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License: GNU Lesser General Public License v2.1

allwizek1-hardware's Introduction

AllWize

Arduino-compatible library to interface RC1701HP-OSP/WIZE radio modules.

Compatible radios:

RadioCrafts RC1701HP-OSP (Ondeo version)
RadioCrafts RC1701HP-WIZE (Wize version)

Compatible platforms:

AVR (Arduino Uno, Arduino Leonardo)
SAMD21 (Arduino Zero, Arduino MKR family, AllWize K2)
ESP8266
ESP32

AllWize K2 support

The AllWize K2 is a SAMD21-based board with an RC1701HP-WIZE radio module.

Arduino IDE

To add support for it in the Arduino IDE you must install a custom board. Full instrucations can be found at the AllWize Wiki, but a summary is:

Install the current upstream Arduino IDE at the 1.8.7 level or later. The current version is on the Arduino website.
Start Arduino and open the Preferences window.
Enter https://raw.githubusercontent.com/AllWize/allwize-boards/master/package_allwize_boards_index.json into the Additional Board Manager URLs field. You can add multiple URLs, separating them with commas.
Open Boards Manager from Tools > Board menu and install "Allwize SAMD Boards (32-bits ARM Cortex-M0+)"
Don't forget to select your AllWize board from Tools > Board menu after installation.

PlatformIO

The AllWize K2 is not yet supported officially in PlatformIO, still you can configure it manually. Check the AllWize Wiki for further instructions.

Documentation

Visit the online documentation for the AllWize Library.

License

AllWize library is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

AllWize library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with AllWize library. If not, see http://www.gnu.org/licenses/.

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allwizek1-hardware's Issues

Sensor's power pins next to connectors

It does not make sense to pot the power pins SNS_PWR so far from the connectors; why not putting it next to the Grove connector?
Moreover, maybe make sense to put one of them for each sensor

Silkscreen + Top Paste

RC + UFL + D1+resistor + D2+resistor --> Doesn't have to appear on Top Paste
(red circle on image)

U4 + U3 + SCL resistos + SDA resistor --> Include silkscreen designator on PCB
(white circle on image)

RF include a text, but I can't to read it.
(green circle on image)

RF Adaptation

Recomendation: join GND

[Allwize] Missing info in the silkscreen

I'm missing proper information in the silkscreen for these designators

J3 (RC programming header) - RC
J4 (serial selector) - UART
J6 (sensor reference) - SNS_PWR
J7 (I2C grove connector) - I2C
J8 (Analog grove connector: A0, A1) - ANA
J9 (Digital grove connector: D5, D6) - DIO
J12 (ICSP) - ICSP
J13 (module flashing, not sure this is needed since it's still a testing feature)

L1 in RevA BoM is not indicating the maximum current

Impedance matching network

The impedance after the RC module is not matched although the line is completely matched ... we will need a Pi network to adapt, as recommended in the RC AN025

[Allwize] BOM - Part Number Jumper

Include on BOM the jumpers

[Allwize] Missing assembly plan

Missing designators J1, J2, J10, J11, J14

[Allwize] Connectors wrong silkscreen specification

The direction of the connector needs to be specify (TOP / BOTTOM).

Mark the temperature sensor as "Temperature sensor" not "Ux"

Will give a better understanding and user experience if the user knows which IC is the temperature sensor, in order to play with it. Since he/she likely will touch it, will be good to have it in an accessible location, far from other ICs, jumpers and components

[AllWize] Via annular ring too short (General)

Some pads needs more annular ring space. This can provoke bad fixation on PCB.

Review component certifications (RoHS)

Add uFL footprint

The main benefit is that we will not be limited to be a top shield. Right now the issue is the lack of (good) 90 degrees antenna.

It's OK if it's to factory-ready that would require a solder-jumper change.
Or even better, place the uFL footprint in the path, not mounted, and a resistor bridge that should be removed before placing the uFL, the same pad of the resistor would double and uFL live.

General labelling

Several changes:

Board must be named "Allwize K1"
Make the while label zone bigger
Increase font size, make it the same size as an Arduino
Add as much GND as possible on both sides
OSH logo (on top) (https://www.oshwa.org/open-source-hardware-logo/)
"Made in BCN"
Compliance logos (CE, ~~ROHS~~)

Through hole serial connectors

We should move back to using through-hole serial connectors for the RX/TX lines.

The idea is to use a 3x7 header array (3 lines of 7 pins, 2.54). The middle line will be connected to the pins in the header and the right and left ones to the RX and TX lines in the radio module. Using the same nomenclature we are using now.

The pins we must connect to the central line are: 0, 1, 2, 3, 4, 10 and 11.

Options: 0 (default for RX),1 (default for TX), 2, 3, 4, 8 and 9.