Difference between revisions of "High resolution barometric pressure sensor"
From ScienceZero
(New page: == Parts used == Suitable parts can be found at Futurlec === ET-BASE ARM2103 controller === * CPU NXP LPC2103 * RAM 8192 bytes * FLASH 32768 bytes * Clock rate 59 MHz === LCD display Opt...) |
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| + | == Controller connections == | ||
| + | LCD Direction LPC2103 Signal | ||
| + | EN <--- P0.17 Enable (10 kOhm pull-up to 5 V on controller) | ||
| + | RW <--- P0.18 Direction of data bus | ||
| + | RS <--- P0.19 Data/instruction select | ||
| + | D4 <--> P0.20 Data 0 | ||
| + | D5 <--> P0.21 Data 1 | ||
| + | D6 <--> P0.22 Data 2 | ||
| + | D7 <--> P0.23 Data 3 | ||
| + | |||
| + | HP03D Direction LPC2103 Signal | ||
| + | 1 - VSS - GND | ||
| + | 2 - VDD - +3.3 V | ||
| + | 3 - MCLK <--- P0.7 - MAT2.0 32768 Hz | ||
| + | 4 - XCLR <--- P0.4 - PIO Reset (Active low, high during A/D operation) | ||
| + | 5 - SDA <--> P0.3 - SDA0 I2C data (10 kOhm pull-up to 3.3 V) | ||
| + | 6 - SCLK <--- P0.2 - SCL0 I2C clock (10 kOhm pull-up to 3.3 V) | ||
| + | |||
| + | == LCD interface == | ||
| + | |||
| + | == I<sup>2</sup>C bus == | ||
| + | |||
== Parts used == | == Parts used == | ||
Suitable parts can be found at Futurlec | Suitable parts can be found at Futurlec | ||
| Line 7: | Line 29: | ||
* FLASH 32768 bytes | * FLASH 32768 bytes | ||
* Clock rate 59 MHz | * Clock rate 59 MHz | ||
| + | * Supply voltage 5 V | ||
=== LCD display Optrex 20434 === | === LCD display Optrex 20434 === | ||
| Line 19: | Line 42: | ||
* I<sup>2</sup>C Serial interface | * I<sup>2</sup>C Serial interface | ||
* Accurate to 0.5 hPa | * Accurate to 0.5 hPa | ||
| − | * Supply voltage: 2.2 - 3.6 V | + | * Supply voltage: 2.2 - 3.6 V (provided by controller) |
| − | * Supply current 500 uA | + | * Supply current 500 uA during A/D conversion |
[[Category:Electronics]] | [[Category:Electronics]] | ||
Revision as of 21:58, 30 March 2009
Contents
Controller connections
LCD Direction LPC2103 Signal EN <--- P0.17 Enable (10 kOhm pull-up to 5 V on controller) RW <--- P0.18 Direction of data bus RS <--- P0.19 Data/instruction select D4 <--> P0.20 Data 0 D5 <--> P0.21 Data 1 D6 <--> P0.22 Data 2 D7 <--> P0.23 Data 3
HP03D Direction LPC2103 Signal 1 - VSS - GND 2 - VDD - +3.3 V 3 - MCLK <--- P0.7 - MAT2.0 32768 Hz 4 - XCLR <--- P0.4 - PIO Reset (Active low, high during A/D operation) 5 - SDA <--> P0.3 - SDA0 I2C data (10 kOhm pull-up to 3.3 V) 6 - SCLK <--- P0.2 - SCL0 I2C clock (10 kOhm pull-up to 3.3 V)
LCD interface
I2C bus
Parts used
Suitable parts can be found at Futurlec
ET-BASE ARM2103 controller
- CPU NXP LPC2103
- RAM 8192 bytes
- FLASH 32768 bytes
- Clock rate 59 MHz
- Supply voltage 5 V
LCD display Optrex 20434
- 20 x 4 characters
- 4 bit bus
- Supply voltage 5 V
- Supply current 3 mA
Pressure sensor HP03D
- Pressure range 300-1100 hPa
- 16 bit A/D
- I2C Serial interface
- Accurate to 0.5 hPa
- Supply voltage: 2.2 - 3.6 V (provided by controller)
- Supply current 500 uA during A/D conversion
