From ee9cc322d301631c9ff0751d9bed717c6492b6a5 Mon Sep 17 00:00:00 2001 From: joeycastillo Date: Thu, 26 Aug 2021 20:58:55 -0400 Subject: [PATCH] make chart not upside down --- README.md | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/README.md b/README.md index 2c9a6db..0e912a4 100644 --- a/README.md +++ b/README.md @@ -33,13 +33,13 @@ You may have noticed that there are no sensors on this board. That is by design: | **Pin** | **Digital** | **Interrupt** | **Analog** | **I2C** | **SPI** | **UART** | **PWM** | **Ext. Wake** | | :-----: | :---------: | :-------------: | :-----------: | :-----------------: | :------------------: | :----------------------: | :------: | :-----------: | -| **A4** | PB00 | EIC/EXTINT\[0\] | ADC/AIN\[8\] | — | MISO
SERCOM3\[2\] | TX or RX
SERCOM3\[2\] | TC3\[0\] | RTC/IN\[0\] | -| **A3** | PB03 | EIC/EXTINT\[3\] | ADC/AIN\[11\] | — | CS
SERCOM3\[1\] | RX
SERCOM3\[1\] | TC2\[1\] | — | -| **A2** | PB02 | EIC/EXTINT\[2\] | ADC/AIN\[10\] | — | MOSI
SERCOM3\[0\] | TX or RX
SERCOM3\[0\] | TC2\[0\] | RTC/IN\[1\] | -| **A1** | PB01 | EIC/EXTINT\[1\] | ADC/AIN\[9\] | — | SCK
SERCOM3\[3\] | RX
SERCOM3\[3\] | TC3\[1\] | — | -| **SDA** | — | — | — | SDA
SERCOM1\[0\] | — | — | — | — | -| **SCL** | — | — | — | SCL
SERCOM1\[1\] | — | — | — | — | | **A0** | PB04 | EIC/EXTINT\[4\] | ADC/AIN\[12\] | — | — | — | — | — | +| **SCL** | — | — | — | SCL
SERCOM1\[1\] | — | — | — | — | +| **SDA** | — | — | — | SDA
SERCOM1\[0\] | — | — | — | — | +| **A1** | PB01 | EIC/EXTINT\[1\] | ADC/AIN\[9\] | — | SCK
SERCOM3\[3\] | RX
SERCOM3\[3\] | TC3\[1\] | — | +| **A2** | PB02 | EIC/EXTINT\[2\] | ADC/AIN\[10\] | — | MOSI
SERCOM3\[0\] | TX or RX
SERCOM3\[0\] | TC2\[0\] | RTC/IN\[1\] | +| **A3** | PB03 | EIC/EXTINT\[3\] | ADC/AIN\[11\] | — | CS
SERCOM3\[1\] | RX
SERCOM3\[1\] | TC2\[1\] | — | +| **A4** | PB00 | EIC/EXTINT\[0\] | ADC/AIN\[8\] | — | MISO
SERCOM3\[2\] | TX or RX
SERCOM3\[2\] | TC3\[0\] | RTC/IN\[0\] | These tiny “sensor boards” have a set outline, and the available area for your electronics is quite small (5.7 × 5.7 × 1 mm). Still, this is plenty of room for an environmental sensor, MEMS accelerometer or magnetometer and a couple of decoupling capacitors. Note that you will likely be limited to QFN and LGA type parts; SOICs are too large, and even SSOP packages are generally too thick. You can find reference designs for several sensor boards in the `PCB/Sensor Boards` directory within this repository.