic resin instead of FR4). My prototyping board creations bring these into the modern era, offering a combination of 0.1" through-hole prototyping areas (consisting of groups of 2, 3 or 4 pins connected together, like solderable breadboard) and pads for common surface mount packages connected to through-holes for easy soldering. To handle projects of all sizes, I offer prototyping board as large as 4" x 4", down to less than an inch square in my Mini Protoboard line. Unlike most commercial prototyping board, these boards are made to the same quality standards as real PCBs. Through-holes are plated, and the boards are double sided. These are offered in both generic versions, and ones tailored to specific microcontrollers, like the Tiny84/85, or microcontroller boards, like the Espruino Pico, Arduino Pro Mini, and the wildly popular ESP8266.
ATtiny breakout boards:
I love the ATtiny lineup, particularly some of the less popular ones, like the incredibly full-featured ATtiny841, ATtiny1634, and ATtiny828. Breakout boards for these that had the features I wanted were not readily available - so I made my own. I've since expanded my product line to include breakout boards for the ATtiny861, ATtiny167, and ATtiny88 - and all of these are available both as bare boards and assembled. In addition to designing the hardware I also maintain [ATtinyCore Universal](https://github.com/SpenceKonde/ATTinyCore), which enables Arduino support for all these ATtiny's and more.
I also sell a number of other boards to fill what I felt were gaps in the market, including a breakout board for the popular LoRa/LoRaWAN modules from Microchip (the RN2483 and 2903), which has become one of my top selling items. I also sell MOSFET drivers and breakout boards for logic level MOSFETs operating at logic levels of 2.5v and lower - while a great number of MOSFETs are available that operate with very low gate voltages, these are almost invariably SMD parts which are difficult to use without a properly designed breakout board.