Temperatur Humidity Sensor SHT21

9 months ago

Open source license: Public Domain

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Description

General

Powered by 2 AA Batteries Size 20 x 45 (mm) Almost SMD 0805 Atmel328p TQFP32 NRF24I01 smd ATSHA204A chip FLASH for OTA FTDI, ISP SHT21 Sensor

Description

The Sensor works directly on two AA Batteries or Ni-MH.

Settings

Use Sensebender Micro bootloader Set Fuses before upload bootloader FUSES: L: 0XDE // H: 0XD2 // E: 0X07 (disabled BOD/8Mhz external clock) Set Fuses again, arduino IDE will override it with the default sensebender fuses or modify the board settings in Arduino IDE

Documents

Temperatur Humidity Sensor SHT21

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Temperatur Humidity Sensor SHT21

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BOM

ID Name Designator Quantity
1 470k R10 1
2 ATMEGA328P-AU U1 1
3 RST F,F1 2
4 100n C4,C5,C6,C7,C8,C2,C1 7
5 10k R3 1
6 DTR F2 1
7 IC_ATSHA204A_CRYPT U3 1
8 NRF24SMD U$2 1
9 56k R7,R4 2
10 NRF_CSN F4 1
11 SPST.B3U-1000P(M) RESET 1
12 1M R11 1
13 C0 F5 1
14 JST_VERTICAL AVR_ISP,FTDI 2
15 IC_EEPROM U2 1
16 4k7 R1,R2 2
17 100u C3 1
18 CONNECTOR_2DUPONT U$1 1
19 SHT21 SN1 1
20 CSTCE U$3 1

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